From bowman@montana.com Wed Sep 1 04:22:30 1999 From: bowman@montana.com (bowman) Date: Tue, 31 Aug 1999 21:22:30 -0600 Subject: [Tutor] Simulating fileEvent Message-ID: <37CC9BF6.A480E971@montana.com> Evgeny Roubinchtein wrote: > > Well, I am sort of stumped on translating "fileevent": looking at its > man page, it behaves just like the TK/Tkinter's "bind" method, except > that "bind" calls a procedure when there's an X event, and "filevent" > calls procedure when some input is waiting to be read, so the read > won't 'block', so the application doesn't look "frozen" to the user. I've been playing with that example, and haven't gotten a good solution. popen() will work to capture the output (popen3() if you want the stderr too), and select() allows you to test the output so it won't block on a hung command, but it leaves a lot to be desired. Pssibly if the popen and select were off in a thread it would come close? -- Bear Technology Making Montana safe for Grizzlies http://people.montana.com/~bowman/ From Alexandre Passos" This is a multi-part message in MIME format. ------=_NextPart_000_0034_01BEF667.1C2E18C0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Has someone got a python tutorial to send me? atp@bahianet.com.br ------=_NextPart_000_0034_01BEF667.1C2E18C0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Has someone got a python tutorial to send = me?
atp@bahianet.com.br
 
------=_NextPart_000_0034_01BEF667.1C2E18C0-- From marquish@kos.net Sun Sep 5 17:22:20 1999 From: marquish@kos.net (Hugh Marquis) Date: Sun, 5 Sep 1999 12:22:20 -0400 Subject: [Tutor] python vs VB Message-ID: <002101bef7ba$d4fa3e20$e528bace@chuck> This is a multi-part message in MIME format. ------=_NextPart_000_001E_01BEF799.4CECD900 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable I want to begin programming and both Python and VB have been suggested = as good first languages. Although I realize you probably have some = biases could you comment on which might be better. Is Mark Lutz's book basic enough for a beginning programmer. Thanks Hugh Marquis=20 ------=_NextPart_000_001E_01BEF799.4CECD900 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
I want to begin programming and both = Python and=20 VB have been suggested as good first languages.  Although I realize = you=20 probably have some biases could you comment on which might be=20 better.
 
Is Mark Lutz's book basic enough for = a beginning=20 programmer.
 
Thanks
 
Hugh = Marquis 
------=_NextPart_000_001E_01BEF799.4CECD900-- From deirdre@deirdre.net Sun Sep 5 21:08:53 1999 From: deirdre@deirdre.net (Deirdre Saoirse) Date: Sun, 5 Sep 1999 13:08:53 -0700 (PDT) Subject: [Tutor] python vs VB In-Reply-To: <002101bef7ba$d4fa3e20$e528bace@chuck> Message-ID: On Sun, 5 Sep 1999, Hugh Marquis wrote: > I want to begin programming and both Python and VB have been suggested > as good first languages. Although I realize you probably have some > biases could you comment on which might be better. A good programming language is ALWAYS portable. VB isn't. > Is Mark Lutz's book basic enough for a beginning programmer. Perhaps not, though we're trying to get another book going. -- _Deirdre * http://www.linuxcabal.net * http://www.deirdre.net "I must say that I was really happy to see _Linux for Dummies_ -- that's when you know you've arrived." -- Linus Torvalds From alan.gauld@bt.com Mon Sep 6 10:51:23 1999 From: alan.gauld@bt.com (alan.gauld@bt.com) Date: Mon, 6 Sep 1999 10:51:23 +0100 Subject: [Tutor] Tutorial python Message-ID: <5104D4DBC598D211B5FE0000F8FE7EB202DF5DF4@mbtlipnt02.btlabs.bt.co.uk> > Has someone got a python tutorial to send me? > atp@bahianet.com.br There's one in the download which is very good. There are a couple of short beginners ones on the web site and I do a big beginners one at: http://members.xoom.com/alan_gauld/tutor/tutindex.htm There's a zip version to download too. Alan G. From jwiscav@hotmail.com Mon Sep 6 15:52:32 1999 From: jwiscav@hotmail.com (Joshua Wiscaver) Date: Mon, 06 Sep 1999 14:52:32 GMT Subject: [Tutor] Re: Tutor digest, Vol 1 #117 - 2 msgs Message-ID: <19990906145234.5822.qmail@hotmail.com> First of all, as was mentioned, VB is not very portable. Secondly, VB is not a real programming language, it's a platform. Thirdly, what "language" you choose to learn depends upon what you want to do. If you want to "program" in Windows, then VB is probably the way to go for a beginner. Finally, whatever you do, be diligent. ~PEACE~ ----Original Message Follows---- From: tutor-admin@python.org Reply-To: tutor@python.org To: tutor@python.org Subject: Tutor digest, Vol 1 #117 - 2 msgs Date: Mon, 6 Sep 1999 01:03:06 -0400 (EDT) MIME-Version: 1.0 From a.mueller@icrf.icnet.uk Mon Sep 6 16:03:53 1999 From: a.mueller@icrf.icnet.uk (Arne Mueller) Date: Mon, 06 Sep 1999 16:03:53 +0100 Subject: [Tutor] filling in web forms Message-ID: <37D3D7D9.8F515D97@icrf.icnet.uk> Hi All, is there a python module that helps automatically filling in web forms like the 'LWP' module in perl? People say that python is a good alternative to perl when programming is web related (cgi and stuff). Maybe the language itself is the right thing for the web but at the moment it seems to be a major lack of suitable modules for the web (yes, I know your answer will we: "write your own modules"). However if you know a module to fill out web forms I'd realy like to hear from you. thanks alot, Arne From m.faassen@vet.uu.nl Mon Sep 6 17:33:53 1999 From: m.faassen@vet.uu.nl (Martijn Faassen) Date: Mon, 06 Sep 1999 18:33:53 +0200 Subject: [Tutor] python vs VB References: Message-ID: <37D3ECF1.6D6EF784@vet.uu.nl> Deirdre Saoirse wrote: > > On Sun, 5 Sep 1999, Hugh Marquis wrote: > > > I want to begin programming and both Python and VB have been suggested > > as good first languages. Although I realize you probably have some > > biases could you comment on which might be better. > > A good programming language is ALWAYS portable. VB isn't. I haven't worked with VB a lot, but: With VB it's really easy to do what VB is designed for; primarily user interfaces and working with databases. However, it's not so good if you want to learn programming. VB doesn't separate the user interface from the things the program actually does, which isn't a good programming style. My impression is that you can whip up some program quite quickly, but then maintaining it later is not fun. Anyway, language-wise Python is a cleaner language than VB -- Python is one of the nicest and cleanest programming languages I know. As far as I know you can't program object orientedly with VB, either. So, Python will probably teach you better programming practices (which is very important later on). And, while you don't create a graphical user interface as easily in Python, Python does allow you to create *many* types of graphical user interfaces -- for windows, for unix, for whatever you can come up with. This is the same for everything you want to do with Python -- there's more do it yourself, but there's a sea of possibilities. It doesn't tie you down to only a single platform and a single set of solutions, like VB does. Python talks to just about anything you can think of, and people are constantly interfacing it with new systems. Another important point is that Python is free (as in no charge and as in open source). With VB, don't expect to get personal email from the main VB developers. With Python, I did get emails from Guido once in a while. :) In general, open source brings you a lot of freedom you won't have with VB. This is part of the reason why people are able to interface Python with so many things in the first place. And the Python community is also a lot of fun. > > Is Mark Lutz's book basic enough for a beginning programmer. > > Perhaps not, though we're trying to get another book going. 'Programming Python' isn't. 'Learning Python' (the new book by Mark Lutz and David Ascher) isn't for people completely new to programming either -- a friend of mine is trying to learn programming with it but she has some difficulties (lots of terminology she isn't aware of is used liberally in the book). So, if you want to get some cool looking windows app (that may not actually do much) going quickly, use VB. If you want to do anything else, including making cool looking windows apps later on, use Python. :) Regards, Martijn From eroubinc@u.washington.edu Mon Sep 6 18:07:22 1999 From: eroubinc@u.washington.edu (Evgeny Roubinchtein) Date: Mon, 6 Sep 1999 10:07:22 -0700 (PDT) Subject: [Tutor] filling in web forms In-Reply-To: <37D3D7D9.8F515D97@icrf.icnet.uk> Message-ID: On Mon, 6 Sep 1999, Arne Mueller wrote: >Hi All, > >is there a python module that helps automatically filling in web forms >like the 'LWP' module in perl? Have you had a chance to look at the HTMLGen module? http://starship.python.net/crew/friedrich/HTMLgen/html/main.html Have you checked out the Web Programming "Topic Guide"? http://www.python.org/topics/web/ www.python.org is always a good start when looking for a Python module :-). [...snip...] -- Evgeny Roubinchtein, eroubinc@u.washington.edu ................... The value of a program is proportional to the weight of its output. From denniston1@yahoo.com Mon Sep 6 18:23:47 1999 From: denniston1@yahoo.com (Jason Denniston) Date: Mon, 6 Sep 1999 10:23:47 -0700 (PDT) Subject: [Tutor] (no subject) Message-ID: <19990906172347.8279.rocketmail@web1105.mail.yahoo.com> okay i understand that i don't know very much about programming, but i do know a bit about basic programming and html'ing, what i'm looking for is some programming examples, and a list of reserved words and things of that nature. __________________________________________________ Do You Yahoo!? Bid and sell for free at http://auctions.yahoo.com From a.mueller@icrf.icnet.uk Mon Sep 6 19:16:30 1999 From: a.mueller@icrf.icnet.uk (Arne Mueller) Date: Mon, 06 Sep 1999 19:16:30 +0100 Subject: [Tutor] filling in web forms References: Message-ID: <37D404FE.39C1CFF1@icrf.icnet.uk> Evgeny Roubinchtein wrote: > > On Mon, 6 Sep 1999, Arne Mueller wrote: > > >Hi All, > > > >is there a python module that helps automatically filling in web forms > >like the 'LWP' module in perl? > > Have you had a chance to look at the HTMLGen module? > http://starship.python.net/crew/friedrich/HTMLgen/html/main.html > > Have you checked out the Web Programming "Topic Guide"? > > http://www.python.org/topics/web/ > > www.python.org is always a good start when looking for a Python module > :-). > > [...snip...] Yes, I checked the above sites, and it may be possible to use HTMLgen to fill out forms previously retrieved by urllib . However I havn't foud out how to do ... ;-( thanks alot, Arne From gerrit.holl@pobox.com Mon Sep 6 22:06:35 1999 From: gerrit.holl@pobox.com (Gerrit Holl) Date: Mon, 6 Sep 1999 23:06:35 +0200 Subject: [Tutor] python vs VB In-Reply-To: ; from Deirdre Saoirse on Sun, Sep 05, 1999 at 01:08:53PM -0700 References: <002101bef7ba$d4fa3e20$e528bace@chuck> Message-ID: <19990906230635.B25013@optiplex.palga.uucp> On Sun, Sep 05, 1999 at 01:08:53PM -0700, Deirdre Saoirse wrote: > On Sun, 5 Sep 1999, Hugh Marquis wrote: > > > I want to begin programming and both Python and VB have been suggested > > as good first languages. Although I realize you probably have some > > biases could you comment on which might be better. > > A good programming language is ALWAYS portable. VB isn't. > What I heard about VB is not good. Note: I only heard about VB from Linux users (often: micro$oft bashers). > > Is Mark Lutz's book basic enough for a beginning programmer. > > Perhaps not, though we're trying to get another book going. > Learning python sure is. Programming python sure isn't. regards, Gerrit. -- Unix is easy: type 'man man' and the rest comes of itself. From gerrit.holl@pobox.com Mon Sep 6 22:02:16 1999 From: gerrit.holl@pobox.com (Gerrit Holl) Date: Mon, 6 Sep 1999 23:02:16 +0200 Subject: [Tutor] (no subject) In-Reply-To: <19990906172347.8279.rocketmail@web1105.mail.yahoo.com>; from Jason Denniston on Mon, Sep 06, 1999 at 10:23:47AM -0700 References: <19990906172347.8279.rocketmail@web1105.mail.yahoo.com> Message-ID: <19990906230216.A25013@optiplex.palga.uucp> Hello, On Mon, Sep 06, 1999 at 10:23:47AM -0700, Jason Denniston wrote: > > okay i understand that i don't know very much about > programming, Neither I did, one year ago. > but i do know a bit about basic programming I didn't. > and html'ing, That won't really help you when you want to learn python. > what i'm looking for is some > programming examples, and a list of reserved words and > things of that nature. > I strongly recommend to buy the book "Learning python". It's written for people who haven't programmed before, and python is a very suitable language for people who haven't programmed before. Success, regards, Gerrit. -- Unix is easy: type 'man man' and the rest comes of itself. From deirdre@deirdre.net Mon Sep 6 23:56:53 1999 From: deirdre@deirdre.net (Deirdre Saoirse) Date: Mon, 6 Sep 1999 15:56:53 -0700 (PDT) Subject: [Tutor] python vs VB In-Reply-To: <19990906230635.B25013@optiplex.palga.uucp> Message-ID: On Mon, 6 Sep 1999, Gerrit Holl wrote: > What I heard about VB is not good. > Note: I only heard about VB from Linux users (often: micro$oft bashers). Well, I am a Linux user and a frequent M$ basher but I will say that I have recommended VB in situations where the alternative was more expensive and a worse choice. > > > Is Mark Lutz's book basic enough for a beginning programmer. > > Perhaps not, though we're trying to get another book going. > Learning python sure is. > Programming python sure isn't. Some people have said that Learning Python was too advanced for them which is why I said "Perhaps not." If it works for the person in question, by all means use it. It's the closest to a book for true beginners other than the Python tutorial. -- _Deirdre * http://www.linuxcabal.net * http://www.deirdre.net "I must say that I was really happy to see _Linux for Dummies_ -- that's when you know you've arrived." -- Linus Torvalds From Alexandre Passos" This is a multi-part message in MIME format. ------=_NextPart_000_0028_01BEF8AD.9C242E00 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable I've tried the working model of VB and noticed that Python is much = different. Python is text-oriented and VB is object/event oriented. I'm trying this = tutorial ,too: http://members.xoom.com/alan_gauld/tutor/tutindex.htm it's nice for beginners like me. ------=_NextPart_000_0028_01BEF8AD.9C242E00 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
I've tried the working model of VB = and noticed=20 that Python is much different.
Python is text-oriented and VB is = object/event=20 oriented. I'm trying this tutorial ,too:
http://mem= bers.xoom.com/alan_gauld/tutor/tutindex.htm
it's=20 nice for beginners like me.
------=_NextPart_000_0028_01BEF8AD.9C242E00-- From strat_addict@yahoo.com Tue Sep 7 07:08:49 1999 From: strat_addict@yahoo.com (G. Norton) Date: Mon, 6 Sep 1999 23:08:49 -0700 (PDT) Subject: [Tutor] (no subject) Message-ID: <19990907060849.21397.rocketmail@web1405.mail.yahoo.com> > I strongly recommend to buy the book "Learning > python". It's written for > people who haven't programmed before, and python is > a very suitable language > for people who haven't programmed before. As a newbie who has been studying Python for a month or so, I cannot recommend "Learning Python" from O'Reilly.If you have absolutely no programming experience, this book won't be much help in the beginning.It's too fast, too soon and at times the syntax can be quite overwhelming very early on.If your a Windows user(like myself)you are at times left to figure out which examples apply to you.Alan Gauld's tutorial is a good place to start.It's thorough, very easy to understand and Alan has been very kind to answer my questions. Perhaps an update to the O'Reilly book should be called "Learning "Learning Python"" gtnorton __________________________________________________ Do You Yahoo!? Bid and sell for free at http://auctions.yahoo.com From alan.gauld@bt.com Tue Sep 7 10:34:24 1999 From: alan.gauld@bt.com (alan.gauld@bt.com) Date: Tue, 7 Sep 1999 10:34:24 +0100 Subject: [Tutor] Python vs. VB Message-ID: <5104D4DBC598D211B5FE0000F8FE7EB202DF5E05@mbtlipnt02.btlabs.bt.co.uk> > Python is text-oriented and VB is object/event oriented. I'm > trying this tutorial ,too: > http://members.xoom.com/alan_gauld/tutor/tutindex.htm > it's nice for beginners like me. Thanks for the kind words. Any feedback/criticism is welcome too. VB is fine for small GUI projects on Windoze platforms. Its certainly easier that GUI programming in Python(which you can do using several approaches and there is even a GUI builder - SpecPython. But VB is easier if its windows. Personally I prefer Delphi since its more like Python in concept and easier to use for larger projects, but if you are working alone then VB is adequate. Alan g. From m.faassen@vet.uu.nl Tue Sep 7 17:51:58 1999 From: m.faassen@vet.uu.nl (Martijn Faassen) Date: Tue, 07 Sep 1999 18:51:58 +0200 Subject: [Tutor] Python vs. VB References: <002b01bef8c6$c23ad080$775bdfc8@the-user> Message-ID: <37D542AE.3AA4DAC4@vet.uu.nl> > Alexandre Passos wrote: > > I've tried the working model of VB and noticed that Python is much > different. > Python is text-oriented and VB is object/event oriented. Actually *Python* is the object oriented programming language and VB isn't. VB can have objects, but they can't inherit from each other as far as I know, which is part of the definition of 'object oriented'. That's why VB is sometimes called 'object based'. In VB you tend to deal a lot with user interface objects that can receive events, and you attach code to those events. I think it's possible to develop your own VB objects as well (within limitations), but in general that's obscured from view; the whole paradigm is that you build a user interface and do your stuff in the events. Your mind gets focused on GUI building, and distracted from actually programming. This paradigm is fine for short programs, but for larger projects it becomes very limiting; you aren't able to organize your code as easily, and good code organisation (and abstraction of things) is one of the most important things in programming. In Python, there's no default way to construct a GUI, no default GUI builder, no default object/event system. But, you can work with such systems in Python; although it is harder to get something going with Python than with VB, if it includes user interface things. Once you have it going in Python however, you can organize your code a lot better than in VB, as Python as a language is much nicer. VB is not just a programming language, but an environment to develop software in -- it includes an editor and GUI builder, among other things. Python is just the programming language itself -- you get external editors, and external GUI builders (though not many Python GUI builders exist yet). You can pick and choose your own things. This makes Python more flexible and open. That said, it would be nice to have a Python GUI development environment as well. It may make it more difficult to organize code, just like VB does now, but Python is a more open and flexible language, so I think we'll survive that :) It would be handy to quickly whip up a nice GUI app, and it would be easier on newbies as well (who tend to like to see quick results). There are various projects that can provide the parts for such an environment bandied around right now, so perhaps in a while we'll see a 'Visual Python'. Regards, Martijn From YankoC@gspinc.com Wed Sep 8 13:51:29 1999 From: YankoC@gspinc.com (Yanko, Curtis (GSP)) Date: Wed, 8 Sep 1999 08:51:29 -0400 Subject: [Tutor] PP and App framework Message-ID: <23EF0668B5D3D111A0CF00805F9FDC4401707E52@SRV_EXCH1> Hello everyone, I've been following the list for a bit now and am fairly new to Python but not programming in general. I've read both Learning Python and PP and decided to use the app framework in the back of PP. I'm having trouble understanding how to implement the framework as a part of my Python environment. I am trying to study the existing examples but am having a hard time getting them to run. I'm trying to run Myapp4.py and get the following: Traceback (innermost last): File "E:\PYTHON\FRAMEWRK\MYAPP4.PY", line 24, in ? class MyApp(MenuApp): NameError: MenuApp Ok, a simple namespace issue so I look at the source file: from app import * ... class MyApp(MenuApp): def start(self): ... Menuapp is a class in interact.py but we are only importing all of app. So is this meant to be a package? I had initially just added the folder with all of the framework stuff to the python path. Has anyone done any work with this framework? It seems like a great starting point for an aspiring Python programmer. What's the best way to integrate it into my environment? Thank -Curtis Yanko p.s. I'm going to try and just import interact.py for now to keep going but I intend to use this framework a lot until I get into GUI's so it's not just a get over the hurdle question. From eroubinc@u.washington.edu Thu Sep 9 20:09:19 1999 From: eroubinc@u.washington.edu (Evgeny Roubinchtein) Date: Thu, 9 Sep 1999 12:09:19 -0700 (PDT) Subject: [Tutor] Tkinter: Grid : weight option Message-ID: After my initial frustration with doing a "fileevent" in Python a'la TCL, I am translating some simpler scripts from TCL/Tk to Python, so I can be comfortable with widgets, geometry managers and such. I hit a snag on this script, in particular with the "weight" setting: #!/usr/local/bin/wish8.0 text .text -yscrollcommand ".yscroll set" \ -xscrollcommand ".xscroll set" \ -width 40 -height 10 scrollbar .yscroll -command ".text yview" -orient vertical scrollbar .xscroll -command ".text xview" -orient horizontal grid .text .yscroll -sticky news grid .xscroll -sticky ew grid rowconfigure . 0 -weight 1 grid columnconfigure . 0 -weight 1 I looked at Fredrik Lundh's Tkinter tutorial, where he talks about the Grid Geometry Manager "Manager Options", and decided that one way to translate the above into Python would be thusly: #! /usr/local/bin/python from Tkinter import * class App(Frame): def __init__(self, master = None): # as in Matt Conways examples Frame.__init__(self, master) Pack.configure(self) self.create_widgets() def create_widgets(self): self.text = Text(self, width = 40, height = 10) self.yscroll = Scrollbar(self, command = self.text.yview, orient = VERTICAL) self.xscroll = Scrollbar(self, command = self.text.xview, orient = HORIZONTAL) self.text.configure(yscrollcommand = self.yscroll.set, xscrollcommand = self.xscroll.set) self.text.grid(row = 0, column = 0, sticky = 'news') self.yscroll.grid(row = 0, column = 1, sticky = 'news') self.xscroll.grid(row = 1, column = 0, sticky = 'ew') # now set the weights self.rowconfigure(0, weight = 1) self.columnconfigure(0, weight = 1) def test(): app = App() app.mainloop() if __name__ == '__main__': test() Unfortunately, when I run it the text area and the scrollbars shrink when I make the window smaller, but they won't grow when I make the window larger (resizing the window in my window manager). I am a bit puzzled as to why this happens. I did a "grep -i -l weight *.py" in my the lib-tk directory of my Python installation, and the only mention of weight appears to be in the tkFont module, which puzzles me even more. This is Python 1.5.2 running under FreeBSD-3.2-STABLE, with XFree86 and AfterStep-1.6.10 as a WM, btw. -- Evgeny Roubinchtein, eroubinc@u.washington.edu ................... Performance proven: It works through beta test. From Aaron Marzec" This is a multi-part message in MIME format. ------=_NextPart_000_000F_01BEFAFD.CFE1BC60 Content-Type: multipart/alternative; boundary="----=_NextPart_001_0010_01BEFAFD.CFE1BC60" ------=_NextPart_001_0010_01BEFAFD.CFE1BC60 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable ------=_NextPart_001_0010_01BEFAFD.CFE1BC60 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
 
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I don't know of any python writing and i've never even seen it. i was wonder if you could PLEASE HELP ME , PLEASE. From deirdre@deirdre.net Fri Sep 10 21:43:03 1999 From: deirdre@deirdre.net (Deirdre Saoirse) Date: Fri, 10 Sep 1999 13:43:03 -0700 (PDT) Subject: [Tutor] Please help In-Reply-To: <000501befbc7$761f9ec0$e9b5153f@usi-computer> Message-ID: http://www.python.org/doc/ There's a lovely tutorial there. On Fri, 10 Sep 1999, usia wrote: > I am just starting out and i don't know the first thing about this language > and i was wonder where i should start, what is the first step to learning > this language. I don't know of any python writing and i've never even seen -- _Deirdre * http://www.linuxcabal.net * http://www.deirdre.net "I must say that I was really happy to see _Linux for Dummies_ -- that's when you know you've arrived." -- Linus Torvalds From dennis@operamail.com Sun Sep 12 02:49:55 1999 From: dennis@operamail.com (Dennis) Date: Sat, 11 Sep 1999 20:49:55 -0500 Subject: [Tutor] "Learning Python" Chapter Exercise Message-ID: <37DB06C3.6EEF47C4@operamail.com> I just started looking a python and picked up a copy of Learning Python. At the end of chapter one, I managed to get the first question, but can't work out the second, which is to create a one line module: print "hello module world', saved as module1.py The book uses Linux (or unix) examples and I am (for now) running windows. I assume my problem is windows specific. Following is the result of trying to run module1.py. If anyone is willing to point me in the right direction I would appreciate the help. Thanks >>>module1.py Traceback (innermost last): File "", line 1, in ? NameError: module1 From deirdre@deirdre.net Sun Sep 12 03:13:21 1999 From: deirdre@deirdre.net (Deirdre Saoirse) Date: Sat, 11 Sep 1999 19:13:21 -0700 (PDT) Subject: [Tutor] "Learning Python" Chapter Exercise In-Reply-To: <37DB06C3.6EEF47C4@operamail.com> Message-ID: On Sat, 11 Sep 1999, Dennis wrote: > The book uses Linux (or unix) examples and I am (for now) running > windows. I assume my problem is windows specific. Following is the > result of trying to run module1.py. If anyone is willing to point > me in the right direction I would appreciate the help. Thanks You should instead say: import module1 > >>>module1.py > Traceback (innermost last): > File "", line 1, in ? > NameError: module1 -- _Deirdre * http://www.linuxcabal.net * http://www.deirdre.net "I must say that I was really happy to see _Linux for Dummies_ -- that's when you know you've arrived." -- Linus Torvalds From fmurray@email.com Sun Sep 12 04:00:22 1999 From: fmurray@email.com (frank) Date: Sat, 11 Sep 1999 20:00:22 -0700 Subject: [Tutor] little pythons Message-ID: <99091120075500.02579@.c631759-a.tcma1.wa.home.com> my twelve year old grandson has decided to learn python...i've heard that guido has proposed a program for educating younger programmers, but have not located any instructional materials specifically designed for younger folk...if any here have info on any such materials, i'd send you a thanking in return for such info... in fact, i'l send it in advance... thanks, -- frank From wilson@chemsun.chem.umn.edu Sun Sep 12 04:51:22 1999 From: wilson@chemsun.chem.umn.edu (Tim Wilson) Date: Sat, 11 Sep 1999 22:51:22 -0500 (CDT) Subject: [Tutor] "Learning Python" Chapter Exercise In-Reply-To: <37DB06C3.6EEF47C4@operamail.com> Message-ID: On Sat, 11 Sep 1999, Dennis wrote: > The book uses Linux (or unix) examples and I am (for now) running > windows. I assume my problem is windows specific. Following is the > result of trying to run module1.py. If anyone is willing to point > me in the right direction I would appreciate the help. Thanks I don't have my copy in front of me, but did you check the answers to the problems that are provided in the back of the book? -Tim -- Timothy Wilson | "The faster you | Check out: Henry Sibley H.S. | go, the shorter | http://slashdot.org/ W. St. Paul, MN, USA | you are." | http://linux.com/ wilson@chem.umn.edu | -Einstein | http://www.mn-linux.org/ From eroubinc@u.washington.edu Sun Sep 12 06:42:57 1999 From: eroubinc@u.washington.edu (Evgeny Roubinchtein) Date: Sat, 11 Sep 1999 22:42:57 -0700 (PDT) Subject: [Tutor] little pythons In-Reply-To: <99091120075500.02579@.c631759-a.tcma1.wa.home.com> Message-ID: On Sat, 11 Sep 1999, frank wrote: >my twelve year old grandson has decided to learn python...i've heard that guido >has proposed a program for educating younger programmers, but have not located >any instructional materials specifically designed for younger folk...if any >here have info on any such materials, i'd send you a thanking in return for >such info... What you are probably thinking of is at: http://www.python.org/doc/essays/cp4e.html Unfortunately, this doesn't seem to give any instructions suitable for a 12-year old. I know that Seymor Papert of MIT was very enthusiastic about teaching LOGO to children. He desribes his experiences in a book called "Mindstorms", and also in an memo AIM-249 available from the MIT ftp server. There is an annotated bibliography of many of the memos at: http://www.neurop2.ruhr-uni-bochum.de/MIT_lit.html (and links to download them). Pyhon does have a turtle module, so dear to the hearts of LOGO-minded people, so it is certainly possible to start python, and then do something like >>> import turtle >>> joe = turtle.Pen() >>> lisa = turtle.Pen() >>> joe.down() >>> joe.forward(50) >>> lisa.right() # ... # then maybe >>> def square(turtle, side): ... turtle.forward(side) ... turtle.right(90) ... turtle.forward(side) ... turtle.right(90) ... turtle.forward(side) ... turtle.right(90) ... turtle.forward(side) >>> square(lisa, 30) >>> square(joe, 20) # etc... You may want to look at the LOGO books in your local library, and follow along in Python -- I can't think of it now, but I believe there was a LOGO book by a Brian Harvey, who later wrote "Simply Scheme"... That book was supposed to be good. There was another book that introduced "little people" as a way to think of procedures and recursion -- what was it? These are all the bright ideas I can come up with, I hope this helps. -- Evgeny Roubinchtein, eroubinc@u.washington.edu ................... BDC: Break Down and Cry From smb181@mciworld.com Wed Sep 15 01:22:50 1999 From: smb181@mciworld.com (smb181) Date: Tue, 14 Sep 1999 17:22:50 -0700 Subject: [Tutor] (no subject) Message-ID: <000801beff10$72d9f980$6cbc143f@k2d2d6> This is a multi-part message in MIME format. --Boundary_(ID_b1QszdhjvhglIlKmVAHKmw) Content-type: text/plain; charset="iso-8859-1" Content-transfer-encoding: quoted-printable >>>The following is part of the [4.4 section] in the Python Tutorial. = Please help me If you can. I am new to programming and computers;thanks = in advance. for n in range(2, 10): ... for x in range(2, n): ... if n % x =3D=3D 0:( I don't understand the n%x what does = it mean) ... print n, 'equals', x, '*', n/x ... break ... else: ... print n, 'is a prime number' ...=20 2 is a prime number 3 is a prime number 4 equals 2 * 2 5 is a prime number 6 equals 2 * 3 7 is a prime number 8 equals 2 * 4 9 equals 3 * 3 thanks SAMUEL L BESS --Boundary_(ID_b1QszdhjvhglIlKmVAHKmw) Content-type: text/html; charset="iso-8859-1" Content-transfer-encoding: quoted-printable
>>>The following is part of the [4.4 = section] in the=20 Python Tutorial. Please help me If you can. I am new to programming and=20 computers;thanks in advance.
for n in range(2, 10):
   =20 ...     for x in range(2, n):
    = ...         if n = % x =3D=3D=20 0:( I don't understand the n%x what does it = mean)
   =20 ...          &nb= sp;=20 print n, 'equals', x, '*', n/x
   =20 ...           =20 break
    ...    =20 else:
   =20 ...          print n, 'is a = prime=20 number'
    ...
    2 is a prime=20 number
    3 is a prime number
    4 = equals=20 2 * 2
    5 is a prime number
    6 = equals 2=20 * 3
    7 is a prime number
    8 = equals 2 *=20 4
    9 equals 3 * 3
thanks
SAMUEL L BESS
--Boundary_(ID_b1QszdhjvhglIlKmVAHKmw)-- From smb181@mciworld.com Wed Sep 15 01:25:22 1999 From: smb181@mciworld.com (smb181) Date: Tue, 14 Sep 1999 17:25:22 -0700 Subject: [Tutor] HELP Message-ID: <000a01beff10$cd6ec1a0$6cbc143f@k2d2d6> This is a multi-part message in MIME format. --Boundary_(ID_acL3Ecdpm8UB7UJugEW8AA) Content-type: text/plain; charset="iso-8859-1" Content-transfer-encoding: quoted-printable ----- Original Message -----=20 From: smb181=20 To: tutor@python.org=20 Sent: Tuesday, September 14, 1999 5:22 PM >>>The following is part of the [4.4 section] in the Python Tutorial. = Please help me If you can. I am new to programming and computers;thanks = in advance. for n in range(2, 10): ... for x in range(2, n): ... if n % x =3D=3D 0:( I don't understand the n%x what does = it mean) ... print n, 'equals', x, '*', n/x ... break ... else: ... print n, 'is a prime number' ...=20 2 is a prime number 3 is a prime number 4 equals 2 * 2 5 is a prime number 6 equals 2 * 3 7 is a prime number 8 equals 2 * 4 9 equals 3 * 3 thanks SAMUEL L BESS --Boundary_(ID_acL3Ecdpm8UB7UJugEW8AA) Content-type: text/html; charset="iso-8859-1" Content-transfer-encoding: quoted-printable
 
----- Original Message -----=20
From: smb181
Sent: Tuesday, September 14, 1999 5:22 PM

>>>The following is part of the [4.4 = section] in the=20 Python Tutorial. Please help me If you can. I am new to programming and=20 computers;thanks in advance.
for n in range(2, 10):
   =20 ...     for x in range(2, n):
    = ...         if n = % x =3D=3D=20 0:( I don't understand the n%x what does it = mean)
   =20 ...          &nb= sp;=20 print n, 'equals', x, '*', n/x
   =20 ...           =20 break
    ...    =20 else:
   =20 ...          print n, 'is a = prime=20 number'
    ...
    2 is a prime=20 number
    3 is a prime number
    4 = equals=20 2 * 2
    5 is a prime number
    6 = equals 2=20 * 3
    7 is a prime number
    8 = equals 2 *=20 4
    9 equals 3 * 3
thanks
SAMUEL L BESS
--Boundary_(ID_acL3Ecdpm8UB7UJugEW8AA)-- From ed_tsang@yahoo.com Wed Sep 15 00:05:27 1999 From: ed_tsang@yahoo.com (edward) Date: Tue, 14 Sep 1999 16:05:27 -0700 Subject: [Tutor] embedding python in C --- big porblem Message-ID: <37DED4B7.A8375337@yahoo.com> Hi to all knowlegable python user out there: I'm am very new to python and have been having huge trouble in embdding python with c and extending python with c. here is what I am trying to do: 1) extending python in c A) * create a function mymath(int a, int b) in a file called mymath.c; * try to call mymath function to add 1 & 2 from a pythohn script, * without recompling try to call mymath to add 3 and 4 from the python script * without recompliing try to redefine mymath, so that I am subtracting this time * try to call mymath function to subtract 1 from 2 * without recompliing try to call mymath to subtract 3 from 4 B) * create a structure which has two elements a and b, a function initStruct(x,y) to in a file called intiStruct.c. initStruct(x,y) will initlize a to x, b to y value. * try from a pythohn script, try to call the initStruct to intialise the stucture to 2 and 3 * without recompling try to call initStruct to intialise structure to 3 and 4 from the python script 2) embedding python to c A) * create a function mymath(int a, int b) in a file called mymath.py ; * try to call mymath function to add 1 & 2 from a C program, * without recompling try to call mymath to add 3 and 4 from the C program * without recompliing try to redefine mymath, so that I am subtracting this time. * try to call mymath function to subtract 1 from 2, from the C program * without recompliing try to call mymath to subtract 3 from 4, from the C program Can any one help me on this please. Can you give me the complete working code on this matter. I really need all you expert help on this thing. thanks. From ed_tsang@yahoo.com Wed Sep 15 00:08:43 1999 From: ed_tsang@yahoo.com (edward) Date: Tue, 14 Sep 1999 16:08:43 -0700 Subject: [Tutor] Re: embedding python in C --- big porblem References: <37DED4B7.A8375337@yahoo.com> Message-ID: <37DED57B.FB1395F9@yahoo.com> Please mail me your response to ed_tsang@yahoo.com thanks edward wrote: > Hi to all knowlegable python user out there: > I'm am very new to python and have been having huge trouble in embdding > python with c and extending python with c. > here is what I am trying to do: > 1) extending python in c > A) > * create a function mymath(int a, int b) in a file called mymath.c; > > * try to call mymath function to add 1 & 2 from a pythohn script, > * without recompling try to call mymath to add 3 and 4 from the > python script > * without recompliing try to redefine mymath, so that I am > subtracting this time > * try to call mymath function to subtract 1 from 2 > * without recompliing try to call mymath to subtract 3 from 4 > B) > * create a structure which has two elements a and b, > a function initStruct(x,y) to in a file called intiStruct.c. > initStruct(x,y) will initlize a to x, b to y value. > * try from a pythohn script, try to call the initStruct to > intialise the stucture to 2 and 3 > * without recompling try to call initStruct to intialise structure > to 3 and 4 from the python script > > 2) embedding python to c > A) > * create a function mymath(int a, int b) in a file called mymath.py > ; > * try to call mymath function to add 1 & 2 from a C program, > * without recompling try to call mymath to add 3 and 4 from the C > program > * without recompliing try to redefine mymath, so that I am > subtracting this time. > * try to call mymath function to subtract 1 from 2, from the C > program > * without recompliing try to call mymath to subtract 3 from 4, from > the C program > > Can any one help me on this please. Can you give me the complete working > code on this matter. I really need all you expert help on this thing. > thanks. From ed_tsang@yahoo.com Wed Sep 15 00:15:08 1999 From: ed_tsang@yahoo.com (edward) Date: Tue, 14 Sep 1999 16:15:08 -0700 Subject: [Tutor] Re: embedding python in C --- big porblem References: <37DED4B7.A8375337@yahoo.com> <37DED57B.FB1395F9@yahoo.com> Message-ID: <37DED6FC.E0AF92B2@yahoo.com> I have forgotten to ask one more question on this: Is it possible to compile the code such that the resultant will be just one excutable? (ie. python executable and the c exxcutable are residing in the same process)? If that is the case, I suspect I cannot change the input parameters on the fly (ie: I cannot do something like having mymath doing addin and then redefining the do substraction. without recmpling as in my questions below) Am I right on that? Thanks a gain edward wrote: > Please mail me your response to ed_tsang@yahoo.com > thanks > > edward wrote: > > > Hi to all knowlegable python user out there: > > I'm am very new to python and have been having huge trouble in embdding > > python with c and extending python with c. > > here is what I am trying to do: > > 1) extending python in c > > A) > > * create a function mymath(int a, int b) in a file called mymath.c; > > > > * try to call mymath function to add 1 & 2 from a pythohn script, > > * without recompling try to call mymath to add 3 and 4 from the > > python script > > * without recompliing try to redefine mymath, so that I am > > subtracting this time > > * try to call mymath function to subtract 1 from 2 > > * without recompliing try to call mymath to subtract 3 from 4 > > B) > > * create a structure which has two elements a and b, > > a function initStruct(x,y) to in a file called intiStruct.c. > > initStruct(x,y) will initlize a to x, b to y value. > > * try from a pythohn script, try to call the initStruct to > > intialise the stucture to 2 and 3 > > * without recompling try to call initStruct to intialise structure > > to 3 and 4 from the python script > > > > 2) embedding python to c > > A) > > * create a function mymath(int a, int b) in a file called mymath.py > > ; > > * try to call mymath function to add 1 & 2 from a C program, > > * without recompling try to call mymath to add 3 and 4 from the C > > program > > * without recompliing try to redefine mymath, so that I am > > subtracting this time. > > * try to call mymath function to subtract 1 from 2, from the C > > program > > * without recompliing try to call mymath to subtract 3 from 4, from > > the C program > > > > Can any one help me on this please. Can you give me the complete working > > code on this matter. I really need all you expert help on this thing. > > thanks. From piercew@netscape.net Wed Sep 15 02:51:59 1999 From: piercew@netscape.net (Wayne) Date: 14 Sep 99 18:51:59 PDT Subject: [Tutor] Help needed? Message-ID: <19990915015159.3309.qmail@ww184.netaddress.usa.net> ...I know I'm going to regret this, but I've recently started learning Python {I know a little [Perl, Java, C, C++, Scheme, Clips], enough to cause problems on the system without understanding what went wrong}. However, I don't have any ideas on good projects to start working on to help solidify the learning. My question....does anyone need help with a project they are working on? Most of the time I have will be on the weekends. I was thinking about starting to port various Perl modules to Python as a way to get more familiar with things. Wayne ____________________________________________________________________ Get your own FREE, personal Netscape WebMail account today at http://webmail.netscape.com. From skip@mojam.com (Skip Montanaro) Wed Sep 15 06:00:43 1999 From: skip@mojam.com (Skip Montanaro) (Skip Montanaro) Date: Wed, 15 Sep 1999 00:00:43 -0500 (CDT) Subject: [Tutor] Re: [Python-Help] embedding python in C --- big porblem In-Reply-To: <37DED4B7.A8375337@yahoo.com> References: <37DED4B7.A8375337@yahoo.com> Message-ID: <14303.10235.382144.699775@dolphin.mojam.com> Edward, I seriously doubt you are going to find anyone willing to solve our complete examples, but I will give you a few pointers. To extend Python with a module written in C, first you start by reading the extending and embedding manual at http://www.python.org/doc/current/ext/ext.html and familiarize yourself with the stub module that is delivered as xxmodule.c in the Modules directory of the source distribution. In your example of a module named mymath that defines a single function called mymath that takes two integers and adds them, you can ignore all but the Xxo_demo function, the PyMethodDef array and the initxx function. You will need to flesh out the Xxo_demo function to perform the required task (convert the Python args into C variables, add the two numbers, then convert the C variable back into a Python object that is returned). Modify the Xxo_method array to point to your mymath_mymath routine and suitably initialize the initxx routine. You might also look at the soundex module in the Modules directory as an example of a very simple module that only exposes a couple functions and doesn't define any new objects. As for embedding Python into C, again, read the extending and embedding manual. In the simplest case, you may have little to do but insert a few Python calls in your application and give your users some way to enter Python code that is then interpreted. Embedding Python into a C app can get very hairy as well, and for most useful tasks probably overlaps heavily with extending examples. Skip Montanaro | http://www.mojam.com/ skip@mojam.com | http://www.musi-cal.com/~skip/ 847-971-7098 | Python: Programming the way Guido indented... From arcege@shore.net Wed Sep 15 16:19:19 1999 From: arcege@shore.net (Michael P. Reilly) Date: Wed, 15 Sep 1999 11:19:19 -0400 (EDT) Subject: [Tutor] Re: embedding python in C --- big porblem In-Reply-To: <37DED6FC.E0AF92B2@yahoo.com> from edward at "Sep 14, 99 04:15:08 pm" Message-ID: <199909151519.LAA23988@northshore.shore.net> > edward wrote: > > > Please mail me your response to ed_tsang@yahoo.com > > thanks > > > > edward wrote: > > > > > Hi to all knowlegable python user out there: > > > I'm am very new to python and have been having huge trouble in embdding > > > python with c and extending python with c. > > > here is what I am trying to do: > > > 1) extending python in c > > > A) > > > * create a function mymath(int a, int b) in a file called mymath.c; If you have a specific C function, then you can easily create a C wrapper function for it. You can do this with sig, or write the C wrapper yourself. In fact many of the standard C extension modules are such wrappers. The function would look like: PyObject * /* return a Python object */ pyfunc_mymath(self, args) PyObject *self, *args; { PyObject *result; int rc, a, b; if (!PyArg_ParseTuple(args, "ii:mymath", &a, &b)) /* PyArg_ParseTuple sets the exception for you */ return NULL; /* call your function */ rc = mymath(a, b); /* construct a Python object from it */ result = Py_BuildValue("i", rc); /* return the resulting Python object */ return result; } Now you just need to add the new wrapper function to the module listing as described in the manuals: http://www.python.org/doc/current/ext/ext.html You will need to create a new module to hold this new function (and possibly others). > > > * try to call mymath function to add 1 & 2 from a pythohn script, Import the module created above and call the function: >>> import mymod >>> print mymod.mymath(1, 2) 3 > > > * without recompling try to call mymath to add 3 and 4 from the > > > python script Call the function with other arguments within Python. >>> import mymod >>> mymod.mymath(1, 2) 3 >>> mymod.mymath(3, 4) 7 > > > * without recompliing try to redefine mymath, so that I am > > > subtracting this time Well, you can not redefine the internal function of mymath - that is a C function compiled into the module. But the module IS a normal Python namespace and namespaces can be changed: >>> import mymod >>> mymod.mymath(1, 2) 3 >>> mymod.mymath = lambda a, b: a - b >>> mymod.mymath(3, 4) -1 The name is redefined to be a Python lambda function instead of a builtin C function. > > > * try to call mymath function to subtract 1 from 2 > > > * without recompliing try to call mymath to subtract 3 from 4 > > > B) > > > * create a structure which has two elements a and b, > > > a function initStruct(x,y) to in a file called intiStruct.c. > > > initStruct(x,y) will initlize a to x, b to y value. > > > * try from a pythohn script, try to call the initStruct to > > > intialise the stucture to 2 and 3 This is the same as above. > > > * without recompling try to call initStruct to intialise structure > > > to 3 and 4 from the python script > > > 2) embedding python to c > > > A) > > > * create a function mymath(int a, int b) in a file called mymath.py > > > ; Creating a C function inside a Python module file? Assuming you mean to create a Python function, then you can use: fp = fopen("commands.py", "r"); PyRun_SimpleFile(fp, "commands.py"); This is about the same as `exec("commands.py")'. Assuming that you mean to call a C function, you would need to code this into the C program. This is the same as above, except through the C API instead of through a Python script: /* import the module */ mymod = PyImport_ImportModule("mymod"); /* get the mymod.initStruct */ myfunc = PyObject_GetAttrString(mymod, "initStruct"); /* call it */ x = 2; result = PyObject_CallFunction(myfunc, "ii", x, 3); > > > * try to call mymath function to add 1 & 2 from a C program, > > > * without recompling try to call mymath to add 3 and 4 from the C > > > program That would need to be a C solution and not something for Python to handle. E.g. reading from stdin, reading from file, reading from UI form. > > > * without recompliing try to redefine mymath, so that I am > > > subtracting this time. See the first section; again, we're talking about namespaces. But you have to write code to tell the program to redefine the name "mymath". > > > * try to call mymath function to subtract 1 from 2, from the C > > > program > > > * without recompliing try to call mymath to subtract 3 from 4, from > > > the C program Most everything in this section means changing the C program, which means recompiling, or changing the Python script file. > > > Can any one help me on this please. Can you give me the complete working > > > code on this matter. I really need all you expert help on this thing. > > > thanks. Considering there is little to go on, it's unlikely that you will get "complete working code" from anyone. Maybe you could repost what you are looking to do in a more clearly defined manner. > I have forgotten to ask one more question on this: > Is it possible to compile the code such that the resultant will be just one > excutable? (ie. python executable and the c exxcutable are residing in the > same process)? When you extend or embed Python with C (or another language), then you get one executable (and possibly some dynamic loadables (.so, .dll, etc. depending on how you build it) > If that is the case, I suspect I cannot change the input parameters on the fly > (ie: I cannot do something like having mymath doing addin and then redefining > the do substraction. without recmpling as in my questions below) Am I right on > that? > Thanks a gain This would depend on what you have the program do. You could have the program define all of Python if you realllllly wanted (not that I would suggest it). The python interpreter, like just about any interpreter, is just read-eval-print loop. Your program could read input parameters from any medium and use them within the program without recompiling (if you designed the program to do that.) I suggest you read the Python documentation thoroughly; specifically: http://www.python.org/doc/current/ext/ext.html, and http://www.python.org/doc/current/api/api.html, and possibly even http://starship.python.net/crew/arcege/extwriting/pyext.html. -Arcege -- ------------------------------------------------------------------------ | Michael P. Reilly, Release Engineer | Email: arcege@shore.net | | Salem, Mass. USA 01970 | | ------------------------------------------------------------------------ From ed_tsang@yahoo.com Wed Sep 15 23:21:03 1999 From: ed_tsang@yahoo.com (Edward Tsang) Date: Wed, 15 Sep 1999 15:21:03 -0700 (PDT) Subject: [Tutor] compliing error and linkage error Message-ID: <19990915222103.18973.rocketmail@web219.mail.yahoo.com> > > here is the error message I have got when I try to > link modules together. > For some reason, python does seem to know where > mymath/mymath_wrapper is? > Can anyone give me a hand on that? (see Below for > more detailed dscription) > > Python 1.5 (#1, Jan 23 1998, 15:03:33) [GCC > 2.7.2.2] on sunos5 > Copyright 1991-1995 Stichting Mathematisch Centrum, > Amsterdam > >>> import mymath > Traceback (innermost last): > File "", line 1, in ? > ImportError: No module named mymath > >>> import mymath_wrapper > Traceback (innermost last): > File "", line 1, in ? > ImportError: ld.so.1: python: fatal: relocation > error: file ./mymath_wrapper.so: symbol mymath: > referenced symbol not found > > > Description: > AIM 1) try to call mymath from Python > 2) mymath function is defined and declared in > mymath.h, all written in c > 3) a wrapper module mymath_wrapper.c is done for > mymath function also in c > 4) attached are the make files I used, have done the > following: > *) Makefile.pre.in ---> no ediiting done > *)Setup ----> editted to include mymath_wrapper > and mymathwrapper.c > Setup.in (same as Setup and not included in > here) > *) make_shared ---> edited to include > mymath_wrapper and mymath_wrapper.c > 5) using Python1.5.2 and cc. on Solris CDE 1.3 > Thanks > > > ATTACHMENT part 2 application/x-sun-shell-script name=make_shared; x-unix-mode=0755 > # Universal Unix Makefile for Python extensions > # ============================================= > > # Short Instructions > # ------------------ > > # 1. Build and install Python (1.5 or newer). > # 2. "make -f Makefile.pre.in boot" > # 3. "make" > # You should now have a shared library. > > # Long Instructions > # ----------------- > > # Build *and install* the basic Python 1.5 > distribution. See the > # Python README for instructions. (This version of > Makefile.pre.in > # only withs with Python 1.5, alpha 3 or newer.) > > # Create a file Setup.in for your extension. This > file follows the > # format of the Modules/Setup.in file; see the > instructions there. > # For a simple module called "spam" on file > "spammodule.c", it can > # contain a single line: > # spam spammodule.c > # You can build as many modules as you want in the > same directory -- > # just have a separate line for each of them in the > Setup.in file. > > # If you want to build your extension as a shared > library, insert a > # line containing just the string > # *shared* > # at the top of your Setup.in file. > > # Note that the build process copies Setup.in to > Setup, and then works > # with Setup. It doesn't overwrite Setup when > Setup.in is changed, so > # while you're in the process of debugging your > Setup.in file, you may > # want to edit Setup instead, and copy it back to > Setup.in later. > # (All this is done so you can distribute your > extension easily and > # someone else can select the modules they actually > want to build by > # commenting out lines in the Setup file, without > editing the > # original. Editing Setup is also used to specify > nonstandard > # locations for include or library files.) > > # Copy this file (Misc/Makefile.pre.in) to the > directory containing > # your extension. > > # Run "make -f Makefile.pre.in boot". This creates > Makefile > # (producing Makefile.pre and sedscript as > intermediate files) and > # config.c, incorporating the values for sys.prefix, > sys.exec_prefix > # and sys.version from the installed Python binary. > For this to work, > # the python binary must be on your path. If this > fails, try > # make -f Makefile.pre.in Makefile VERSION=1.5 > installdir= > # where is the prefix used to install > Python for installdir > # (and possibly similar for > exec_installdir=). > > # Note: "make boot" implies "make clobber" -- it > assumes that when you > # bootstrap you may have changed platforms so it > removes all previous > # output files. > > # If you are building your extension as a shared > library (your > # Setup.in file starts with *shared*), run "make" or > "make sharedmods" > # to build the shared library files. If you are > building a statically > # linked Python binary (the only solution of your > platform doesn't > # support shared libraries, and sometimes handy if > you want to > # distribute or install the resulting Python > binary), run "make > # python". > > # Note: Each time you edit Makefile.pre.in or Setup, > you must run > # "make Makefile" before running "make". > > # Hint: if you want to use VPATH, you can start in > an empty > # subdirectory and say (e.g.): > # make -f ../Makefile.pre.in boot srcdir=.. > VPATH=.. > > > # === Bootstrap variables (edited through "make > boot") === > > # The prefix used by "make inclinstall libainstall" > of core python > installdir= /usr/local > > # The exec_prefix used by the same > exec_installdir=$(installdir) > > # Source directory and VPATH in case you want to use > VPATH. > # (You will have to edit these two lines yourself -- > there is no > # automatic support as the Makefile is not generated > by > # config.status.) > srcdir= . > VPATH= . > > # === Variables that you may want to customize > (rarely) === > > # (Static) build target > TARGET= python > > # Installed python binary (used only by boot target) > PYTHON= python > > # Add more -I and -D options here > CFLAGS= $(OPT) -I$(INCLUDEPY) -I$(EXECINCLUDEPY) > $(DEFS) > > # These two variables can be set in Setup to merge > extensions. > # See example[23]. > BASELIB= > BASESETUP= > > # === Variables set by makesetup === > > MODOBJS= _MODOBJS_ > MODLIBS= _MODLIBS_ > > # === Definitions added by makesetup === > > # === Variables from configure (through sedscript) > === > > VERSION= @VERSION@ > CC= @CC@ > LINKCC= @LINKCC@ > SGI_ABI= @SGI_ABI@ > OPT= @OPT@ > LDFLAGS= @LDFLAGS@ > LDLAST= @LDLAST@ > DEFS= @DEFS@ > LIBS= @LIBS@ > LIBM= @LIBM@ > LIBC= @LIBC@ > RANLIB= @RANLIB@ > MACHDEP= @MACHDEP@ > SO= @SO@ > LDSHARED= @LDSHARED@ > CCSHARED= @CCSHARED@ > LINKFORSHARED= @LINKFORSHARED@ > #@SET_CCC@ > > # Install prefix for architecture-independent files > prefix= /usr/local > > # Install prefix for architecture-dependent files > exec_prefix= $(prefix) > > # Uncomment the following two lines for AIX > #LINKCC= $(LIBPL)/makexp_aix $(LIBPL)/python.exp "" > $(LIBRARY); $(PURIFY) $(CC) > #LDSHARED= $(LIBPL)/ld_so_aix $(CC) > -bI:$(LIBPL)/python.exp > > # === Fixed definitions === > > # Shell used by make (some versions default to the > login shell, which is bad) > SHELL= /bin/sh > > # Expanded directories > BINDIR= $(exec_installdir)/bin > LIBDIR= $(exec_prefix)/lib > MANDIR= $(installdir)/man > INCLUDEDIR= $(installdir)/include > SCRIPTDIR= $(prefix)/lib > > # Detailed destination directories > BINLIBDEST= $(LIBDIR)/python$(VERSION) > LIBDEST= $(SCRIPTDIR)/python$(VERSION) > INCLUDEPY= $(INCLUDEDIR)/python$(VERSION) > EXECINCLUDEPY= > $(exec_installdir)/include/python$(VERSION) > LIBP= $(exec_installdir)/lib/python$(VERSION) > DESTSHARED= $(BINLIBDEST)/site-packages > > LIBPL= $(LIBP)/config > > PYTHONLIBS= $(LIBPL)/libpython$(VERSION).a > > MAKESETUP= $(LIBPL)/makesetup > MAKEFILE= $(LIBPL)/Makefile > CONFIGC= $(LIBPL)/config.c > CONFIGCIN= $(LIBPL)/config.c.in > SETUP= $(LIBPL)/Setup.thread $(LIBPL)/Setup.local > $(LIBPL)/Setup > > SYSLIBS= $(LIBM) $(LIBC) > > ADDOBJS= $(LIBPL)/python.o config.o > > # Portable install script (configure doesn't always > guess right) > INSTALL= $(LIBPL)/install-sh -c > # Shared libraries must be installed with executable > mode on some systems; > # rather than figuring out exactly which, we always > give them executable mode. > # Also, making them read-only seems to be a good > idea... > INSTALL_SHARED= ${INSTALL} -m 555 > > # === Fixed rules === > > # Default target. This builds shared libraries only > default: sharedmods > > # Build everything > all: static sharedmods > > # Build shared libraries from our extension modules > sharedmods: $(SHAREDMODS) > > # Build a static Python binary containing our > extension modules > static: $(TARGET) > $(TARGET): $(ADDOBJS) lib.a $(PYTHONLIBS) Makefile > $(BASELIB) > $(LINKCC) $(LDFLAGS) $(LINKFORSHARED) \ > $(ADDOBJS) lib.a $(PYTHONLIBS) \ > $(LINKPATH) $(BASELIB) $(MODLIBS) $(LIBS) > $(SYSLIBS) \ > -o $(TARGET) $(LDLAST) > > install: sharedmods > if test ! -d $(DESTSHARED) ; then \ > mkdir $(DESTSHARED) ; else true ; fi > -for i in X $(SHAREDMODS); do \ > if test $$i != X; \ > then $(INSTALL_SHARED) $$i $(DESTSHARED)/$$i; \ > fi; \ > done > > # Build the library containing our extension modules > lib.a: $(MODOBJS) > -rm -f lib.a > ar cr lib.a $(MODOBJS) > -$(RANLIB) lib.a > > # This runs makesetup *twice* to use the BASESETUP > definition from Setup > config.c Makefile: Makefile.pre Setup $(BASESETUP) > $(MAKESETUP) > $(MAKESETUP) \ > -m Makefile.pre -c $(CONFIGCIN) Setup -n > $(BASESETUP) $(SETUP) > $(MAKE) -f Makefile do-it-again > > # Internal target to run makesetup for the second > time > do-it-again: > $(MAKESETUP) \ > -m Makefile.pre -c $(CONFIGCIN) Setup -n > $(BASESETUP) $(SETUP) > > # Make config.o from the config.c created by > makesetup > config.o: config.c > $(CC) $(CFLAGS) -c config.c > > # Setup is copied from Setup.in *only* if it doesn't > yet exist > Setup: > cp $(srcdir)/Setup.in Setup > > # Make the intermediate Makefile.pre from > Makefile.pre.in > Makefile.pre: Makefile.pre.in sedscript > sed -f sedscript $(srcdir)/Makefile.pre.in > >Makefile.pre > > # Shortcuts to make the sed arguments on one line > P=prefix > E=exec_prefix > H=Generated automatically from Makefile.pre.in by > sedscript. > L=LINKFORSHARED > > # Make the sed script used to create Makefile.pre > from Makefile.pre.in > sedscript: $(MAKEFILE) > sed -n \ > -e '1s/.*/1i\\/p' \ > -e '2s%.*%# $H%p' \ > -e '/^VERSION=/s/^VERSION=[ > ]*\(.*\)/s%@VERSION[@]%\1%/p' \ > -e '/^CC=/s/^CC=[ ]*\(.*\)/s%@CC[@]%\1%/p' \ > -e '/^CCC=/s/^CCC=[ > ]*\(.*\)/s%#@SET_CCC[@]%CCC=\1%/p' \ > -e '/^LINKCC=/s/^LINKCC=[ > ]*\(.*\)/s%@LINKCC[@]%\1%/p' \ > -e '/^OPT=/s/^OPT=[ ]*\(.*\)/s%@OPT[@]%\1%/p' \ > -e '/^LDFLAGS=/s/^LDFLAGS=[ > ]*\(.*\)/s%@LDFLAGS[@]%\1%/p' \ > -e '/^LDLAST=/s/^LDLAST=[ > ]*\(.*\)/s%@LDLAST[@]%\1%/p' \ > -e '/^DEFS=/s/^DEFS=[ ]*\(.*\)/s%@DEFS[@]%\1%/p' > \ > -e '/^LIBS=/s/^LIBS=[ ]*\(.*\)/s%@LIBS[@]%\1%/p' > \ > -e '/^LIBM=/s/^LIBM=[ ]*\(.*\)/s%@LIBM[@]%\1%/p' > \ > -e '/^LIBC=/s/^LIBC=[ ]*\(.*\)/s%@LIBC[@]%\1%/p' > \ > -e '/^RANLIB=/s/^RANLIB=[ > ]*\(.*\)/s%@RANLIB[@]%\1%/p' \ > -e '/^MACHDEP=/s/^MACHDEP=[ > ]*\(.*\)/s%@MACHDEP[@]%\1%/p' \ > -e '/^SO=/s/^SO=[ ]*\(.*\)/s%@SO[@]%\1%/p' \ > -e '/^LDSHARED=/s/^LDSHARED=[ > ]*\(.*\)/s%@LDSHARED[@]%\1%/p' \ > -e '/^CCSHARED=/s/^CCSHARED=[ > ]*\(.*\)/s%@CCSHARED[@]%\1%/p' \ > -e '/^SGI_ABI=/s/^SGI_ABI=[ > ]*\(.*\)/s%@SGI_ABI[@]%\1%/p' \ > -e '/^$L=/s/^$L=[ ]*\(.*\)/s%@$L[@]%\1%/p' \ > -e '/^$P=/s/^$P=\(.*\)/s%^$P=.*%$P=\1%/p' \ > -e '/^$E=/s/^$E=\(.*\)/s%^$E=.*%$E=\1%/p' \ > $(MAKEFILE) >sedscript > echo "/^#@SET_CCC@/d" >>sedscript > echo "/^installdir=/s%=.*%= $(installdir)%" > >>sedscript > echo > "/^exec_installdir=/s%=.*%=$(exec_installdir)%" > >>sedscript > echo "/^srcdir=/s%=.*%= $(srcdir)%" >>sedscript > echo "/^VPATH=/s%=.*%= $(VPATH)%" >>sedscript > echo "/^LINKPATH=/s%=.*%= $(LINKPATH)%" >>sedscript > echo "/^BASELIB=/s%=.*%= $(BASELIB)%" >>sedscript > echo "/^BASESETUP=/s%=.*%= $(BASESETUP)%" > >>sedscript > > # Bootstrap target > boot: clobber > VERSION=`$(PYTHON) -c "import sys; print > sys.version[:3]"`; \ > installdir=`$(PYTHON) -c "import sys; print > sys.prefix"`; \ > exec_installdir=`$(PYTHON) -c "import sys; print > sys.exec_prefix"`; \ > $(MAKE) -f $(srcdir)/Makefile.pre.in VPATH=$(VPATH) > srcdir=$(srcdir) \ > VERSION=$$VERSION \ > installdir=$$installdir \ > exec_installdir=$$exec_installdir \ > Makefile > > # Handy target to remove intermediate files and > backups > clean: > -rm -f *.o *~ > > # Handy target to remove everything that is easily > regenerated > clobber: clean > -rm -f *.a tags TAGS config.c Makefile.pre > $(TARGET) sedscript > -rm -f *.so *.sl so_locations > > > # Handy target to remove everything you don't want > to distribute > distclean: clobber > -rm -f Makefile Setup > > > > int add(int a, int b) > { > return (int)(a+b); > } > > #include > #include "mymath.h" > > PyObject* > pyfunc_mymath(self, args) > PyObject *self, *args; > { > PyObject *result; > int res, a, b; > if(!PyArg_ParseTuple(args,"ii:mymath",&a,&b)) > return NULL; > res = mymath(a,b); > result = Py_BuildValue("i",res); > return result; > } > > static PyMethodDef mymathMethods[] = > { > {"mymath", pyfunc_mymath, METH_VARARGS}, > {NULL,NULL} > }; > > void initmymath() > { > (void) Py_InitModule("mymath", mymathMethods); > } > > > *shared* > mymath_wrapper mymath_wrapper.c > __________________________________________________ Do You Yahoo!? Bid and sell for free at http://auctions.yahoo.com From alan.gauld@bt.com Thu Sep 16 09:42:59 1999 From: alan.gauld@bt.com (alan.gauld@bt.com) Date: Thu, 16 Sep 1999 09:42:59 +0100 Subject: [Tutor] "Learning Python" Chapter Exercise Message-ID: <5104D4DBC598D211B5FE0000F8FE7EB202DF5E1D@mbtlipnt02.btlabs.bt.co.uk> > At the end of chapter one, I managed to get the first question, but > can't work out the second, which is to create a one line > module: print > "hello module world', saved as module1.py > > The book uses Linux (or unix) examples and I am (for now) running > windows. Best bet is start a command prompt(aka MS DOs box) and CD to the folder containing your module(say C:\Projects\Python): Then type: C:\Projects\Python> python module1.py If you want to run it from anywhjere you have to set the PYTHONPATH environment variable in your autoexec.bat Its similar to the DOS Path VARIABLE... Alan g. From alan.gauld@bt.com Thu Sep 16 09:59:33 1999 From: alan.gauld@bt.com (alan.gauld@bt.com) Date: Thu, 16 Sep 1999 09:59:33 +0100 Subject: [Tutor] little pythons Message-ID: <5104D4DBC598D211B5FE0000F8FE7EB202DF5E1E@mbtlipnt02.btlabs.bt.co.uk> > a 12-year old. I know that Seymor Papert of MIT was very enthusiastic > about teaching LOGO to children. He desribes his experiences in a book I used LOGO to teach a 14 year old and it was quite successful. Unfortunately LOGO is more like LISP than any of the 'normal' languages so making the transition to VB or even Python is a big jump... > (and links to download them). Pyhon does have a turtle module, so dear to > the hearts of LOGO-minded people, so it is certainly possible to start > python, and then do something like Oh dear, I know Turtle graphics started with Logo but Logo is much more than that. It is a full list prpocessing language like lisp. The turtle graphics are only one small part and pretty boring in my experience unless you have one of the proper turtle robots that crawls over the floor! >>> import turtle >>> joe = turtle.Pen() >>> lisa = turtle.Pen() >>> joe.down() >>> joe.forward(50) >>> lisa.right() But if you want to use turtle graphics logo, smalltalk and yes, python will all do a spliendid job. Alan G. From alan.gauld@bt.com Thu Sep 16 10:18:41 1999 From: alan.gauld@bt.com (alan.gauld@bt.com) Date: Thu, 16 Sep 1999 10:18:41 +0100 Subject: [Tutor] (no subject) Message-ID: <5104D4DBC598D211B5FE0000F8FE7EB202DF5E23@mbtlipnt02.btlabs.bt.co.uk> > ... for x in range(2, n): > ... if n % x == 0:( I don't understand the n%x It means find the remainder of an integer division. Thus 7 divided by 3 is 2 remainder 1 So, 7/3 => 2 7%3 => 1 Thus n%x == 0 is true when the number held in n is exactlty divisible by the number in x. And thus n cannot be a prime number... Alan G. From eroubinc@u.washington.edu Thu Sep 16 18:01:51 1999 From: eroubinc@u.washington.edu (Evgeny Roubinchtein) Date: Thu, 16 Sep 1999 10:01:51 -0700 (PDT) Subject: [Tutor] little pythons In-Reply-To: <5104D4DBC598D211B5FE0000F8FE7EB202DF5E1E@mbtlipnt02.btlabs.bt.co.uk> Message-ID: On Thu, 16 Sep 1999 alan.gauld@bt.com wrote: >I used LOGO to teach a 14 year old and it was quite successful. >Unfortunately LOGO is more like LISP than any of the 'normal' >languages so making the transition to VB or even Python is a >big jump... But seeing past the syntax of the language at hand and learning to appreciate the concepts involved might be a good practice -- maybe not to begin with. >> (and links to download them). Pyhon does have a turtle module, so dear to > >Oh dear, I know Turtle graphics started with Logo but Logo is >much more than that. It is a full list prpocessing language >like lisp. The turtle graphics are only one small part >and pretty boring in my experience unless you have one of >the proper turtle robots that crawls over the floor! So, I am curious, what ideas do you have in mind for teaching programming to a 12-year old with Python? I am reasonably certain Python is flexible enough to do just about anything you can do in LOGO or LISP. What's wrong with translating a LOGO book into Python, for instance? -- Evgeny Roubinchtein, eroubinc@u.washington.edu ................... DO: Deadstart Operator From alan.gauld@bt.com Thu Sep 16 18:18:43 1999 From: alan.gauld@bt.com (alan.gauld@bt.com) Date: Thu, 16 Sep 1999 18:18:43 +0100 Subject: [Tutor] little pythons Message-ID: <5104D4DBC598D211B5FE0000F8FE7EB202DF5E37@mbtlipnt02.btlabs.bt.co.uk> > From: Evgeny Roubinchtein [mailto:eroubinc@u.washington.edu] Wow, bizarre, I was just reading this message on the Web digest on the python page when it popped into my mailbox! > >Unfortunately LOGO is more like LISP than any of the 'normal' > >languages so making the transition to VB or even Python is a > >big jump... > > But seeing past the syntax of the language at hand and learning to > appreciate the concepts involved might be a good practice -- maybe not > to begin with. I agree in principle but as you say - not to begin with. > >Oh dear, I know Turtle graphics started with Logo but Logo is > >much more than that. It is a full list prpocessing language > ... > So, I am curious, what ideas do you have in mind for teaching > programming to a 12-year old with Python? > ... > What's wrong > with translating a LOGO book into Python, for instance? Nothing at all. I was merely responding to the common misconception that teaching Logo means teaching turtle graphics. The idea started in Logo but is available elsewhere and indeed there are even (a very few)Logos around without turtle graphics. What makes Logo good for youngsters is not just the turtles but also its simple syntax(even easier than Python IMHO). Unfortunately that turns out to be a bit of a dead end for youngsters because its a big jump to anything else. Which is what I was trying to say earlier. There's even an OO LOGO and a full MFC encapsulation for windows programming - no turtles in sight. BUT Python can do the turtle graphics just as well as LOGO. Also, its an easier jump to VB etc - which most youngsters want to do because they want to build GUI based programs and VB is almost certainly the easiest way to do that. Python will instill good habits before they move and some may even stick with it and become regular Python programmers! :-). Alan G. From skip@mojam.com (Skip Montanaro) Thu Sep 16 19:27:55 1999 From: skip@mojam.com (Skip Montanaro) (Skip Montanaro) Date: Thu, 16 Sep 1999 13:27:55 -0500 (CDT) Subject: [Tutor] Re: [Python-Help] compliing error and linkage error In-Reply-To: <19990915222103.18973.rocketmail@web219.mail.yahoo.com> References: <19990915222103.18973.rocketmail@web219.mail.yahoo.com> Message-ID: <14305.13995.678136.849157@dolphin.mojam.com> >> >>> import mymath >> Traceback (innermost last): >> File "", line 1, in ? >> ImportError: No module named mymath >> >>> import mymath_wrapper >> Traceback (innermost last): >> File "", line 1, in ? >> ImportError: ld.so.1: python: fatal: relocation >> error: file ./mymath_wrapper.so: symbol mymath: >> referenced symbol not found Edward, There are a few things to check when you have import problems, especially for the first module or two you write. 1. Make sure your C source file is named mymath.c or mymathmodule.c. 2. If you want your module statically linked into Python, make sure either the *shared* line in your Setup file was commented out or at least appears after the definition for your module. In this case you will have to rebuild Python. 3. If you want your module dynamically linked into Python, make sure the *shared* line is uncommented and appears in you Setup file before the definition for your module. If both conditions don't hold, make won't generate the proper type of output file. Also, make sure that the generated shared object file (mymath.so or mymathmodule.so for Solaris I think) resides somewhere on sys.path. For testing, you can just execute Python from the directory containing mymath.so or mymathmodule.so, since that is in sys.path by default. You can examine sys.path from the Python prompt by executing >>> import sys >>> print sys.path Skip Montanaro | http://www.mojam.com/ skip@mojam.com | http://www.musi-cal.com/~skip/ 847-971-7098 | Python: Programming the way Guido indented... From ed_tsang@yahoo.com Thu Sep 16 22:43:50 1999 From: ed_tsang@yahoo.com (Edward Tsang) Date: Thu, 16 Sep 1999 14:43:50 -0700 (PDT) Subject: [Tutor] can I pass a "structure" to a C function to init a C struct? Message-ID: <19990916214350.19562.rocketmail@web215.mail.yahoo.com> A new question: I'm trying this: 1) create something similar to C structure with a number of fields say 3 fields: a, b, c. a will hold integer value b will hold a string c will hold a float 2) Python script will pass this to a C function called initStruct through a wrapper function. 3)initStruct will initalise its a global structure according to a,b,and c. its global structure also contains three fields: i,j,k. i being an integer, j a string,, c a float. But they are C type. 4) it will return the values to python script 5) python script will know how to convert it back and display on screen Can anyone tell me what is teh best way to do that? Is that possible??? What is the most appropriate method to create a __________________________________________________ Do You Yahoo!? Bid and sell for free at http://auctions.yahoo.com From arcege@shore.net Fri Sep 17 00:29:42 1999 From: arcege@shore.net (Michael P. Reilly) Date: Thu, 16 Sep 1999 19:29:42 -0400 (EDT) Subject: [Tutor] can I pass a "structure" to a C function to init a C struct? In-Reply-To: <19990916214350.19562.rocketmail@web215.mail.yahoo.com> from Edward Tsang at "Sep 16, 99 02:43:50 pm" Message-ID: <199909162329.TAA12930@northshore.shore.net> > A new question: > I'm trying this: > 1) create something similar to C structure with a number of fields say > 3 fields: a, b, c. > a will hold integer value > b will hold a string > c will hold a float > 2) Python script will pass this to a C function called > initStruct through a wrapper function. > 3)initStruct will initalise its a global structure according to a,b,and > c. its global structure also contains three fields: i,j,k. i being an > integer, j a string,, c a float. But they are C type. > 4) it will return the values to python script > 5) python script will know how to convert it back and display on screen > > Can anyone tell me what is teh best way to do that? Is that possible??? You will want to look at the "struct" module which encodes data as a byte array (which is how a C struct is laid out in memory). Since you don't say what the integer is, I'll assume it is a long. Also you do not specify what the "string" is; is it a character array or a pointer to a char? Let's say that it is a character array. >>> import struct >>> fmt = "l20sf" >>> data = struct.pack(fmt, a, b, c) >>> print data '\377\000\000\000knights who say ni\000\000\320\017I@' >>> print struct.unpack(fmt, data) (255, 'knights who say ni\000\000', 3.14159011841) Then in the C function, overlay the resulting string as a pointer to the struct you want. When converting the data back, you need to deal with the null characters ('\000') in the unpacked string. struct b_struct { int a; char b[20]; float c; } *b; PyObject *string_from_python; if (PyString_Size(string_from_python) != sizeof(struct b_struct)) { PyErr_SetString(PyExc_AssertionError, "Given string not a good size"); return NULL; } b = (struct b_struct *)PyString_AsString(string_from_python); printf("%d\n%s\n%f\n", b->a, b->b, b-c); Pointers will be more difficult since references are always dereferenced in Python. To handle pointers, you will need to write a C function. -Arcege -- ------------------------------------------------------------------------ | Michael P. Reilly, Release Engineer | Email: arcege@shore.net | | Salem, Mass. USA 01970 | | ------------------------------------------------------------------------ From ed_tsang@yahoo.com Fri Sep 17 06:01:13 1999 From: ed_tsang@yahoo.com (Edward Tsang) Date: Thu, 16 Sep 1999 22:01:13 -0700 (PDT) Subject: [Tutor] can I pass a "structure" to a C function to init a C struct? Message-ID: <19990917050113.5775.rocketmail@web201.mail.yahoo.com> Hello, I have tried on the code I encountered segmentation fault error when it at the if(PyString_size(string_from_python) != sizeof(struct b_struct) statement. Can anyone give a hand? --- "Michael P. Reilly" wrote: > > A new question: > > I'm trying this: > > 1) create something similar to C structure with a > number of fields say > > 3 fields: a, b, c. > > a will hold integer value > > b will hold a string > > c will hold a float > > 2) Python script will pass this to a C function > called > > initStruct through a wrapper function. > > 3)initStruct will initalise its a global structure > according to a,b,and > > c. its global structure also contains three > fields: i,j,k. i being an > > integer, j a string,, c a float. But they are C > type. > > 4) it will return the values to python script > > 5) python script will know how to convert it back > and display on screen > > > > Can anyone tell me what is teh best way to do > that? Is that possible??? > > You will want to look at the "struct" module which > encodes data as a > byte array (which is how a C struct is laid out in > memory). > > Since you don't say what the integer is, I'll assume > it is a long. Also > you do not specify what the "string" is; is it a > character array or a > pointer to a char? Let's say that it is a character > array. > > >>> import struct > >>> fmt = "l20sf" > >>> data = struct.pack(fmt, a, b, c) > >>> print data > '\377\000\000\000knights who say > ni\000\000\320\017I@' > >>> print struct.unpack(fmt, data) > (255, 'knights who say ni\000\000', 3.14159011841) > > Then in the C function, overlay the resulting string > as a pointer to > the struct you want. When converting the data back, > you need to deal > with the null characters ('\000') in the unpacked > string. > > struct b_struct { > int a; > char b[20]; > float c; > } *b; > PyObject *string_from_python; > if (PyString_Size(string_from_python) != > sizeof(struct b_struct)) { > PyErr_SetString(PyExc_AssertionError, "Given > string not a good size"); > return NULL; > } > b = (struct b_struct > *)PyString_AsString(string_from_python); > printf("%d\n%s\n%f\n", b->a, b->b, b-c); > > Pointers will be more difficult since references are > always > dereferenced in Python. To handle pointers, you > will need to write a C > function. > > -Arcege > > -- > ------------------------------------------------------------------------ > | Michael P. Reilly, Release Engineer | Email: > arcege@shore.net | > | Salem, Mass. USA 01970 | > | > ------------------------------------------------------------------------ > __________________________________________________ Do You Yahoo!? Bid and sell for free at http://auctions.yahoo.com From bryan.hann@pobox.com Thu Sep 16 20:05:56 1999 From: bryan.hann@pobox.com (Bryan Hann) Date: Fri, 17 Sep 1999 03:05:56 +0800 Subject: [Tutor] Learning Project Proposal (was: Help needed?) References: <19990915015159.3309.qmail@ww184.netaddress.usa.net> Message-ID: <37E13F94.46F33C4D@pobox.com> Wayne, I post this to the list because it might be a worthwhile learning project for others here. I have a little project that might be nifty. I assume you are familiar with regular expressions. Python's re module leaves some things to be desired. Suppose I want to build a RE to match identifiers built out of letters, numbers and/or underscores, but not starting with a number. This pattern should work: identifier="(_|a-z|A-Z)(_|a-z|A-Z|0-9)*' But things can soon get messy. It would be nice to be able to write something like letter="_|a-z|A-Z" digit="0-9" identifier="letter+(letter|digit)*" But identifier is a pattern that, roughly speaking, does not match strings beginning with a letter, but instead matches strings that begin with the string "letter+" -- clearly not our intent! I propose a reBuilder class that will work like this: >>>foo=reBuilder() >>>foo.letter="_|a-z|A-Z" >>>foo.digit="0-9" >>>foo.id="letter+(letter|digit)*" >>>foo.letter "_|a-z|A-Z" >>>foo.digit "0-9" >>>foo.id "_|a-z|A-Z((_|a-z|A-Z)|(0-9))*" The class will work roughly by redefining __setattr__ and __getattr__ to make objects 1. accept re components in the form foo.x=y, 2. rewrite y appropriately, then 3. store (x,y) in the dictionary 4. have "foo.x" return the stored string Rewriting will involve at least scanning y for substrings referring to previous components, and removing '+' and adding parentheses as necessary. More is needed to handle the full re syntax in the re module, but it will not be hard, and if you are very new to Python, you might find it nicely reinforces some of the nicer semantics of the language. I will begin writing soon. If this interests you, why don't we develop in parallel, and compare our results? We can swap ideas along the way. It should be a small project. If we want to extend it, we can unify our strategy and divide the work. Cheers! --Bryan Wayne wrote: > > ...I know I'm going to regret this, but I've recently started learning Python > {I know a little [Perl, Java, C, C++, Scheme, Clips], enough to cause problems > on the system without understanding what went wrong}. However, I don't have > any ideas on good projects to start working on to help solidify the learning. > > My question....does anyone need help with a project they are working on? Most > of the time I have will be on the weekends. I was thinking about starting to > port various Perl modules to Python as a way to get more familiar with > things. -- ================================================================== Bryan Hann -- bryan.hann@pobox.com -- www.pobox.com/~bryan.hann The RITE Group: Researching Information Technology in Education. ================================================================== From pfjakub@earthlink.net Fri Sep 17 15:13:56 1999 From: pfjakub@earthlink.net (Peter Jakubowicz) Date: Fri, 17 Sep 1999 07:13:56 -0700 Subject: [Tutor] Setting Path Message-ID: <37E24CA4.AA80AE07@earthlink.net> Hi, I am confused by the following (I am running Python under MS-Windows): In order to pass a module to the intepreter, I have to switch to the directory in which I have saved my module, i.e., I can't pass it from the python shell. However, I can import my module from the shell. Should I be able to also pass the module to the interpreter from the shell, and what command should I place in my autoexec.bat file to do so. Any help would be much appreciated. TIA From ed_tsang@yahoo.com Fri Sep 17 19:45:07 1999 From: ed_tsang@yahoo.com (Edward Tsang) Date: Fri, 17 Sep 1999 11:45:07 -0700 (PDT) Subject: [Tutor] NEWBIE: init a multiple field C struct from Python easyily Message-ID: <19990917184507.15419.rocketmail@web202.mail.yahoo.com> Hey, I am trying to initialise a C structure from Python. My Aim is to init a C structure without passing each indivual elements through the interface, but rather package the whole thing and pass that it one time. Then the C may do somethign about it, initialise its won struct and pass back a struct with the same kind of elements but with different parameters. I am stuck with the intialising the C struct part, and have not clue how to convert the C struct back to a PyObject appropriate to pass back to the Python script. Please help . Below is the code. Error: segmentation fault occurres at PyArg_ParseTuple(args,"s:mymath",string_from_Python)) PyString_Size(string_from_Python)calls inside function pyfunc_mystruct Here is what I tried: From the python script I have: import struct import mymath_wrapper fmt = "120sf" a=255 b='knights who say ni' c=3.14159011841 data = struct.pack(fmt,a,b,c) mymath_wrapper.mystruct(data) in my mymath_wrapper.c file I have: #include #include "mymath.h" PyObject* pyfunc_mystruct(self, args) PyObject *self, *args; { PyObject* string_from_Python; if(!PyArg_ParseTuple(args,"s:mymath",string_from_Python)) return NULL; if(PyString_Size(string_from_Python)!= sizeof(struct diffstruct)) { PyErr_SetString(PyExc_AssertionError, "Given strgin not a good size"); return NULL; } globaldiffstruct = (diffstruct *)PyString_AsString(string_from_Python); printf("globaldiffstruct calling within C:%d %s %f\n",globaldiffstruct->a, globaldiffstruct->b,globaldiffstruct->c); /* python side will print the last res value*/ return string_from_Python; /* not correct, deal with this later */ } static PyMethodDef mymathMethods[] = { {"mystruct", pyfunc_mystruct, 1}, {NULL,NULL} }; void initmymath_wrapper() { (void) Py_InitModule("mymath_wrapper", mymathMethods); } __________________________________________________ Do You Yahoo!? Bid and sell for free at http://auctions.yahoo.com From warren@nightwares.com Fri Sep 17 19:53:59 1999 From: warren@nightwares.com (Warren 'The Howdy Man' Ockrassa) Date: Fri, 17 Sep 1999 13:53:59 -0500 Subject: [Tutor] Duplicating lists in variables? Message-ID: <37E28E47.E28300F@nightwares.com> I don't see an immediate way around this one. >>> foo = [1,2,3] >>> bar = foo >>> bar [1, 2, 3] >>> bar.append(4) >>> bar [1, 2, 3, 4] >>> foo [1, 2, 3, 4] When I append bar, IOW, foo gets modified too. Is there a way for me to actually *duplicate* a list or am I stuck just propagating pointers to one list? Thanks! -- warren ockrassa | nightwares | mailto:warren@nightwares.com From cwebster@nevada.edu Fri Sep 17 20:09:12 1999 From: cwebster@nevada.edu (Corran Webster) Date: Fri, 17 Sep 1999 12:09:12 -0700 (PDT) Subject: [Tutor] Duplicating lists in variables? In-Reply-To: <37E28E47.E28300F@nightwares.com> Message-ID: > I don't see an immediate way around this one. > > >>> foo = [1,2,3] > >>> bar = foo > >>> bar > [1, 2, 3] > >>> bar.append(4) > >>> bar > [1, 2, 3, 4] > >>> foo > [1, 2, 3, 4] > > When I append bar, IOW, foo gets modified too. Is there a way for me to > actually *duplicate* a list or am I stuck just propagating pointers to > one list? One way is: bar = foo[:] which copies the entire list by taking it as a slice. For more complex mutable objects, you might take a look at the copy module: import copy bar = copy.copy(foo) # same as above but works for any mutable object bar = copy.deepcopy(foo) # will copy any mutable objects contained in foo # and any mutables contained in _them_, and so # on... Regards, Corran From joe@strout.net Fri Sep 17 20:10:31 1999 From: joe@strout.net (Joseph J. Strout) Date: Fri, 17 Sep 1999 12:10:31 -0700 Subject: [Tutor] Duplicating lists in variables? In-Reply-To: <37E28E47.E28300F@nightwares.com> References: <37E28E47.E28300F@nightwares.com> Message-ID: >When I append bar, IOW, foo gets modified too. Is there a way for me to >actually *duplicate* a list? But of course! You could use the copy module, which can copy anything. But there's a sneaky way to use the slice operator which is more common: bar = foo[:] This works because the slice operator returns a new list which is a subset of the original. But if the subset starts at the beginning, and continues till the end, then it happens to be a copy of the entire list! Cheers, -- Joe ,------------------------------------------------------------------. | Joseph J. Strout Biocomputing -- The Salk Institute | | joe@strout.net http://www.strout.net | `------------------------------------------------------------------' From ivanlan@callware.com Fri Sep 17 20:16:04 1999 From: ivanlan@callware.com (Ivan Van Laningham) Date: Fri, 17 Sep 1999 13:16:04 -0600 Subject: [Tutor] Duplicating lists in variables? References: <37E28E47.E28300F@nightwares.com> Message-ID: <37E29374.71A5F270@callware.com> Hi All-- Warren 'The Howdy Man' Ockrassa wrote: > > I don't see an immediate way around this one. > > >>> foo = [1,2,3] > >>> bar = foo > >>> bar > [1, 2, 3] > >>> bar.append(4) > >>> bar > [1, 2, 3, 4] > >>> foo > [1, 2, 3, 4] > > When I append bar, IOW, foo gets modified too. Is there a way for me to > actually *duplicate* a list or am I stuck just propagating pointers to > one list? > Try this: foo = [1,2,3] bar = foo[:] print foo print bar bar.append(4) print foo print bar -ly y'rs, Ivan ---------------------------------------------- Ivan Van Laningham Callware Technologies, Inc. ivanlan@callware.com ivanlan@home.com http://www.pauahtun.org See also: http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 ---------------------------------------------- From dlhiggs@netins.net Fri Sep 17 23:14:12 1999 From: dlhiggs@netins.net (donald higgs) Date: Fri, 17 Sep 1999 15:14:12 -0700 Subject: [Tutor] (the reply's additional "re:"is ok) Message-ID: <001501bf0159$f9a7bce0$9b0b8ea7@dlhiggs> This is a multi-part message in MIME format. ------=_NextPart_000_0012_01BF011F.4C2D14A0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable comfirm 262707 ------=_NextPart_000_0012_01BF011F.4C2D14A0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
comfirm 262707
------=_NextPart_000_0012_01BF011F.4C2D14A0-- From ed_tsang@yahoo.com Fri Sep 17 22:04:29 1999 From: ed_tsang@yahoo.com (Edward Tsang) Date: Fri, 17 Sep 1999 14:04:29 -0700 (PDT) Subject: [Tutor] general question about python integration with C Message-ID: <19990917210429.26670.rocketmail@web201.mail.yahoo.com> I have a general question about python integration with C. I have the current situation from what I want to drive to the outter most triggering source. 0) a bunch of C App programs 1) a C wrapper file as conversion medium between a python script and the C application program 2) a python script. My aim is to use a python script to drive some triggers to the C App programs. But I will need to input a lot of parameters as input values either for initialisation purspose or as driver input parameters. Since if I use a seperate driver written soley in C, whenever I change some input parameters, I need to recompile and link the whole thing. I hope to use python to hold those changable parameters, pass it to C Apps. So whenever I need to change the parameters, I only need to change the script without all those recompliation and linking thing. I may even change the driving sequence without recompliation. Now I run into this situation: I want to test the App program's ability to do interprocess communication. The way to do this is to have my C driver program in one process and My App program in another process. But in using Python extendsion to C. How can I have the driving programs(python script, C wrapper program) run in one process while my Apps program in another process? Or is there something I can do? If you have run in a similar situation, or you are using pyton to drive testing your Apps. What do you suggest? Thanks. __________________________________________________ Do You Yahoo!? Bid and sell for free at http://auctions.yahoo.com From arcege@shore.net Fri Sep 17 22:13:22 1999 From: arcege@shore.net (Michael P. Reilly) Date: Fri, 17 Sep 1999 17:13:22 -0400 (EDT) Subject: [Tutor] NEWBIE: init a multiple field C struct from Python easyily In-Reply-To: <19990917184507.15419.rocketmail@web202.mail.yahoo.com> from Edward Tsang at "Sep 17, 99 11:45:07 am" Message-ID: <199909172113.RAA10492@northshore.shore.net> Edward, I think it may be time to move this level of questioning to the Python list (mailto:python-list@python.org or news:comp.lang.python), or to the respondants directly. :) See my comments below. -Arcege > Hey, I am trying to initialise a C structure from Python. > My Aim is to init a C structure without passing each indivual elements > through the interface, but rather package the whole thing and pass that > it one time. Then the C may do somethign about it, initialise its won > struct and pass back a struct with the same kind of elements but with > different parameters. I am stuck with the intialising the C struct > part, and have not clue how to convert the C struct back to a PyObject > appropriate to pass back to the Python script. Please help . Below is > the code. > > Error: segmentation fault occurres at > PyArg_ParseTuple(args,"s:mymath",string_from_Python)) > PyString_Size(string_from_Python)calls inside > function pyfunc_mystruct > > Here is what I tried: > > >From the python script I have: > import struct > import mymath_wrapper > fmt = "120sf" > a=255 > b='knights who say ni' > c=3.14159011841 > data = struct.pack(fmt,a,b,c) > mymath_wrapper.mystruct(data) > > in my mymath_wrapper.c file I have: > #include > #include "mymath.h" > > PyObject* > pyfunc_mystruct(self, args) > PyObject *self, *args; > { > PyObject* string_from_Python; > if(!PyArg_ParseTuple(args,"s:mymath",string_from_Python)) > return NULL; Using a small "s" returns a (char *), using a capital "S" returns a (PyObject *). The segmentation fault is from attempting to access a character array as the fields of a PyObject *. > if(PyString_Size(string_from_Python)!= sizeof(struct diffstruct)) > { > PyErr_SetString(PyExc_AssertionError, "Given strgin not a good > size"); > return NULL; > } > > > globaldiffstruct = (diffstruct > *)PyString_AsString(string_from_Python); > > printf("globaldiffstruct calling within C:%d %s > %f\n",globaldiffstruct->a, globaldiffstruct->b,globaldiffstruct->c); > /* python side will print the last res value*/ > return string_from_Python; /* not correct, deal with this later */ > } > > static PyMethodDef mymathMethods[] = > { > {"mystruct", pyfunc_mystruct, 1}, > {NULL,NULL} > }; > > void initmymath_wrapper() > { > (void) Py_InitModule("mymath_wrapper", mymathMethods); > } -- ------------------------------------------------------------------------ | Michael P. Reilly, Release Engineer | Email: arcege@shore.net | | Salem, Mass. USA 01970 | | ------------------------------------------------------------------------ From deirdre@deirdre.net Fri Sep 17 22:22:09 1999 From: deirdre@deirdre.net (Deirdre Saoirse) Date: Fri, 17 Sep 1999 14:22:09 -0700 (PDT) Subject: [Tutor] NEWBIE: init a multiple field C struct from Python easyily In-Reply-To: <199909172113.RAA10492@northshore.shore.net> Message-ID: On Fri, 17 Sep 1999, Michael P. Reilly wrote: > Edward, I think it may be time to move this level of questioning to the > Python list (mailto:python-list@python.org or news:comp.lang.python), or > to the respondants directly. :) Actually, I was finding it very interesting. :) -- _Deirdre * http://www.linuxcabal.net * http://www.deirdre.net "I must say that I was really happy to see _Linux for Dummies_ -- that's when you know you've arrived." -- Linus Torvalds From Alexandre Passos" This is a multi-part message in MIME format. ------=_NextPart_000_0082_01BF01D4.7B731F60 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable In Conectiva Linux 4.0 I found a python GUI module. It uses a TK builder = called GTK and transfers it to python. The module is called pygtk.=20 ------=_NextPart_000_0082_01BF01D4.7B731F60 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
In Conectiva Linux 4.0 I found a = python GUI=20 module. It uses a TK builder called GTK and transfers it to python. The=20 module  is called pygtk.
------=_NextPart_000_0082_01BF01D4.7B731F60-- From Alexandre Passos" This is a multi-part message in MIME format. ------=_NextPart_000_007B_01BF01D4.3A9067A0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable I'm a 12 year-old children and want to learn python. I know LOGO turtle = and QBASIC. Logo is a very weird language and it hides the = documentation. Python is nicer for begginners. But basic should be tried = first because it's sintax is very similar to english. ------=_NextPart_000_007B_01BF01D4.3A9067A0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
I'm a 12 year-old children and want = to learn=20 python. I know LOGO turtle and QBASIC. Logo is a very weird language and = it=20 hides the documentation. Python is nicer for begginners. But basic = should be=20 tried first because it's sintax is very similar to english.
 
------=_NextPart_000_007B_01BF01D4.3A9067A0-- From seanconway@home.com Sun Sep 19 03:18:46 1999 From: seanconway@home.com (Sean Conway) Date: Sat, 18 Sep 1999 19:18:46 -0700 Subject: [Tutor] Printing Multiple Objects, no spaces Message-ID: <001701bf0245$4def7180$0528a8c0@home> Hello all. I need to print multiple objects, without spaces in between. This method doesn't work: print foo, foobar Thanks in advance, Sean Conway From rushing@shreve.net Sat Sep 18 23:43:42 1999 From: rushing@shreve.net (rushing@shreve.net) Date: Sat, 18 Sep 1999 17:43:42 -0500 (CDT) Subject: [Tutor] accessing a postgresql database Message-ID: anyone know the syntax to access a postgresql database with a username and password? I can disable the postgresql password and it works, but i need to be able to use the password feature. ex. import pg dat = pg.connect('scribe', 'localhost') res = dat.query('select * from scribe') ..... From eroubinc@u.washington.edu Sun Sep 19 02:06:57 1999 From: eroubinc@u.washington.edu (Evgeny Roubinchtein) Date: Sat, 18 Sep 1999 18:06:57 -0700 (PDT) Subject: [Tutor] Printing Multiple Objects, no spaces In-Reply-To: <001701bf0245$4def7180$0528a8c0@home> Message-ID: On Sat, 18 Sep 1999, Sean Conway wrote: > >I need to print multiple objects, without spaces in between. This method >doesn't work: > >print foo, foobar print `foo` + `bar` , perhaps? The Language Reference says backqouting an object calls its __repr__ method, if you need to overwrite that. -- Evgeny Roubinchtein, eroubinc@u.washington.edu ................... "Today's subliminal thought is:" From loewis@informatik.hu-berlin.de Sun Sep 19 17:41:53 1999 From: loewis@informatik.hu-berlin.de (Martin von Loewis) Date: Sun, 19 Sep 1999 18:41:53 +0200 Subject: [Tutor] Re: [Python-Help] general question about python integration with C In-Reply-To: <19990917210429.26670.rocketmail@web201.mail.yahoo.com> (message from Edward Tsang on Fri, 17 Sep 1999 14:04:29 -0700 (PDT)) References: <19990917210429.26670.rocketmail@web201.mail.yahoo.com> Message-ID: <199909191641.SAA14443@pandora> > I want to test the App program's ability to do interprocess > communication. The way to do this is to have my C driver program in one > process and My App program in another process. > But in using Python extendsion to C. How can I have the driving > programs(python script, C wrapper program) run in one process while my > Apps program in another process? Or is there something I can do? > If you have run in a similar situation, or you are using pyton to drive > testing your Apps. What do you suggest? You should create a Python module for your C driver program. Please see the "extending and embedding" Python manual on how to create a new Python module. Then, the C driver code, and the Python script will both run in the same process; communicating to Your App via interprocess communication. Regards, Martin From da@ski.org Sun Sep 19 17:47:52 1999 From: da@ski.org (David Ascher) Date: Sun, 19 Sep 1999 09:47:52 -0700 (Pacific Daylight Time) Subject: [Tutor] Printing Multiple Objects, no spaces In-Reply-To: <001701bf0245$4def7180$0528a8c0@home> Message-ID: On Sat, 18 Sep 1999, Sean Conway wrote: > Hello all. > > I need to print multiple objects, without spaces in between. This method > doesn't work: > > print foo, foobar You need to use the sys.stdout.write() method directly, and build your strings yourself. For example: sys.stdout.write(str(foo)) sys.stdout.write(str(foobar)) Or more generically: objects = [foo, foobar] # put whatever you want here object_strings = map(str, objects) onebigstring = string.join(object_strings, '') # join w/o spaces sys.stdout.write(onebigstring) Or more concisely and harder-to-read: sys.stdout.write(string.join(map(str, objects), '')) BTW, that won't write the last newline, which you can just add with a +'\n' after the string construction. --david From piercew@netscape.net Sun Sep 19 20:06:17 1999 From: piercew@netscape.net (Wayne) Date: 19 Sep 99 12:06:17 PDT Subject: [Tutor] Re: learning Python Message-ID: <19990919190617.6250.qmail@www0c.netaddress.usa.net> > I post this to the list because it might be a worthwhile > learning project for others here. Thanks to everyone that sent me ideas on projects. I came across one where I work that I have decided to try out, hopefully it will help sneak Python in the door as well. Thanks again, Wayne ____________________________________________________________________ Get your own FREE, personal Netscape WebMail account today at http://webmail.netscape.com. From dcmx@hotmail.com Mon Sep 20 01:23:46 1999 From: dcmx@hotmail.com (Jihone Du) Date: Sun, 19 Sep 1999 17:23:46 MST Subject: [Tutor] please do not send me any more e-mails Message-ID: <19990920002346.71328.qmail@hotmail.com> tutor- i would like to cancel my subscribtion to your news letter. i have learned alot from the tutoring help, but unfortunelately i have no more use for your services. thank you Jihone ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com From ed_tsang@yahoo.com Mon Sep 20 02:36:58 1999 From: ed_tsang@yahoo.com (ET) Date: Sun, 19 Sep 1999 18:36:58 -0700 (PDT) Subject: [Tutor] Re: [Python-Help] general question about python integration with C Message-ID: <19990920013658.15261.rocketmail@web216.mail.yahoo.com> --0-424238335-937791418=:11258 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Hello Martin, Sorry I don't quite get what you say. Let me put in some sample code here. I have three files: 1) mymathtest.py as the python script 2) mymath_wrapper.c as the wrapper file to mymath.c 3) mymath.c is my App. From what I get, you are saying once I have this, then I can have 1) and 2) in the one process, and 3) as a seperate process? How? Can you show me a concrete example, may be by modifying the code I have as in attachment? --- Martin von Loewis wrote: > > I want to test the App program's ability to do > interprocess > > communication. The way to do this is to have my C > driver program in one > > process and My App program in another process. > > But in using Python extendsion to C. How can I > have the driving > > programs(python script, C wrapper program) run in > one process while my > > Apps program in another process? Or is there > something I can do? > > If you have run in a similar situation, or you are > using pyton to drive > > testing your Apps. What do you suggest? > > You should create a Python module for your C driver > program. Please > see the "extending and embedding" Python manual on > how to create a new > Python module. > > Then, the C driver code, and the Python script will > both run in the > same process; communicating to Your App via > interprocess > communication. > > Regards, > Martin > __________________________________________________ Do You Yahoo!? Bid and sell for free at http://auctions.yahoo.com --0-424238335-937791418=:11258 Content-Type: text/plain; name="mymathtest.py" Content-Description: mymathtest.py Content-Disposition: inline; filename="mymathtest.py" #!/tools/2.5.1/local/bin/python if __name__== '__main__': import sys import mymath_wrapper import struct print 'calling mymath_wrapper.c\n' print mymath_wrapper.mymath(1,2) print '\n' print 'without recomplilation, calling mymath_wrapper.c again\n' print mymath_wrapper.mymath(3,4) print 'using stucture to packed the init value before send' fmt = "l20sf" a = 250 b = 'knight who say ni' c = 3.14159011841 packed_data = struct.pack(fmt,a,b,c) # print struct.unpack(fmt, packed_data) print mymath_wrapper.mystruct(packed_data) --0-424238335-937791418=:11258 Content-Type: application/x-unknown-content-type-h_auto_file; name="mymath.h" Content-Transfer-Encoding: base64 Content-Description: mymath.h Content-Disposition: attachment; filename="mymath.h" dHlwZWRlZiBzdHJ1Y3QgYmxvY2tzdHJ1Y3QNCnsNCglpbnQgYTsgDQoJaW50 IGI7DQoJaW50IGM7DQp9IGJsb2Nrc3RydWN0Ow0KDQp0eXBlZGVmIHN0cnVj dCBkaWZmc3RydWN0DQp7DQoJaW50IGE7DQoJY2hhciBiWzIwXTsNCglmbG9h dCBjOw0KDQp9IGRpZmZzdHJ1Y3Q7DQoNCg0KYmxvY2tzdHJ1Y3QgZ2xvYmFs c3RydWN0Ow0KDQpkaWZmc3RydWN0ICpnbG9iYWxkaWZmc3RydWN0Ow0KDQpp bnQgbXltYXRoKGJsb2Nrc3RydWN0KiBsb2NhbHN0cnVjdCwgaW50IGEsIGlu dCBiKQ0Kew0KCXByaW50ZigibXltYXRoIGlzIGNhbGxlZFxuIik7DQoJbG9j YWxzdHJ1Y3QtPmEgPSBhOw0KCWxvY2Fsc3RydWN0LT5iID0gYjsNCglsb2Nh bHN0cnVjdC0+YyA9IGEgKyBiOwkNCglyZXR1cm4gKGludCkobG9jYWxzdHJ1 Y3QtPmMpOw0KfQ0KDQppbnQgbXltYXRoMihpbnQgYSwgaW50IGIpDQp7DQoJ cHJpbnRmKCJteW1hdGgyIGlzIGNhbGxlZFxuIik7DQoJZ2xvYmFsc3RydWN0 LmEgPSBhOw0KCWdsb2JhbHN0cnVjdC5iID0gYjsNCglnbG9iYWxzdHJ1Y3Qu YyA9IGEgKyBiOwkNCglyZXR1cm4gKGludCkoZ2xvYmFsc3RydWN0LmMpOw0K fQ0KDQppbnQgbXlzdHJ1Y3QoZGlmZnN0cnVjdCogbG9jYWxzdHJ1Y3QpDQp7 DQoJcHJpbnRmKCJteXN0cnVjdCBpcyBjYWxsZWRcbiIpOw0KCQkNCglyZXR1 cm4gMTsNCn0NCg== --0-424238335-937791418=:11258 Content-Type: application/x-unknown-content-type-c_auto_file; name="mymath_wrapper.c" Content-Transfer-Encoding: base64 Content-Description: mymath_wrapper.c Content-Disposition: attachment; filename="mymath_wrapper.c" I2luY2x1ZGUgPFB5dGhvbi5oPg0KI2luY2x1ZGUgIm15bWF0aC5oIg0KDQpQ eU9iamVjdCoNCnB5ZnVuY19teW1hdGgoc2VsZiwgYXJncykNCiBQeU9iamVj dCAqc2VsZiwgKmFyZ3M7DQogew0KIFB5T2JqZWN0ICpyZXN1bHQ7DQogaW50 IHJlcywgYSwgYjsNCiBibG9ja3N0cnVjdCBsb2NhbHN0cnVjdDsNCiANCiBp ZighUHlBcmdfUGFyc2VUdXBsZShhcmdzLCJpaTpteW1hdGgiLCZhLCZiKSkN CiAJcmV0dXJuIE5VTEw7DQogDQogLyogaW5pdGlhbGlzZSBhIGxvY2FsIHN0 cnVjdHVyZSAqLw0KIHJlcyA9IG15bWF0aCgmbG9jYWxzdHJ1Y3QsYSxiKTsN CiBwcmludGYoImxvY2Fsc3RydWN0IGE6JWQgYjolZCBjOiVkXG4iLGxvY2Fs c3RydWN0LmEsbG9jYWxzdHJ1Y3QuYixsb2NhbHN0cnVjdC5jKTsNCiAvKiBp bml0aWFsaXNlIGEgZ2xvYmFsIHN0cnVjdHVyZSwgZG9uJ3QgbmVlZCB0byBw YXNzIGluIGFkZHJlc3Mgb2YgZ2xvYmFsIHN0cnVjdCAqLw0KIHJlcyA9IG15 bWF0aDIoKGErMSksKGIrMSkpOw0KIHByaW50ZigiZ2xvYmFsc3RydWN0IGE6 JWQgYjolZCBjOiVkXG4iLGdsb2JhbHN0cnVjdC5hLGdsb2JhbHN0cnVjdC5i LGdsb2JhbHN0cnVjdC5jKTsNCiByZXN1bHQgPSBQeV9CdWlsZFZhbHVlKCJp IixyZXMpOw0KIA0KIC8qIHB5dGhvbiBzaWRlIHdpbGwgcHJpbnQgdGhlIGxh c3QgcmVzIHZhbHVlKi8NCiByZXR1cm4gcmVzdWx0Ow0KIH0NCiANCg0KUHlP YmplY3QqDQpweWZ1bmNfbXlzdHJ1Y3Qoc2VsZiwgYXJncykNCiBQeU9iamVj dCAqc2VsZiwgKmFyZ3M7DQogew0KIFB5T2JqZWN0KiBzdHJpbmdfZnJvbV9Q eXRob247DQogaWYoIVB5QXJnX1BhcnNlVHVwbGUoYXJncywiUzpteW1hdGgi LCZzdHJpbmdfZnJvbV9QeXRob24pICkNCiAJcmV0dXJuIE5VTEw7DQogaWYo UHlTdHJpbmdfU2l6ZShzdHJpbmdfZnJvbV9QeXRob24pIT0gc2l6ZW9mKHN0 cnVjdCBkaWZmc3RydWN0KSkNCiB7DQogCVB5RXJyX1NldFN0cmluZyhQeUV4 Y19Bc3NlcnRpb25FcnJvciwgIkdpdmVuIHN0cmdpbiBub3QgYSBnb29kIHNp emUiKTsNCiAJcmV0dXJuIE5VTEw7DQogfQ0KIA0KIGdsb2JhbGRpZmZzdHJ1 Y3QgPSAoZGlmZnN0cnVjdCAqKVB5U3RyaW5nX0FzU3RyaW5nKHN0cmluZ19m cm9tX1B5dGhvbik7DQogcHJpbnRmKCJnbG9iYWxkaWZmc3RydWN0IGNhbGxp bmcgd2l0aGluIEM6JWQgICVzICVmXG4iLGdsb2JhbGRpZmZzdHJ1Y3QtPmEs IGdsb2JhbGRpZmZzdHJ1Y3QtPmIsZ2xvYmFsZGlmZnN0cnVjdC0+Yyk7DQog LyogcHl0aG9uIHNpZGUgd2lsbCBwcmludCB0aGUgbGFzdCByZXMgdmFsdWUq Lw0KIHJldHVybiAoUHlPYmplY3QgKikgZ2xvYmFsZGlmZnN0cnVjdDsgLyog bm90IGNvcnJlY3QsIGRlYWwgd2l0aCB0aGlzIGxhdGVyICovDQogfQ0KIA0K IHN0YXRpYyBQeU1ldGhvZERlZiBteW1hdGhNZXRob2RzW10gPSANCiB7DQog CXsibXltYXRoIiwgcHlmdW5jX215bWF0aCwgMX0sDQogCXsibXltYXRoMiIs IHB5ZnVuY19teW1hdGgsIDF9LA0KIAl7Im15c3RydWN0IiwgcHlmdW5jX215 c3RydWN0LCAxfSwNCiAJe05VTEwsTlVMTH0NCiB9Ow0KIA0KIHZvaWQgaW5p dG15bWF0aF93cmFwcGVyKCkNCiB7DQogCSh2b2lkKSBQeV9Jbml0TW9kdWxl KCJteW1hdGhfd3JhcHBlciIsIG15bWF0aE1ldGhvZHMpOw0KIH0NCiANCg== --0-424238335-937791418=:11258-- From gerrit.holl@pobox.com Mon Sep 20 14:25:19 1999 From: gerrit.holl@pobox.com (Gerrit Holl) Date: Mon, 20 Sep 1999 15:25:19 +0200 Subject: [Tutor] Printing Multiple Objects, no spaces In-Reply-To: <001701bf0245$4def7180$0528a8c0@home> References: <001701bf0245$4def7180$0528a8c0@home> Message-ID: <19990920152518.A17178@optiplex.palga.uucp> Sean Conway: > Hello all. > > I need to print multiple objects, without spaces in between. This method > doesn't work: > > print foo, foobar > Several way: print "%s%s" % (foo, foobar) print foo + foobar sys.stdout.write(foo); sys.stdout.write(foobar) sys.stdout.write(foo+foobar) regards, Gerrit. -- RTFM: Read That FreshMeat From ed_tsang@yahoo.com Mon Sep 20 17:24:38 1999 From: ed_tsang@yahoo.com (ET) Date: Mon, 20 Sep 1999 09:24:38 -0700 (PDT) Subject: [Tutor] general question about python integration: repost code included Message-ID: <19990920162438.13527.rocketmail@web205.mail.yahoo.com> Hello, I noticed that my code attached last time are not displayed properly. So I included the code once more. Attached below is the ORIGIAL PROBLEM, FIRST ANSWER received and then the codes. Thanks -------------------------------------------------- POSTED: Hello Martin,Sorry I don't quite get what you say. Let me put in some sample code here.I have three files: 1) mymathtest.py as the python script 2) mymath_wrapper.c as the wrapper file to mymath.c3) mymath.c is my App. From what I get, you are saying once I have this, then I can have 1) and 2) in the one process, and 3) as aseperate process? How? Can you show me a concrete example, may be by modifying the code I have as in attachment? ORIGINAL PROBLEM: I want to test the App program's ability to do> interprocess communication. The way to do this is to have my C driver program in one process and My App program in another process. But in using Python extendsion to C. How can I have the driving programs(python script, C wrapper program) run in one process while my Apps program in another process? Or is there something I can do? If you have run in a similar situation, or you are using pyton to drive testing your Apps. What do you suggest? FIRST ANSWER: You should create a Python module for your C driver program. Please see the "extending and embedding" Python manual on how to create a new Python module. Then, the C driver code, and the Python script will both run in the same process; communicating to Your App via interprocess communication. Regards,Martin ________________________________________________ mymathtest.py #!/tools/2.5.1/local/bin/pythonif __name__== '__main__': import sys import mymath_wrapper import struct print 'calling mymath_wrapper.c\n' print mymath_wrapper.mymath(1,2) print '\n' print 'without recomplilation, calling mymath_wrapper.c again\n' print mymath_wrapper.mymath(3,4) print 'using stucture to packed the init value before send' fmt = "l20sf" a = 250 b = 'knight who say ni' c = 3.14159011841 packed_data = struct.pack(fmt,a,b,c) # print struct.unpack(fmt, packed_data) print mymath_wrapper.mystruct(packed_data) ------------------------------------------------------ mymath.h: typedef struct blockstruct { int a; int b; int c; } blockstruct; typedef struct diffstruct { int a; char b[20]; float c; } diffstruct; blockstruct globalstruct; diffstruct *globaldiffstruct; int mymath(blockstruct* localstruct, int a, int b) { printf("mymath is called\n"); localstruct->a = a; localstruct->b = b; localstruct->c = a + b; return (int)(localstruct->c); } int mymath2(int a, int b) { printf("mymath2 is called\n"); globalstruct.a = a; globalstruct.b = b; globalstruct.c = a + b; return (int)(globalstruct.c); } int mystruct(diffstruct* localstruct) { printf("mystruct is called\n"); return 1; } ------------------------------------------------------ mymath_wrapper.c: #include #include "mymath.h" PyObject* pyfunc_mymath(self, args) PyObject *self, *args; { PyObject *result; int res, a, b; blockstruct localstruct; if(!PyArg_ParseTuple(args,"ii:mymath",&a,&b)) return NULL; /* initialise a local structure */ res = mymath(&localstruct,a,b); printf("localstruct a:%d b:%d c:%d\n",localstruct.a,localstruct.b,localstruct.c); /* initialise a global structure, don't need to pass in address of global struct */ res = mymath2((a+1),(b+1)); printf("globalstruct a:%d b:%d c:%d\n",globalstruct.a,globalstruct.b,globalstruct.c); result = Py_BuildValue("i",res); /* python side will print the last res value*/ return result; } PyObject* pyfunc_mystruct(self, args) PyObject *self, *args; { PyObject* string_from_Python; if(!PyArg_ParseTuple(args,"S:mymath",&string_from_Python) ) return NULL; if(PyString_Size(string_from_Python)!= sizeof(struct diffstruct)) { PyErr_SetString(PyExc_AssertionError, "Given strgin not a good size"); return NULL; } globaldiffstruct = (diffstruct *)PyString_AsString(string_from_Python); printf("globaldiffstruct calling within C:%d %s %f\n",globaldiffstruct->a, globaldiffstruct->b,globaldiffstruct->c); /* python side will print the last res value*/ return (PyObject *) globaldiffstruct; /* not correct, deal with this later */ } static PyMethodDef mymathMethods[] = { {"mymath", pyfunc_mymath, 1}, {"mymath2", pyfunc_mymath, 1}, {"mystruct", pyfunc_mystruct, 1}, {NULL,NULL} }; void initmymath_wrapper() { (void) Py_InitModule("mymath_wrapper", mymathMethods); } __________________________________________________ Do You Yahoo!? Bid and sell for free at http://auctions.yahoo.com From webmaster@juwanet.org Thu Sep 23 11:07:21 1999 From: webmaster@juwanet.org (Reijo Paunonen) Date: Thu, 23 Sep 1999 13:07:21 +0300 Subject: [Tutor] Core python Binaries Message-ID: <3.0.5.32.19990923130721.00900e20@www.juwanet.org> Greetings from Finland !!! I am installing BSCW program to our server (Win NT4.0 server) and i need to know from where can i download "Core Python Binaries" for Wpy ?. I didnt find it. Also I am very grateful if u can guide me throught the whole installation. Its my first time when i try to do this and this software(BSCW) does not appear so often in Finnish servers. So it would be very big step to Finnish education too!!. Our network operates in field of education. www.juwanet.org Yours: Reijo Paunonen @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ Terveisin: @ Reijo Paunonen @@ @@ ATK-Tukihenkilö @@ @@ Juvan sivistystoimi. @@ JUWANET @@ tel.040-5688590 @@ @@ fax: 015-7551327 @@ @@ webmaster@juwanet.org @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ From teroc@zianet.com Mon Sep 27 14:50:41 1999 From: teroc@zianet.com (K P) Date: Mon, 27 Sep 1999 08:50:41 -0500 Subject: [Tutor] Identifying objects Message-ID: <13452518721335@zianet.com> How would I detect object recursing(that may not be the real term for it)? For example, I have: class myObject(): def myFunct(param) tempObj = myObject() tempObj.myFunct(tempObj) How would tempObj.myFunct determine that its own object was passed to it? Ken Ken From da@ski.org Mon Sep 27 17:14:42 1999 From: da@ski.org (David Ascher) Date: Mon, 27 Sep 1999 09:14:42 -0700 (Pacific Daylight Time) Subject: [Tutor] Identifying objects In-Reply-To: <13452518721335@zianet.com> Message-ID: On Mon, 27 Sep 1999, K P wrote: > How would I detect object recursing(that may not be the real term > for it)? For example, I have: > > class myObject(): > def myFunct(param) > > tempObj = myObject() > > tempObj.myFunct(tempObj) > > How would tempObj.myFunct determine that its own object was > passed to it? if param is self: ... Note that 'is' tests reference identity, while == tests value equality. --david From Moshe Zadka Mon Sep 27 17:50:33 1999 From: Moshe Zadka (Moshe Zadka) Date: Mon, 27 Sep 1999 18:50:33 +0200 (IST) Subject: [Tutor] Identifying objects In-Reply-To: <13452518721335@zianet.com> Message-ID: On Mon, 27 Sep 1999, K P wrote: > How would I detect object recursing(that may not be the real term > for it)? For example, I have: > > class myObject(): > def myFunct(param) > > tempObj = myObject() > > tempObj.myFunct(tempObj) > > How would tempObj.myFunct determine that its own object was > passed to it? There is an easy way, but I won't tell it to you, for fear you'll use it. Instead, try to fine a design which does not rely on RTTI, but on functionality. E.g., try to call appropriate methods in the object. -- Moshe Zadka . INTERNET: Learn what you know. Share what you don't. From ed_tsang@yahoo.com Mon Sep 27 19:11:32 1999 From: ed_tsang@yahoo.com (ET) Date: Mon, 27 Sep 1999 11:11:32 -0700 (PDT) Subject: [Tutor] installation of ExpectPy Message-ID: <19990927181132.16095.rocketmail@web207.mail.yahoo.com> During the installation of ExpectPy I used this: ./configure --with-python=../Python-1.5.2 --with-expect=/tools/2.5.1/local/lib but his is what I get when it says cannot compile with the pythonlibrary..... any heads up? Is there something I need to dwobload before this?? I have got the python from www.python.org. The final release one... This is the message displayed on teh screen: loading cache ./config.cachechecking host system type... sparc-sun-solaris2.7 checking for gcc... gccchecking whether the C compiler (gcc ) works... yes checking whether the C compiler (gcc ) is a cross-compiler... no checking whether we are using GNU C... yeschecking whether gcc accepts -g... yes checking whether gcc and cc understand -c and -o together... yes checking how to run the C preprocessor... gcc -Echecking for AIX... no checking for a BSD compatible install... /tools/2.5.1/local/bin/install-c checking for ranlib... ranlibchecking whether ln -s works... yes checking for rm... /bin/rmchecking for python... /tools/2.5.1/local/bin/python checking for expect... /tools/2.5.1/local/bin/expectchecking SO... .so checking LDSHARED... $(LD) -Gchecking LDEXE... $(LD)checking CCSHARED... checking Python version... 1.5checking Expect version... 5.26 checking Expect library location... -lexpect5.26 checking Tcl version (for testing)... checking use of Python Setup... no checking for openpty... nochecking for openpty in -lutil... no checking for cos in -lm... yeschecking for dlopen in -ldl... yes checking for pthread_create in -lpthread... yes checking for exp_expectv in -lexpect5.26... no checking for exp_expectv in -lexpect5.26... yes checking for PyObject_GetAttr in -lpython1.5... no checking for PyObject_GetAttr in -lpython1.5... (cached) no configure: error: Cannot compile with the Python library __________________________________________________ Do You Yahoo!? Bid and sell for free at http://auctions.yahoo.com From ed_tsang@yahoo.com Tue Sep 28 19:25:07 1999 From: ed_tsang@yahoo.com (ET) Date: Tue, 28 Sep 1999 11:25:07 -0700 (PDT) Subject: [Tutor] ExpectPy Installation problem --- attached config.log Message-ID: <19990928182507.23170.rocketmail@web216.mail.yahoo.com> ./configure --with-python=/s1/sqa/edwardt/Python/Python-1.5.2--with-expect=/tools/2.5.1/local/lib but this is what I get when it says cannot compile with the python library..... Any heads up? Is there something I need to dwobload before this?? I have got the python from www.python.org. The final release one... but for some reason, it is still trying to look for the network installed Python!!!! Attached below is the config.log: Please help experts!!! This file contains any messages produced by compilers while running configure, to aid debugging if configure makes a mistake. configure:568: checking host system type configure:659: checking for gcc configure:736: checking whether the C compiler (gcc ) works configure:750: gcc -o conftest conftest.c 1>&5 configure:770: checking whether the C compiler (gcc ) is a cross-compiler configure:775: checking whether we are using GNU C configure:784: gcc -E conftest.c configure:799: checking whether gcc accepts -g configure:828: checking whether gcc and cc understand -c and -o together configure:843: gcc -c conftest.c -o conftest.o 1>&5 configure:844: gcc -c conftest.c -o conftest.o 1>&5 configure:849: cc -c conftest.c 1>&5 configure:851: cc -c conftest.c -o conftest.o 1>&5 configure:852: cc -c conftest.c -o conftest.o 1>&5 configure:879: checking how to run the C preprocessor configure:900: gcc -E conftest.c >/dev/null 2>conftest.out configure:940: checking for AIX configure:974: checking for a BSD compatible install configure:1026: checking for ranlib configure:1053: checking whether ln -s works configure:1076: checking for rm configure:1116: checking for python configure:1155: checking for expect configure:1202: checking SO configure:1224: checking LDSHARED configure:1256: checking LDEXE configure:1279: checking CCSHARED configure:1341: checking Python version configure:1370: checking Expect version configure:1390: checking Expect library location configure:1435: checking Tcl version (for testing) configure:1473: checking use of Python Setup configure:1548: checking for openpty configure:1576: gcc -o conftest -g -O2 -I/s1/sqa/edwardt/Python/Python-1.5.2/Include -I/tools/2.5.1/local/lib -L/s1/sqa/edwardt/Python/Python-1.5.2 -L/tools/2.5.1/local/lib conftest.c 1>&5 /var/tmp/ccafaaHJ1.o: In function `main': /s1/sqa/edwardt/Python/ExpectPy-1.8/configure:1570: undefined reference to `openpty' configure: failed program was: #line 1553 "configure" #include "confdefs.h" /* System header to define __stub macros and hopefully few prototypes, which can conflict with char openpty(); below. */ #include /* Override any gcc2 internal prototype to avoid an error. */ /* We use char because int might match the return type of a gcc2 builtin and then its argument prototype would still apply. */ char openpty(); int main() { /* The GNU C library defines this for functions which it implements to always fail with ENOSYS. Some functions are actually named something starting with __ and the normal name is an alias. */ #if defined (__stub_openpty) || defined (__stub___openpty) choke me #else openpty(); #endif ; return 0; } configure:1598: checking for openpty in -lutil configure:1617: gcc -o conftest -g -O2 -I/s1/sqa/edwardt/Python/Python-1.5.2/Include -I/tools/2.5.1/local/lib -L/s1/sqa/edwardt/Python/Python-1.5.2 -L/tools/2.5.1/local/lib conftest.c -lutil 1>&5 /tools/2.5.1/local/sparc-sun-solaris2.5.1/bin/ld: cannot open -lutil: No such file or directory configure: failed program was: #line 1606 "configure" #include "confdefs.h" /* Override any gcc2 internal prototype to avoid an error. */ /* We use char because int might match the return type of a gcc2 builtin and then its argument prototype would still apply. */ char openpty(); int main() { openpty() ; return 0; } configure:1646: checking for cos in -lm configure:1665: gcc -o conftest -g -O2 -I/s1/sqa/edwardt/Python/Python-1.5.2/Include -I/tools/2.5.1/local/lib -L/s1/sqa/edwardt/Python/Python-1.5.2 -L/tools/2.5.1/local/lib conftest.c -lm 1>&5 configure:1658: warning: conflicting types for built-in function `cos' configure:1693: checking for dlopen in -ldl configure:1712: gcc -o conftest -g -O2 -I/s1/sqa/edwardt/Python/Python-1.5.2/Include -I/tools/2.5.1/local/lib -L/s1/sqa/edwardt/Python/Python-1.5.2 -L/tools/2.5.1/local/lib conftest.c -ldl -lm 1>&5 configure:1741: checking for pthread_create in -lpthread configure:1760: gcc -o conftest -g -O2 -I/s1/sqa/edwardt/Python/Python-1.5.2/Include -I/tools/2.5.1/local/lib -L/s1/sqa/edwardt/Python/Python-1.5.2 -L/tools/2.5.1/local/lib conftest.c -lpthread -ldl -lm 1>&5 configure:1877: checking for exp_expectv in -lexpect5.26 configure:1896: gcc -o conftest -g -O2 -I/s1/sqa/edwardt/Python/Python-1.5.2/Include -I/tools/2.5.1/local/lib -L/s1/sqa/edwardt/Python/Python-1.5.2 -L/tools/2.5.1/local/lib conftest.c -lexpect5.26 -ldl -lm 1>&5 /tools/2.5.1/local/lib/libexpect5.26.a(exp_clib.o): In function `exp_spawnv': /net/wrk/expect-5.26/exp_clib.c:282: undefined reference to `Tcl_ErrnoMsg' /net/wrk/expect-5.26/exp_clib.c:296: undefined reference to `Tcl_ErrnoMsg' /net/wrk/expect-5.26/exp_clib.c:369: undefined reference to `Tcl_ErrnoMsg' /net/wrk/expect-5.26/exp_clib.c:497: undefined reference to `Tcl_ErrnoMsg' /net/wrk/expect-5.26/exp_clib.c:509: undefined reference to `Tcl_ErrnoMsg' /tools/2.5.1/local/lib/libexpect5.26.a(exp_clib.o):/net/wrk/expect-5.26/exp_clib .c:532: more undefined references to `Tcl_ErrnoMsg' follow /tools/2.5.1/local/lib/libexpect5.26.a(exp_clib.o): In function `expectv': /net/wrk/expect-5.26/exp_clib.c:771: undefined reference to `TclRegError' /net/wrk/expect-5.26/exp_clib.c:772: undefined reference to `TclRegComp' /net/wrk/expect-5.26/exp_clib.c:773: undefined reference to `TclGetRegError' /net/wrk/expect-5.26/exp_clib.c:947: undefined reference to `TclRegError' /net/wrk/expect-5.26/exp_clib.c:948: undefined reference to `TclRegExec' /net/wrk/expect-5.26/exp_clib.c:952: undefined reference to `TclGetRegError' /net/wrk/expect-5.26/exp_clib.c:953: undefined reference to `TclGetRegError' /tools/2.5.1/local/lib/libexpect5.26.a(pty_termios.o): In function `exp_getptyslave': /net/wrk/expect-5.26/pty_termios.c:623: undefined reference to `Tcl_ErrnoMsg' /net/wrk/expect-5.26/pty_termios.c:626: undefined reference to `Tcl_ErrnoMsg' /net/wrk/expect-5.26/pty_termios.c:629: undefined reference to `Tcl_ErrnoMsg' configure: failed program was: #line 1885 "configure" #include "confdefs.h" /* Override any gcc2 internal prototype to avoid an error. */ /* We use char because int might match the return type of a gcc2 builtin and then its argument prototype would still apply. */ char exp_expectv(); int main() { exp_expectv() ; return 0; } configure:1920: checking for exp_expectv in -lexpect5.26 configure:1939: gcc -o conftest -g -O2 -I/s1/sqa/edwardt/Python/Python-1.5.2/Include -I/tools/2.5.1/local/lib -L/s1/sqa/edwardt/Python/Python-1.5.2 -L/tools/2.5.1/local/lib conftest.c -lexpect5.26 -ltcl -ldl -lm 1>&5 configure:2024: checking for PyObject_GetAttr in -lpython1.5 configure:2043: gcc -o conftest -g -O2 -I/s1/sqa/edwardt/Python/Python-1.5.2/Include -I/tools/2.5.1/local/lib -L/s1/sqa/edwardt/Python/Python-1.5.2 -L/tools/2.5.1/local/lib conftest.c -lpython1.5 -ldl -lm 1>&5 /s1/sqa/edwardt/Python/Python-1.5.2/libpython1.5.a(socketmodule.o): In function `setipaddr': /s1/sqa/poonam/python/Python-1.5.2/Modules/./socketmodule.c:404: undefined reference to `gethostbyname' /s1/sqa/edwardt/Python/Python-1.5.2/libpython1.5.a(socketmodule.o): In function `PySocketSock_accept': /s1/sqa/poonam/python/Python-1.5.2/Modules/./socketmodule.c:612: undefined reference to `accept' /s1/sqa/edwardt/Python/Python-1.5.2/libpython1.5.a(socketmodule.o): In function `PySocketSock_setsockopt': /s1/sqa/poonam/python/Python-1.5.2/Modules/./socketmodule.c:719: undefined reference to `setsockopt' /s1/sqa/edwardt/Python/Python-1.5.2/libpython1.5.a(socketmodule.o): In function `PySocketSock_getsockopt': /s1/sqa/poonam/python/Python-1.5.2/Modules/./socketmodule.c:759: undefined reference to `getsockopt' /s1/sqa/poonam/python/Python-1.5.2/Modules/./socketmodule.c:773: undefined reference to `getsockopt' /s1/sqa/edwardt/Python/Python-1.5.2/libpython1.5.a(socketmodule.o): In function `PySocketSock_bind': /s1/sqa/poonam/python/Python-1.5.2/Modules/./socketmodule.c:803: undefined reference to `bind' /s1/sqa/edwardt/Python/Python-1.5.2/libpython1.5.a(socketmodule.o): In function `PySocketSock_connect': /s1/sqa/poonam/python/Python-1.5.2/Modules/./socketmodule.c:854: undefined reference to `connect' /s1/sqa/edwardt/Python/Python-1.5.2/libpython1.5.a(socketmodule.o): In function `PySocketSock_connect_ex': /s1/sqa/poonam/python/Python-1.5.2/Modules/./socketmodule.c:880: undefined reference to `connect' /s1/sqa/edwardt/Python/Python-1.5.2/libpython1.5.a(socketmodule.o): In function `PySocketSock_getsockname': /s1/sqa/poonam/python/Python-1.5.2/Modules/./socketmodule.c:953: undefined reference to `getsockname' /s1/sqa/edwardt/Python/Python-1.5.2/libpython1.5.a(socketmodule.o): In function `PySocketSock_getpeername': /s1/sqa/poonam/python/Python-1.5.2/Modules/./socketmodule.c:980: undefined reference to `getpeername' /s1/sqa/edwardt/Python/Python-1.5.2/libpython1.5.a(socketmodule.o): In function `PySocketSock_listen': /s1/sqa/poonam/python/Python-1.5.2/Modules/./socketmodule.c:1008: undefined reference to `listen' /s1/sqa/edwardt/Python/Python-1.5.2/libpython1.5.a(socketmodule.o): In function `PySocketSock_recv': /s1/sqa/poonam/python/Python-1.5.2/Modules/./socketmodule.c:1083: undefined reference to `recv' /s1/sqa/edwardt/Python/Python-1.5.2/libpython1.5.a(socketmodule.o): In function `PySocketSock_recvfrom': /s1/sqa/poonam/python/Python-1.5.2/Modules/./socketmodule.c:1122: undefined reference to `recvfrom' /s1/sqa/edwardt/Python/Python-1.5.2/libpython1.5.a(socketmodule.o): In function `PySocketSock_send': /s1/sqa/poonam/python/Python-1.5.2/Modules/./socketmodule.c:1167: undefined reference to `send' /s1/sqa/edwardt/Python/Python-1.5.2/libpython1.5.a(socketmodule.o): In function `PySocketSock_sendto': /s1/sqa/poonam/python/Python-1.5.2/Modules/./socketmodule.c:1199: undefined reference to `sendto' /s1/sqa/edwardt/Python/Python-1.5.2/libpython1.5.a(socketmodule.o): In function `PySocketSock_shutdown': /s1/sqa/poonam/python/Python-1.5.2/Modules/./socketmodule.c:1223: undefined reference to `shutdown' /s1/sqa/edwardt/Python/Python-1.5.2/libpython1.5.a(socketmodule.o): In function `PySocket_gethostbyname_ex': /s1/sqa/poonam/python/Python-1.5.2/Modules/./socketmodule.c:1483: undefined reference to `gethostbyname' /s1/sqa/edwardt/Python/Python-1.5.2/libpython1.5.a(socketmodule.o): In function `PySocket_gethostbyaddr': /s1/sqa/poonam/python/Python-1.5.2/Modules/./socketmodule.c:1551: undefined reference to `gethostbyaddr' /s1/sqa/edwardt/Python/Python-1.5.2/libpython1.5.a(socketmodule.o): In function `PySocket_getservbyname': /s1/sqa/poonam/python/Python-1.5.2/Modules/./socketmodule.c:1583: undefined reference to `getservbyname' /s1/sqa/edwardt/Python/Python-1.5.2/libpython1.5.a(socketmodule.o): In function `PySocket_getprotobyname': /s1/sqa/poonam/python/Python-1.5.2/Modules/./socketmodule.c:1617: undefined reference to `getprotobyname' /s1/sqa/edwardt/Python/Python-1.5.2/libpython1.5.a(socketmodule.o): In function `PySocket_socket': /s1/sqa/poonam/python/Python-1.5.2/Modules/./socketmodule.c:1651: undefined reference to `socket' configure: failed program was: #line 2032 "configure" #include "confdefs.h" /* Override any gcc2 internal prototype to avoid an error. */ /* We use char because int might match the return type of a gcc2 builtin and then its argument prototype would still apply. */ char PyObject_GetAttr(); int main() { PyObject_GetAttr() ; return 0; } configure:2066: checking for PyObject_GetAttr in -lpython1.5 __________________________________________________ Do You Yahoo!? Bid and sell for free at http://auctions.yahoo.com From ed_tsang@yahoo.com Tue Sep 28 19:28:16 1999 From: ed_tsang@yahoo.com (ET) Date: Tue, 28 Sep 1999 11:28:16 -0700 (PDT) Subject: [Tutor] ExpectPy Installation problem --- problem restated. Message-ID: <19990928182816.4618.rocketmail@web218.mail.yahoo.com> I used this during installation of ExpectPy: ./configure --with-python=/s1/sqa/edwardt/Python/Python-1.5.2--with-expect=/tools/2.5.1/local/lib But it says cannot compile with the python library..... Any heads up? Is there something I need to download before this?? I have got the python from www.python.org. The final release one... But for some reason, the installation program is still trying to look for the network installed Python!!!! Attached below is the config.log: Please help experts!!! This file contains any messages produced by compilers while running configure, to aid debugging if configure makes a mistake. configure:568: checking host system type configure:659: checking for gcc configure:736: checking whether the C compiler (gcc ) works configure:750: gcc -o conftest conftest.c 1>&5 configure:770: checking whether the C compiler (gcc ) is a cross-compiler configure:775: checking whether we are using GNU C configure:784: gcc -E conftest.c configure:799: checking whether gcc accepts -g configure:828: checking whether gcc and cc understand -c and -o together configure:843: gcc -c conftest.c -o conftest.o 1>&5 configure:844: gcc -c conftest.c -o conftest.o 1>&5 configure:849: cc -c conftest.c 1>&5 configure:851: cc -c conftest.c -o conftest.o 1>&5 configure:852: cc -c conftest.c -o conftest.o 1>&5 configure:879: checking how to run the C preprocessor configure:900: gcc -E conftest.c >/dev/null 2>conftest.out configure:940: checking for AIX configure:974: checking for a BSD compatible install configure:1026: checking for ranlib configure:1053: checking whether ln -s works configure:1076: checking for rm configure:1116: checking for python configure:1155: checking for expect configure:1202: checking SO configure:1224: checking LDSHARED configure:1256: checking LDEXE configure:1279: checking CCSHARED configure:1341: checking Python version configure:1370: checking Expect version configure:1390: checking Expect library location configure:1435: checking Tcl version (for testing) configure:1473: checking use of Python Setup configure:1548: checking for openpty configure:1576: gcc -o conftest -g -O2 -I/s1/sqa/edwardt/Python/Python-1.5.2/Include -I/tools/2.5.1/local/lib -L/s1/sqa/edwardt/Python/Python-1.5.2 -L/tools/2.5.1/local/lib conftest.c 1>&5 /var/tmp/ccafaaHJ1.o: In function `main': /s1/sqa/edwardt/Python/ExpectPy-1.8/configure:1570: undefined reference to `openpty' configure: failed program was: #line 1553 "configure" #include "confdefs.h" /* System header to define __stub macros and hopefully few prototypes, which can conflict with char openpty(); below. */ #include /* Override any gcc2 internal prototype to avoid an error. */ /* We use char because int might match the return type of a gcc2 builtin and then its argument prototype would still apply. */ char openpty(); int main() { /* The GNU C library defines this for functions which it implements to always fail with ENOSYS. Some functions are actually named something starting with __ and the normal name is an alias. */ #if defined (__stub_openpty) || defined (__stub___openpty) choke me #else openpty(); #endif ; return 0; } configure:1598: checking for openpty in -lutil configure:1617: gcc -o conftest -g -O2 -I/s1/sqa/edwardt/Python/Python-1.5.2/Include -I/tools/2.5.1/local/lib -L/s1/sqa/edwardt/Python/Python-1.5.2 -L/tools/2.5.1/local/lib conftest.c -lutil 1>&5 /tools/2.5.1/local/sparc-sun-solaris2.5.1/bin/ld: cannot open -lutil: No such file or directory configure: failed program was: #line 1606 "configure" #include "confdefs.h" /* Override any gcc2 internal prototype to avoid an error. */ /* We use char because int might match the return type of a gcc2 builtin and then its argument prototype would still apply. */ char openpty(); int main() { openpty() ; return 0; } configure:1646: checking for cos in -lm configure:1665: gcc -o conftest -g -O2 -I/s1/sqa/edwardt/Python/Python-1.5.2/Include -I/tools/2.5.1/local/lib -L/s1/sqa/edwardt/Python/Python-1.5.2 -L/tools/2.5.1/local/lib conftest.c -lm 1>&5 configure:1658: warning: conflicting types for built-in function `cos' configure:1693: checking for dlopen in -ldl configure:1712: gcc -o conftest -g -O2 -I/s1/sqa/edwardt/Python/Python-1.5.2/Include -I/tools/2.5.1/local/lib -L/s1/sqa/edwardt/Python/Python-1.5.2 -L/tools/2.5.1/local/lib conftest.c -ldl -lm 1>&5 configure:1741: checking for pthread_create in -lpthread configure:1760: gcc -o conftest -g -O2 -I/s1/sqa/edwardt/Python/Python-1.5.2/Include -I/tools/2.5.1/local/lib -L/s1/sqa/edwardt/Python/Python-1.5.2 -L/tools/2.5.1/local/lib conftest.c -lpthread -ldl -lm 1>&5 configure:1877: checking for exp_expectv in -lexpect5.26 configure:1896: gcc -o conftest -g -O2 -I/s1/sqa/edwardt/Python/Python-1.5.2/Include -I/tools/2.5.1/local/lib -L/s1/sqa/edwardt/Python/Python-1.5.2 -L/tools/2.5.1/local/lib conftest.c -lexpect5.26 -ldl -lm 1>&5 /tools/2.5.1/local/lib/libexpect5.26.a(exp_clib.o): In function `exp_spawnv': /net/wrk/expect-5.26/exp_clib.c:282: undefined reference to `Tcl_ErrnoMsg' /net/wrk/expect-5.26/exp_clib.c:296: undefined reference to `Tcl_ErrnoMsg' /net/wrk/expect-5.26/exp_clib.c:369: undefined reference to `Tcl_ErrnoMsg' /net/wrk/expect-5.26/exp_clib.c:497: undefined reference to `Tcl_ErrnoMsg' /net/wrk/expect-5.26/exp_clib.c:509: undefined reference to `Tcl_ErrnoMsg' /tools/2.5.1/local/lib/libexpect5.26.a(exp_clib.o):/net/wrk/expect-5.26/exp_clib .c:532: more undefined references to `Tcl_ErrnoMsg' follow /tools/2.5.1/local/lib/libexpect5.26.a(exp_clib.o): In function `expectv': /net/wrk/expect-5.26/exp_clib.c:771: undefined reference to `TclRegError' /net/wrk/expect-5.26/exp_clib.c:772: undefined reference to `TclRegComp' /net/wrk/expect-5.26/exp_clib.c:773: undefined reference to `TclGetRegError' /net/wrk/expect-5.26/exp_clib.c:947: undefined reference to `TclRegError' /net/wrk/expect-5.26/exp_clib.c:948: undefined reference to `TclRegExec' /net/wrk/expect-5.26/exp_clib.c:952: undefined reference to `TclGetRegError' /net/wrk/expect-5.26/exp_clib.c:953: undefined reference to `TclGetRegError' /tools/2.5.1/local/lib/libexpect5.26.a(pty_termios.o): In function `exp_getptyslave': /net/wrk/expect-5.26/pty_termios.c:623: undefined reference to `Tcl_ErrnoMsg' /net/wrk/expect-5.26/pty_termios.c:626: undefined reference to `Tcl_ErrnoMsg' /net/wrk/expect-5.26/pty_termios.c:629: undefined reference to `Tcl_ErrnoMsg' configure: failed program was: #line 1885 "configure" #include "confdefs.h" /* Override any gcc2 internal prototype to avoid an error. */ /* We use char because int might match the return type of a gcc2 builtin and then its argument prototype would still apply. */ char exp_expectv(); int main() { exp_expectv() ; return 0; } configure:1920: checking for exp_expectv in -lexpect5.26 configure:1939: gcc -o conftest -g -O2 -I/s1/sqa/edwardt/Python/Python-1.5.2/Include -I/tools/2.5.1/local/lib -L/s1/sqa/edwardt/Python/Python-1.5.2 -L/tools/2.5.1/local/lib conftest.c -lexpect5.26 -ltcl -ldl -lm 1>&5 configure:2024: checking for PyObject_GetAttr in -lpython1.5 configure:2043: gcc -o conftest -g -O2 -I/s1/sqa/edwardt/Python/Python-1.5.2/Include -I/tools/2.5.1/local/lib -L/s1/sqa/edwardt/Python/Python-1.5.2 -L/tools/2.5.1/local/lib conftest.c -lpython1.5 -ldl -lm 1>&5 /s1/sqa/edwardt/Python/Python-1.5.2/libpython1.5.a(socketmodule.o): In function `setipaddr': /s1/sqa/poonam/python/Python-1.5.2/Modules/./socketmodule.c:404: undefined reference to `gethostbyname' /s1/sqa/edwardt/Python/Python-1.5.2/libpython1.5.a(socketmodule.o): In function `PySocketSock_accept': /s1/sqa/poonam/python/Python-1.5.2/Modules/./socketmodule.c:612: undefined reference to `accept' /s1/sqa/edwardt/Python/Python-1.5.2/libpython1.5.a(socketmodule.o): In function `PySocketSock_setsockopt': /s1/sqa/poonam/python/Python-1.5.2/Modules/./socketmodule.c:719: undefined reference to `setsockopt' /s1/sqa/edwardt/Python/Python-1.5.2/libpython1.5.a(socketmodule.o): In function `PySocketSock_getsockopt': /s1/sqa/poonam/python/Python-1.5.2/Modules/./socketmodule.c:759: undefined reference to `getsockopt' /s1/sqa/poonam/python/Python-1.5.2/Modules/./socketmodule.c:773: undefined reference to `getsockopt' /s1/sqa/edwardt/Python/Python-1.5.2/libpython1.5.a(socketmodule.o): In function `PySocketSock_bind': /s1/sqa/poonam/python/Python-1.5.2/Modules/./socketmodule.c:803: undefined reference to `bind' /s1/sqa/edwardt/Python/Python-1.5.2/libpython1.5.a(socketmodule.o): In function `PySocketSock_connect': /s1/sqa/poonam/python/Python-1.5.2/Modules/./socketmodule.c:854: undefined reference to `connect' /s1/sqa/edwardt/Python/Python-1.5.2/libpython1.5.a(socketmodule.o): In function `PySocketSock_connect_ex': /s1/sqa/poonam/python/Python-1.5.2/Modules/./socketmodule.c:880: undefined reference to `connect' /s1/sqa/edwardt/Python/Python-1.5.2/libpython1.5.a(socketmodule.o): In function `PySocketSock_getsockname': /s1/sqa/poonam/python/Python-1.5.2/Modules/./socketmodule.c:953: undefined reference to `getsockname' /s1/sqa/edwardt/Python/Python-1.5.2/libpython1.5.a(socketmodule.o): In function `PySocketSock_getpeername': /s1/sqa/poonam/python/Python-1.5.2/Modules/./socketmodule.c:980: undefined reference to `getpeername' /s1/sqa/edwardt/Python/Python-1.5.2/libpython1.5.a(socketmodule.o): In function `PySocketSock_listen': /s1/sqa/poonam/python/Python-1.5.2/Modules/./socketmodule.c:1008: undefined reference to `listen' /s1/sqa/edwardt/Python/Python-1.5.2/libpython1.5.a(socketmodule.o): In function `PySocketSock_recv': /s1/sqa/poonam/python/Python-1.5.2/Modules/./socketmodule.c:1083: undefined reference to `recv' /s1/sqa/edwardt/Python/Python-1.5.2/libpython1.5.a(socketmodule.o): In function `PySocketSock_recvfrom': /s1/sqa/poonam/python/Python-1.5.2/Modules/./socketmodule.c:1122: undefined reference to `recvfrom' /s1/sqa/edwardt/Python/Python-1.5.2/libpython1.5.a(socketmodule.o): In function `PySocketSock_send': /s1/sqa/poonam/python/Python-1.5.2/Modules/./socketmodule.c:1167: undefined reference to `send' /s1/sqa/edwardt/Python/Python-1.5.2/libpython1.5.a(socketmodule.o): In function `PySocketSock_sendto': /s1/sqa/poonam/python/Python-1.5.2/Modules/./socketmodule.c:1199: undefined reference to `sendto' /s1/sqa/edwardt/Python/Python-1.5.2/libpython1.5.a(socketmodule.o): In function `PySocketSock_shutdown': /s1/sqa/poonam/python/Python-1.5.2/Modules/./socketmodule.c:1223: undefined reference to `shutdown' /s1/sqa/edwardt/Python/Python-1.5.2/libpython1.5.a(socketmodule.o): In function `PySocket_gethostbyname_ex': /s1/sqa/poonam/python/Python-1.5.2/Modules/./socketmodule.c:1483: undefined reference to `gethostbyname' /s1/sqa/edwardt/Python/Python-1.5.2/libpython1.5.a(socketmodule.o): In function `PySocket_gethostbyaddr': /s1/sqa/poonam/python/Python-1.5.2/Modules/./socketmodule.c:1551: undefined reference to `gethostbyaddr' /s1/sqa/edwardt/Python/Python-1.5.2/libpython1.5.a(socketmodule.o): In function `PySocket_getservbyname': /s1/sqa/poonam/python/Python-1.5.2/Modules/./socketmodule.c:1583: undefined reference to `getservbyname' /s1/sqa/edwardt/Python/Python-1.5.2/libpython1.5.a(socketmodule.o): In function `PySocket_getprotobyname': /s1/sqa/poonam/python/Python-1.5.2/Modules/./socketmodule.c:1617: undefined reference to `getprotobyname' /s1/sqa/edwardt/Python/Python-1.5.2/libpython1.5.a(socketmodule.o): In function `PySocket_socket': /s1/sqa/poonam/python/Python-1.5.2/Modules/./socketmodule.c:1651: undefined reference to `socket' configure: failed program was: #line 2032 "configure" #include "confdefs.h" /* Override any gcc2 internal prototype to avoid an error. */ /* We use char because int might match the return type of a gcc2 builtin and then its argument prototype would still apply. */ char PyObject_GetAttr(); int main() { PyObject_GetAttr() ; return 0; } configure:2066: checking for PyObject_GetAttr in -lpython1.5 __________________________________________________ Do You Yahoo!? Bid and sell for free at http://auctions.yahoo.com From Alexandre Passos" This is a multi-part message in MIME format. ------=_NextPart_000_000E_01BF09E1.BB1B8DE0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable I know vary well that python=B4s got for and while loops. I=B4d like to = know if python=B4s got the following loops: -Do-Until (until) -Goto, jump Mail soon the answers ------=_NextPart_000_000E_01BF09E1.BB1B8DE0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
I know vary well that python´s = got for and=20 while loops. I´d like to know if python´s got the following=20 loops:
-Do-Until (until)
-Goto, jump
Mail soon the = answers
------=_NextPart_000_000E_01BF09E1.BB1B8DE0-- From deirdre@deirdre.net Tue Sep 28 22:51:08 1999 From: deirdre@deirdre.net (Deirdre Saoirse) Date: Tue, 28 Sep 1999 14:51:08 -0700 (PDT) Subject: [Tutor] Loops In-Reply-To: <002101bf09fb$45dcc200$615bdfc8@the-user> Message-ID: On Tue, 28 Sep 1999, Alexandre Passos wrote: > I know vary well that python´s got for and while loops. I´d like to know if python´s got the following loops: > -Do-Until (until) There's no real need for a do-until with a while loop. It's a redundant form. > -Goto, jump No, thank goodness. It's considered bad design. It was really only necessary in languages that didn't have exceptions or subroutines. Since python has both it's not. for example: try: one thing another thing a third thing a fourth thing except: error handling is the equivalent of: if (! one_thing()) goto error; (several other similar statements) error: (do error handling) -- _Deirdre * http://www.linuxcabal.net * http://www.deirdre.net "I must say that I was really happy to see _Linux for Dummies_ -- that's when you know you've arrived." -- Linus Torvalds From joe@strout.net Tue Sep 28 23:00:11 1999 From: joe@strout.net (Joseph J. Strout) Date: Tue, 28 Sep 1999 15:00:11 -0700 Subject: [Tutor] Loops In-Reply-To: <002101bf09fb$45dcc200$615bdfc8@the-user> References: <002101bf09fb$45dcc200$615bdfc8@the-user> Message-ID: At 6:46 PM -0300 09/28/99, Alexandre Passos wrote: >I know vary well that python´s got for and while loops. I´d like to >know if python´s got the following loops: >-Do-Until (until) Nope. Instead of... do: foo(bar) until bar==42 (which isn't legal), try this... while 1: foo(bar) if bar==42: break >-Goto, jump Goodness no! These are Evil, and Python is Good. Cheers, -- Joe ,------------------------------------------------------------------. | Joseph J. Strout Biocomputing -- The Salk Institute | | joe@strout.net http://www.strout.net | `------------------------------------------------------------------' From matt@stary.zoomedia.com Wed Sep 29 20:26:57 1999 From: matt@stary.zoomedia.com (Matt Dunford) Date: Wed, 29 Sep 1999 12:26:57 -0700 (PDT) Subject: [Tutor] Loops In-Reply-To: <002101bf09fb$45dcc200$615bdfc8@the-user> Message-ID: On Tue, 28 Sep 1999, Alexandre Passos wrote: > I know vary well that python´s got for and while loops. I´d like to know if python´s got the following loops: > -Do-Until (until) for a do-until loop, do something like this. while 1: # do something if (until_var == what_it_should): break From skip@mojam.com (Skip Montanaro) Thu Sep 30 17:17:40 1999 From: skip@mojam.com (Skip Montanaro) (Skip Montanaro) Date: Thu, 30 Sep 1999 11:17:40 -0500 (CDT) Subject: [Tutor] Re: [Python-Help] ExpectPy Installation problem --- problem restated. In-Reply-To: <19990928182816.4618.rocketmail@web218.mail.yahoo.com> References: <19990928182816.4618.rocketmail@web218.mail.yahoo.com> Message-ID: <14323.36132.852507.748722@dolphin.mojam.com> >>>>> "ET" == ET writes: ... ET> function `exp_spawnv': ET> /net/wrk/expect-5.26/exp_clib.c:282: undefined ET> reference to `Tcl_ErrnoMsg' ET> /net/wrk/expect-5.26/exp_clib.c:296: undefined ET> reference to `Tcl_ErrnoMsg' ET> /net/wrk/expect-5.26/exp_clib.c:369: undefined ET> reference to `Tcl_ErrnoMsg' ET> /net/wrk/expect-5.26/exp_clib.c:497: undefined ET> reference to `Tcl_ErrnoMsg' ... Looks like you're not telling configure that it should link with some Tcl libraries. ... ET> In function ET> `PySocketSock_send': ET> /s1/sqa/poonam/python/Python-1.5.2/Modules/./socketmodule.c:1167: ET> undefined ET> reference to `send' ET> /s1/sqa/edwardt/Python/Python-1.5.2/libpython1.5.a(socketmodule.o): ET> In function ET> `PySocketSock_sendto': ET> /s1/sqa/poonam/python/Python-1.5.2/Modules/./socketmodule.c:1199: ET> undefined ET> reference to `sendto' ... Here it looks like AIX puts the socket functions in a separate library. Check around for something like libsocket.a or search the libraries in /usr/lib for the symbols send and/or sendto: for f in /usr/lib/lib* ; do echo $f nm -a $f | egrep sendto done Again, it would appear this library needs to be fed to configure. Skip Montanaro | http://www.mojam.com/ skip@mojam.com | http://www.musi-cal.com/ 847-971-7098 | Python: Programming the way Guido indented... From teroc@zianet.com Thu Sep 30 18:00:41 1999 From: teroc@zianet.com (K P) Date: Thu, 30 Sep 1999 12:00:41 -0500 Subject: [Tutor] Ok, take one step back and let you look Message-ID: <16554262512929@zianet.com> --Message-Boundary-31826 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Content-description: Mail message body Just a little frustrated here, because I can't seem to make the connection on this little project: a basic inventory tracking system. Maybe a little too much, but hey, it's rather fun. Here's my problem: how do I make x number of objects (that is x number of different object instances, not x number of the same object instance) appear once in the inventory, with x number of items? I can do it with a single instance, amke it appear multiple times, but when I try it with different instances (but the same 'variables'), I can't seem to code it. Please could someone give me a suggestion? Not a solution, please. maybe a hint on what I need to do. Please teach me, don't lead me. Anyway, included is a copy of my code so you can laugh. yes I probably mangled all the technical terms, oh well, someday I'll get the straight. Ken --Message-Boundary-31826 Content-type: text/plain; charset=US-ASCII Content-disposition: inline Content-description: Attachment information. The following section of this message contains a file attachment prepared for transmission using the Internet MIME message format. If you are using Pegasus Mail, or any another MIME-compliant system, you should be able to save it or view it from within your mailer. If you cannot, please ask your system administrator for assistance. ---- File information ----------- File: inven.py Date: 30 Sep 1999, 11:59 Size: 7100 bytes. 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JSAoaXRlbS5uYW1lLCBzZWxmLnF0eXNbaXRlbV0sIGl0ZW0ud2VpZ2h0LCBpdGVtLnZvbHVt ZSwgc2VsZi53ZWlnaHRzW2l0ZW1dLCBzZWxmLmN1YmVzW2l0ZW1dKQ0KICAgICAgcHJpbnQg IlRvdGFsIFdlaWdodDogIiwgc2VsZi5jb250ZW50V2VpZ2h0LCAiXHRUb3RhbCBWb2x1bWU6 ICIsIHNlbGYuY29udGVudFZvbHVtZQ0KDQo= --Message-Boundary-31826-- From joe@strout.net Thu Sep 30 18:20:42 1999 From: joe@strout.net (Joseph J. Strout) Date: Thu, 30 Sep 1999 10:20:42 -0700 Subject: [Tutor] Ok, take one step back and let you look In-Reply-To: <16554262512929@zianet.com> References: <16554262512929@zianet.com> Message-ID: At 12:00 PM -0500 09/30/99, K P wrote: >problem: how do I make x number of objects (that is x number of >different object instances, not x number of the same object >instance) appear once in the inventory, with x number of items? I don't quite understand your question -- and I confess I haven't looked at the code. But there are lots of ways to create many objects: objects = [] for i in range(x): objects.append(MyClass()) or, less clearly but more succinctly: objects = map(lambda i:MyClass(), range(x)) Hope this helps! -- Joe ,------------------------------------------------------------------. | Joseph J. Strout Biocomputing -- The Salk Institute | | joe@strout.net http://www.strout.net | `------------------------------------------------------------------' From warren@nightwares.com Thu Sep 30 19:04:17 1999 From: warren@nightwares.com (Warren 'The Howdy Man' Ockrassa) Date: Thu, 30 Sep 1999 13:04:17 -0500 Subject: [Tutor] Ok, take one step back and let you look References: <16554262512929@zianet.com> Message-ID: <37F3A621.A579C43@nightwares.com> K P wrote: > Anyway, included is a copy of my code so you can laugh. You know, I'm on this list to learn python as well, but I'm not new to lists in general, and I know that it is ALWAYS a violation of etiquette to send attachments to listservs. Please remember that in the future. --WthmO From arcege@shore.net Thu Sep 30 20:40:03 1999 From: arcege@shore.net (Michael P. Reilly) Date: Thu, 30 Sep 1999 15:40:03 -0400 (EDT) Subject: [Tutor] Ok, take one step back and let you look In-Reply-To: <16554262512929@zianet.com> from K P at "Sep 30, 99 12:00:41 pm" Message-ID: <199909301940.PAA07497@northshore.shore.net> > Just a little frustrated here, because I can't seem to make the > connection on this little project: a basic inventory tracking system. > Maybe a little too much, but hey, it's rather fun. Here's my > problem: how do I make x number of objects (that is x number of > different object instances, not x number of the same object > instance) appear once in the inventory, with x number of items? I > can do it with a single instance, amke it appear multiple times, but > when I try it with different instances (but the same 'variables'), I > can't seem to code it. > Please could someone give me a suggestion? Not a solution, > please. maybe a hint on what I need to do. Please teach me, don't > lead me. > Anyway, included is a copy of my code so you can laugh. yes I > probably mangled all the technical terms, oh well, someday I'll get > the straight. It sounds like you want some form of "semaphore" when creating class instances: a certain number of instances of that class can be created, but beyond that the semaphore "blocks" (raises an exception in this case). Here is a mix-in you can look at and see how to work into your code. class InstanceLimiter: class InstanceLimiterError(Exception): pass _Instance_Limiter_count = 10 def new_instance(self): klass = self.__class__ if klass._Instance_Limiter_count > 0: klass._Instance_Limiter_count = klass._Instance_Limiter_count - 1 else: raise self.InstanceLimiterError, \ 'too many instances of %s' % klass.__name__ def remove_instance(self): klass = self.__class__ klass._Instance_Limiter_count = klass._Instance_Limiter_count + 1 Then you can work it into a class like: class Person(InstanceLimiter): """A person under population control.""" _Instance_Limiter_count = 1000 def __init__(self, name, location, birthdate): self.new_instance() ... def __del__(self): self.remove_instance() ... Now only one thousand instances of Person can exist. I'm not sure if this is what you want, if not maybe you can use the techniques in other places. -Arcege -- ------------------------------------------------------------------------ | Michael P. Reilly, Release Engineer | Email: arcege@shore.net | | Salem, Mass. USA 01970 | | ------------------------------------------------------------------------ From teroc@zianet.com Thu Sep 30 21:02:43 1999 From: teroc@zianet.com (K P) Date: Thu, 30 Sep 1999 15:02:43 -0500 Subject: [Tutor] Ok, take one step back and let you look In-Reply-To: <37F3A621.A579C43@nightwares.com> Message-ID: <19574037535478@zianet.com> Whoops, next time I'll stick it inline. Sorry about that. Ken On 30 Sep 99, at 13:04, Warren 'The Howdy Man' Ockras wrote: > K P wrote: > > > Anyway, included is a copy of my code so you can laugh. > > You know, I'm on this list to learn python as well, but I'm not new to > lists in general, and I know that it is ALWAYS a violation of etiquette > to send attachments to listservs. > > Please remember that in the future. > > --WthmO > > _______________________________________________ > Tutor maillist - Tutor@python.org > http://www.python.org/mailman/listinfo/tutor From teroc@zianet.com Thu Sep 30 21:12:49 1999 From: teroc@zianet.com (K P) Date: Thu, 30 Sep 1999 15:12:49 -0500 Subject: [Tutor] Ok, take one step back and let you look In-Reply-To: <199909301940.PAA07497@northshore.shore.net> References: <16554262512929@zianet.com> from K P at "Sep 30, 99 12:00:41 pm" Message-ID: <20074596836699@zianet.com> Hmmm, I can see the possiblities in other areas. Thanks for the 'snippet'. Maybe a small example would refine what I am seeking: Quick example: 3 books: red, blue, green. All instances of class Book. 3 glasses: yellow, purple, aqua, all instances of class Glassware. In my inventory, I would like them to appear thus: Item Qty Book 3 Glass 3 Not like this, which is currently the case: Item Qty Blue 1 Green 1 Red 1 yellow 1 purple 1 aqua 1 I'm not too concerned with having tons of instances of a particular class/object. Just how they would be tracked in the inventory, and also displayed(on screen). If I am still not being very clear with this, I shall try harder to clarify myself :) Ken [big snip] > > It sounds like you want some form of "semaphore" when creating class > instances: a certain number of instances of that class can be > created, but beyond that the semaphore "blocks" (raises an exception > in this case). Here is a mix-in you can look at and see how to work > into your code. > > class InstanceLimiter: > class InstanceLimiterError(Exception): > pass > _Instance_Limiter_count = 10 > def new_instance(self): > klass = self.__class__ > if klass._Instance_Limiter_count > 0: > klass._Instance_Limiter_count = klass._Instance_Limiter_count - 1 > else: > raise self.InstanceLimiterError, \ > 'too many instances of %s' % klass.__name__ > def remove_instance(self): > klass = self.__class__ > klass._Instance_Limiter_count = klass._Instance_Limiter_count + 1 > > Then you can work it into a class like: > > class Person(InstanceLimiter): > """A person under population control.""" > _Instance_Limiter_count = 1000 > def __init__(self, name, location, birthdate): > self.new_instance() > ... > def __del__(self): > self.remove_instance() > ... > > Now only one thousand instances of Person can exist. > > I'm not sure if this is what you want, if not maybe you can use the > techniques in other places. > > -Arcege > > > -- > ------------------------------------------------------------------------ > | Michael P. Reilly, Release Engineer | Email: arcege@shore.net | > | Salem, Mass. USA 01970 | | > ------------------------------------------------------------------------ > > _______________________________________________ > Tutor maillist - Tutor@python.org > http://www.python.org/mailman/listinfo/tutor From joe@strout.net Thu Sep 30 21:31:15 1999 From: joe@strout.net (Joseph J. Strout) Date: Thu, 30 Sep 1999 13:31:15 -0700 Subject: [Tutor] Ok, take one step back and let you look In-Reply-To: <20074596836699@zianet.com> References: <16554262512929@zianet.com> from K P at "Sep 30, 99 12:00:41 pm" <20074596836699@zianet.com> Message-ID: At 3:12 PM -0500 09/30/99, K P wrote: >Quick example: 3 books: red, blue, green. All instances of class >Book. 3 glasses: yellow, purple, aqua, all instances of class >Glassware. In my inventory, I would like them to appear thus: > >Item Qty >Book 3 >Glass 3 So you just want to find and count the Book instances, say? Followed by the Glassware instances? Let's just do books first. One way to do it is with a loop: books = 0 for item in myInventory: if isInstance(item, Book): books = books+1 Or, you could do it using 'filter'... bookList = filter(lambda i: isInstance(i, Book), myInventory) qtyBooks = len(bookList) The key trick here is the 'isInstance' built-in function. HTH, -- Joe ,------------------------------------------------------------------. | Joseph J. Strout Biocomputing -- The Salk Institute | | joe@strout.net http://www.strout.net | `------------------------------------------------------------------' From arcege@shore.net Thu Sep 30 21:44:06 1999 From: arcege@shore.net (Michael P. Reilly) Date: Thu, 30 Sep 1999 16:44:06 -0400 (EDT) Subject: [Tutor] Ok, take one step back and let you look In-Reply-To: <20074596836699@zianet.com> from K P at "Sep 30, 99 03:12:49 pm" Message-ID: <199909302044.QAA22017@northshore.shore.net> > Hmmm, I can see the possiblities in other areas. Thanks for the > 'snippet'. Maybe a small example would refine what I am seeking: > > Quick example: 3 books: red, blue, green. All instances of class > Book. 3 glasses: yellow, purple, aqua, all instances of class > Glassware. In my inventory, I would like them to appear thus: > > Item Qty > Book 3 > Glass 3 > Not like this, which is currently the case: > > Item Qty > Blue 1 > Green 1 > Red 1 > yellow 1 > purple 1 > aqua 1 > > I'm not too concerned with having tons of instances of a particular > class/object. Just how they would be tracked in the inventory, and > also displayed(on screen). If I am still not being very clear with this, > I shall try harder to clarify myself :) > > Ken I see, you just want to count the instances of classes within a collection (rather than restricting creation). This is a job for.... the vorpal bunny? Nah, just maybe a dictionary. :) >>> classify = {} >>> for item in inventory: ... key = item.__class__ ... if classify.has_key(key): ... classify[key] = classify[key] + 1 ... else: ... classify[key] = 1 ... >>> klasses = classify.keys() >>> klasses.sort(lambda a, b: cmp(a.__name__, b.__name__)) # sort by name >>> for klass in klasses: ... print klass.__name__, classify[klass] ... Book 3 Glass 3 >>> This relies on the facts that just about any hashable object can be a key to a dictionary, and keys in a dictionary are unique. Then you just need to count the number of unique classes in the inventory. If you wanted to base the "uniqueness" on something other than the class, say some other property of each of the items, that can be done too. -Arcege