Mailman 3 September 2009 - Python-Dev

Re: [Python-Dev] PEP 3144 review.
by Eric Smith Sept. 17, 2009

Sept. 17, 2009

Eric. "Greg Ewing" <greg.ewing(a)canterbury.ac.nz> wrote: >Nick Coghlan wrote: > >> Or, to put it another way, given an arbitrary host in a network (e.g. >> your own machine or the default gateway) and the netmask for that >> network, calculate the network address. > >Some people have claimed that the gateway address of a >network isn't necessarily the zero address in that network. >If that's true, then you *can't* calculate the network >address … [View More]

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pthreads, fork, import, and execvp
by Rotem Yaari Sept. 17, 2009

Sept. 17, 2009

Hello everyone! We have been encountering several deadlocks in a threaded Python application which calls subprocess.Popen (i.e. fork()) in some of its threads. This has occurred on Python 2.4.1 on a 2.4.27 Linux kernel. Preliminary analysis of the hang shows that the child process blocks upon entering the execvp function, in which the import_lock is acquired due to the following line: def _ execvpe(file, args, env=None): from errno import ENOENT, ENOTDIR ... It is known that … [View More]

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displayhook behavior in pdb
by Georg Brandl Sept. 16, 2009

Sept. 16, 2009

May I have a short vote on this issue: http://bugs.python.org/issue6903 In short, pdb (since 2.6) uses a separate displayhook in order to avoid _ being reassigned (which screws up debugging apps that use _ as gettext). In that displayhook, I did not add the suppression of printing None, as it can be confusing to look at variables and get no output: (Pdb) foo 1 (Pdb) bar (Pdb) (You could argue that this is what the "p" command is for though.) Now in Python 3, where print is a function, … [View More]

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Python Language Summit #2 in February
by A.M. Kuchling Sept. 16, 2009

Sept. 16, 2009

PyCon 2010 will be February 19-21 2010 in Atlanta, Georgia (US). Van Lindberg, PyCon chair, has approved having another Python Language Summit on Thursday, February 18 2010. The web page for it is <http://us.pycon.org/2010/about/summits/language/> The Python Language Summit is an invitation-only event for developers of Python implementations and the standard library, to discuss issues of common concern to all implementors. It will mostly be organized similarly to last year's event. I'… [View More]

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Numeric alignment issue with PEP 3101
by Eric Smith Sept. 15, 2009

Sept. 15, 2009

The default string formatting alignment for all types, according to PEP 3101, is left aligned. Issue 6857 (http://bugs.python.org/issue6857) points out that for numeric types (int, float, and decimal, at least), the actual implemented default alignment is right aligned. Mark Dickinson and I agree that for numeric types, right alignment makes much more sense as a default. And that's what %-formatting and str.format() both do. I think the PEP should be modified to say that right alignment … [View More]

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FWD: Windows 7 Compatibility
by Aahz Sept. 14, 2009

Sept. 14, 2009

Still no-mail on python-dev, forwarding this because it has a direct e-mail contact for Microsoft at the bottom. ----- Forwarded message from Joanna Cobb <joanna.cobb(a)nichecubed.com> ----- > From: Joanna Cobb <joanna.cobb(a)nichecubed.com> > To: "webmaster(a)python.org" <webmaster(a)python.org> > Date: Mon, 14 Sep 2009 10:05:34 -0400 > Subject: Windows 7 Compatibility > > Regarding: Windows 7 Compatibility for Python Software Foundation - Application: … [View More]Python > > I am trying to contact your company regarding the Microsoft Windows 7 Compatibility Program for Python. I have not been able to get in touch with the person responsible for this application in your company and this is why I am reaching out to you through the Support Team. This application has been identified as one of the applications Microsoft would like to see supported on Windows 7 and I have been tasked by Microsoft to help answer your questions about Windows 7 application compatibility and help you get your application through the Windows 7 "Green Light" compatibility process. > > If your application already supports Windows Vista, chances are it will already be compatible with Windows 7 without the need for any code changes. By pledging support for Windows 7 you're application will automatically be listed in the Windows Application Compatibility seen currently by more than 1 million users per month. The registration is extremely simple and just asks a few key questions. > > Here is the link to Microsoft's ISV Application Compatibility page: http://partner.microsoft.com/isvappcompat. When you have a moment, I would encourage you to visit the site and complete the process to pledge support for your application on Windows 7 by October 22nd 2009 when Windows 7 is officially released. > > In addition if you are able to pledge compatibility you'll receive access to a special Windows 7 Partner Marketing Kit that includes a press release with a Microsoft quote, plus customizable marketing templates including; email templates, postcards, web banners, business letter, and copy blocks, all to identify to your customers, or potential customers that your solutions are compatible with Windows 7. > > If you provide me with a phone number where to get in touch with you, I will call you to answer any questions you may have. > > Once you register on the ISV Application Compatibility site, I would appreciate it if you would email me to let me know that you have completed so that I can make a note of it for Microsoft. If you register the application under a different partner or application name please let me know in order to track changes. If there is a new version of the application and there are no plans to support Windows 7 on the older version please register the older version as "No planned Support" on the site as well as the new version with desired Win7 compatibility date. > > Should you have any questions about this email feel free to call me or send an email to my supervisor at v-mafl(a)microsoft.com<mailto:v-mafl@microsoft.com>. > > Best regards, > > Joanna Cobb > Business Development Representative > N(3) > niche cubed > Office: 800.508.4291 Ext. 316 > joanna.cobb(a)nichecubed.com<mailto:first.last@nichecubed.com> > www.nichecubed.com<http://www.nichecubed.com> > > Confidentiality note: This e-mail, and any attachment to it, contains privileged and confidential information intended only for the use of the individual(s) or entity named in the e-mail. If the reader of the e-mail is not the intended recipient, or the employee or agent responsible for delivering it to the intended recipient, you are hereby notified that reading it is strictly prohibited. If you have received this e-mail in error, please immediately return it to the sender and delete it from your system. Thank you. > ----- End forwarded message ----- -- Aahz (aahz(a)pythoncraft.com) <*> http://www.pythoncraft.com/ "It's 106 miles to Chicago. We have a full tank of gas, a half-pack of cigarettes, it's dark, and we're wearing sunglasses." "Hit it." [View Less]

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clarification on PEP 3124 status
by Darren Dale Sept. 14, 2009

Sept. 14, 2009

Could somebody please clarify the status of PEP 3124? At http://ftp.python.org/dev/peps/ , it is listed as "under consideration", but http://ftp.python.org/dev/peps/pep-3124/ says it has been deferred. I was reading through the discussion on the python-3000 mailing list archive, and at one point somebody asked for other examples where generic functions are used in the community. The numpy project has a basic generic function mechanism for numpy's ufuncs (regular functions that operate on … [View More]

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Anyone knows how to compile pywin32 for 64bit operating system
by Jacky Lam Sept. 12, 2009

Sept. 12, 2009

I would like to compile a 64 bit version of pywin. I am currently using MingGW for that, but I fail to do so. Does anyone know how to compile pywin32 for 64bit operating system? In addition, any examples for that? Thanks. Jacky

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Re: [Python-Dev] About Python
by Michael Foord Sept. 12, 2009

Sept. 12, 2009

Kalite LAB. wrote: > Dear authorized, > I have a question about Python programming language can help you glad > you do. User as a decimal point "." Instead of character "," we can > use that character? For example, 10.7 instead of 10,7 This mailing list is for the development of Python, not development with Python. For general questions about how to do things the python-list (comp.lang.python.newsgroup) and python-tutor-list are appropriate places to ask. That aside I *… [View More]

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M.L.S.(Multiple Language Support) in Core-Compiler
by R. Müller Sept. 12, 2009

Sept. 12, 2009

How to adapt the existing M.L.S. from Compilermessages to Core-Compiler-Words. Where to begin, for implemantation of this feature?

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Summary of Python tracker Issues
by Python tracker Sept. 11, 2009

Sept. 11, 2009

ACTIVITY SUMMARY (09/04/09 - 09/11/09) Python tracker at http://bugs.python.org/ To view or respond to any of the issues listed below, click on the issue number. Do NOT respond to this message. 2394 open (+32) / 16312 closed (+15) / 18706 total (+47) Open issues with patches: 950 Average duration of open issues: 660 days. Median duration of open issues: 416 days. Open Issues Breakdown open 2361 (+32) pending 32 ( +0) Issues Created Or Reopened (48) … [View More]

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About Python
by Kalite LAB. Sept. 11, 2009

Sept. 11, 2009

Dear authorized, I have a question about Python programming language can help you glad you do. User as a decimal point "." Instead of character "," we can use that character? For example, 10.7 instead of 10,7 Thanks in advance ... Best Regards... Feyyaz OZEN

1 0

Controlling the cipher list for SSL connections
by Chris Frantz Sept. 11, 2009

Sept. 11, 2009

Greetings, I would like to be able to set the cipher list when creating an SSL connection. It appears that the current SSL module doesn't provide this functionality. The attached patch (against trunk) adds this ability to SSLSocket. Thank you, --Chris PS: Please reply directly to me, as I'm not subscribed to this list. Index: Python-2.7/Lib/ssl.py =================================================================== --- Python-2.7/Lib/ssl.py (revision 74703) +++ … [View More]Python-2.7/Lib/ssl.py (working copy) @@ -88,7 +88,7 @@ server_side=False, cert_reqs=CERT_NONE, ssl_version=PROTOCOL_SSLv23, ca_certs=None, do_handshake_on_connect=True, - suppress_ragged_eofs=True): + suppress_ragged_eofs=True, cipher_list=None): socket.__init__(self, _sock=sock._sock) # the initializer for socket trashes the methods (tsk, tsk), so... self.send = lambda data, flags=0: SSLSocket.send(self, data, flags) @@ -110,7 +110,8 @@ # yes, create the SSL object self._sslobj = _ssl.sslwrap(self._sock, server_side, keyfile, certfile, - cert_reqs, ssl_version, ca_certs) + cert_reqs, ssl_version, + ca_certs, cipher_list) if do_handshake_on_connect: timeout = self.gettimeout() try: Index: Python-2.7/Modules/_ssl.c =================================================================== --- Python-2.7/Modules/_ssl.c (revision 74703) +++ Python-2.7/Modules/_ssl.c (working copy) @@ -261,7 +261,8 @@ enum py_ssl_server_or_client socket_type, enum py_ssl_cert_requirements certreq, enum py_ssl_version proto_version, - char *cacerts_file) + char *cacerts_file, + char *cipher_list) { PySSLObject *self; char *errstr = NULL; @@ -366,6 +367,9 @@ SSL_CTX_set_verify(self->ctx, verification_mode, NULL); /* set verify lvl */ + if (cipher_list) + SSL_CTX_set_cipher_list(self->ctx, cipher_list); + PySSL_BEGIN_ALLOW_THREADS self->ssl = SSL_new(self->ctx); /* New ssl struct */ PySSL_END_ALLOW_THREADS @@ -407,14 +411,17 @@ char *key_file = NULL; char *cert_file = NULL; char *cacerts_file = NULL; + char *cipher_list = NULL; - if (!PyArg_ParseTuple(args, "O!i|zziiz:sslwrap", + + if (!PyArg_ParseTuple(args, "O!i|zziizz:sslwrap", PySocketModule.Sock_Type, &Sock, &server_side, &key_file, &cert_file, &verification_mode, &protocol, - &cacerts_file)) + &cacerts_file, + &cipher_list)) return NULL; /* @@ -427,12 +434,12 @@ return (PyObject *) newPySSLObject(Sock, key_file, cert_file, server_side, verification_mode, - protocol, cacerts_file); + protocol, cacerts_file, cipher_list); } PyDoc_STRVAR(ssl_doc, "sslwrap(socket, server_side, [keyfile, certfile, certs_mode, protocol,\n" -" cacertsfile]) -> sslobject"); +" cacertsfile, cipherlist]) -> sslobject"); /* SSL object methods */ [View Less]

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FWD: Front Runner Program
by Aahz Sept. 11, 2009

Sept. 11, 2009

I'm still no-mail on python-dev, forwarding as FYI ----- Forwarded message from Eric Albrecht <eric.albrecht(a)Nichecubed.com> ----- From: Eric Albrecht <eric.albrecht(a)Nichecubed.com> To: "webmaster(a)python.org" <webmaster(a)python.org> Date: Thu, 10 Sep 2009 10:48:11 -0400 Subject: Front Runner Program Regarding: Windows 7 Compatibility for Python Application. I am trying to contact your company regarding the Microsoft Windows 7 Compatibility Program for the … [View More]application above. I have not been able to get in touch with the person responsible for this application in your company and this is why I am reaching out to you through the Support Team. This application has been identified as one of the applications Microsoft would like to see supported on Windows 7 and I have been tasked by Microsoft to help answer your questions about Windows 7 application compatibility and help you get your application through the Windows 7 "Green Light" compatibility process. If your application already supports Windows Vista, chances are it will already be compatible with Windows 7 without the need for any code changes. By pledging support for Windows 7 you're application will automatically be listed in the Windows Application Compatibility seen currently by more than 1 million users per month. The registration is extremely simple and just asks a few key questions. Here is the link to Microsoft's ISV Application Compatibility page: www.isvappcompat.com<http://www.isvappcompat.com/> . When you have a moment, I would encourage you to visit the site and complete the process to pledge support for your application on Windows 7 by October 22nd 2009 when Windows 7 is officially released. In addition if you are able to pledge compatibility you'll receive access to a special Windows 7 Partner Marketing Kit that includes a press release with a Microsoft quote, plus customizable marketing templates including; email templates, postcards, web banners, business letter, and copy blocks, all to identify to your customers, or potential customers that your solutions are compatible with Windows 7. If you provide me with a phone number where to get in touch with you, I will call you to answer any questions you may have. Once you register on the ISV Application Compatibility site, I would appreciate it if email me to let me know that you have completed so that I can make a note of it for Microsoft. If you register the application under a different partner or application name please let me know in order to track changes. If there is a new version of the application and there are no plans to support Windows 7 on the older version please register the older version as "No planned Support" on the site as well as the new version with desired Win7 compatibility date. Should you have any questions about this email feel free to call me or send an email to my supervisor at v-mafl(a)microsoft.com<mailto:v-mafl@microsoft.com>. Best regards, Eric Albrecht 800-508-4291 EXT: 309 eric.albrecht(a)nichecubed.com<mailto:eric.albrecht@nichecubed.com> ----- End forwarded message ----- -- Aahz (aahz(a)pythoncraft.com) <*> http://www.pythoncraft.com/ "To me vi is Zen. To use vi is to practice zen. Every command is a koan. Profound to the user, unintelligible to the uninitiated. You discover truth everytime you use it." --reddy(a)lion.austin.ibm.com [View Less]

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PEP 3145
by Eric Pruitt Sept. 9, 2009

Sept. 9, 2009

Hello all, I have been working on adding asynchronous I/O to the Python subprocess module as part of my Google Summer of Code project. Now that I have finished documenting and pruning the code, I present PEP 3145 for its inclusion into the Python core code. Any and all feedback on the PEP (http://www.python.org/dev/peps/pep-3145/) is appreciated. Eric

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Re: [Python-Dev] [Distutils] Static metadata using setup.cfg
by Chris Withers Sept. 8, 2009

Sept. 8, 2009

David Lyon wrote: > On Tue, 08 Sep 2009 09:18:50 +0100, Chris Withers <chris(a)simplistix.co.uk> > wrote: >> <mini rant> >> If Python had a packaging system *and* used it for the standard library, >> then things like this wouldn't be a problem... >> The setup.cfg could just say "requires sqlite greater than version >> x.y.z", and if it was in the standard library, it would be used unless a >> newer version was needed. > > +1 > … [View More]

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compiling python2.5 on linux under wine
by Luke Kenneth Casson Leighton Sept. 8, 2009

Sept. 8, 2009

hey, has anyone investigated compiling python2.5 using winegcc, under wine? i'm presently working my way through it, just for kicks, and was wondering if anyone would like to pitch in or stare at the mess under a microscope. it's not as crazed as it sounds. cross-compiling python2.5 for win32 with mingw32 is an absolute miserable bitch of a job that goes horribly wrong when you actually try to use the minimalist compiler to do any real work. so i figured that it would be easier to get python … [View More]compiled using wine. i _have_ got some success - a python script and a python.exe.so (which is winegcc's friendly way of telling you you have something that stands a chance of working) as well as a libpython25.dll.so. what i _don't_ yet have is an _md5.dll (or should it be _md5.lib?) i.e. the standard modules are a bit... iffy. the _winreg.o is compiled; the _md5.o is compiled; the winreg.lib is not. whoops. plus, it's necessary to enable nt_dl.c which is in PC/ _not_ in Modules/. one of the key issues that's a bit of a bitch is that python is compiled up for win32 with a hard-coded pyconfig.h which someone went to a _lot_ of trouble to create by hand instead of using autoconf. oh - and it uses visualstudio so there's not even a Makefile. ignoring that for the time-being was what allowed me to get as far as actually having a python interpreter (with no c-based modules). so there's a whole _stack_ of stuff that needs dragging kicking and screaming into the 21st century. there _is_ a reason why i want to do this. actually, there's two. firstly, i sure as shit do _not_ want to buy, download, install _or_ run visual studio. i flat-out refuse to run an MS os and visual studio runs like a dog under wine. secondly, i want a python25.lib which i can use to cross-compile modules for poor windows users _despite_ sticking to my principles and keeping my integrity as a free software developer. thirdly i'd like to cross-compile pywebkitgtk for win32 fourthly i'd like to compile and link applications to the extremely successful and well wicked MSHTML.DLL... in the _wine_ project :) not the one in windows (!) i want to experiment with DOM model manipulation - from python - similar to the OLPC HulaHop project - _but_ i want to compile or cross-compile everything from linux, not windows (see 1 above) fifthly i'd like to see COM (DCOM) working and pywin32 compiled and useable under wine, even if it means having to get a license to use dcom98 and oleauth.lib and oleauth.h etc. and all the developer files needed to link DCOM applications under windows. actually what i'd _really_ like to see is FreeDCE's DCOM work actually damn well finished, it's only been eight years since wez committed the first versions of the IDL and header files, and it's only been over fifteen years since microsoft began its world domination using COM and DCOM. ... but that's another story :) so that's ... five reasons not two. if anyone would like to collaborate on a crazed project with someone who can't count, i'm happy to make available what i've got up to so far, on github.org. l. [View Less]

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Mercurial migration: help needed
by "Martin v. Löwis" Sept. 6, 2009

Sept. 6, 2009

This is a repost from two weeks ago. It didn't get much feedback last time. I still keep trying, reposting to python-list also this time. In this thread, I'd like to collect things that ought to be done but where Dirkjan has indicated that he would prefer if somebody else did it. Item 1 ------ The first item is build identification. If you want to work on this, please either provide a patch (for trunk and/or py3k), or (if you are a committer) create a subversion branch. It seems that Barry … [View More]

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test failure on py3k branch in test___all__
by Chris Withers Sept. 5, 2009

Sept. 5, 2009

Hi All, Anyone know what's causing this failure? test test___all__ failed -- Traceback (most recent call last): File "Lib/test/test___all__.py", line 106, in test_all self.check_all("profile") File "Lib/test/test___all__.py", line 23, in check_all exec("from %s import *" % modname, names) File "<string>", line 1, in <module> AttributeError: 'module' object has no attribute 'help' cheers, Chris -- Simplistix - Content Management, Batch Processing & Python … [View More]

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Summary of Python tracker Issues
by Python tracker Sept. 4, 2009

Sept. 4, 2009

ACTIVITY SUMMARY (08/28/09 - 09/04/09) Python tracker at http://bugs.python.org/ To view or respond to any of the issues listed below, click on the issue number. Do NOT respond to this message. 2374 open (+24) / 16285 closed (+18) / 18659 total (+42) Open issues with patches: 939 Average duration of open issues: 661 days. Median duration of open issues: 415 days. Open Issues Breakdown open 2341 (+23) pending 32 ( +1) Issues Created Or Reopened (45) … [View More]

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PyMem_Malloc() vs PyObject_Malloc()
by Kristján Valur Jónsson Sept. 4, 2009

Sept. 4, 2009

I noticed something (in 2.5) yesterday, which may be a feature, but is more likely a bug. In tokenizer.c, tok->encoding is allocated using PyMem_MALLOC(). However, this then gets handed to a node->r_str in parsetok.c, and then released in node.c using PyObject_Free(). Now, by coincidence, PyObject_Free() will default to free() for objects that it doesn't recognize, so this works. But is this documented behavior? The reason I ran into this was that I had redirect the PyMem_* API to a … [View More]

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default of returning None hurts performance?
by Gregory P. Smith Sept. 4, 2009

Sept. 4, 2009

food for thought as noticed by a coworker who has been profiling some hot code to optimize a library... If a function does not have a return statement we return None. Ironically this makes the foo2 function below faster than the bar2 function at least as measured using bytecode size: Python 2.6.2 (r262:71600, Jul 24 2009, 17:29:21) [GCC 4.2.2] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import dis >>> def foo(x): ... y = x() ... … [View More]

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OT : Cannot login to PyPI using MyOpenId
by Olemis Lang Sept. 4, 2009

Sept. 4, 2009

I realized that PyPI accepts MyOpenId and tried to login to the site. In the process I get this message : {{{ OpenID provider did not provide your email address }}} I mean, is it mandatory to provide the e-mail address in order to bind a user to an OpenId ? I'm curious : I'd like to know if there's a reason to do that. Thnx in advance ! PS: I know is a little bit OT. Hope you dont mind ... -- Regards, Olemis. Blog ES: http://simelo-es.blogspot.com/ Blog EN: http://simelo-en.blogspot.com/ Featured article:

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REMINDER: PyCon 2010: Call for Proposals
by Aahz Sept. 4, 2009

Sept. 4, 2009

Call for proposals -- PyCon 2010 -- <http://us.pycon.org/2010/> =============================================================== Due date: October 1st, 2009 Want to showcase your skills as a Python Hacker? Want to have hundreds of people see your talk on the subject of your choice? Have some hot button issue you think the community needs to address, or have some package, code or project you simply love talking about? Want to launch your master plan to take over the world with python? … [View More]

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Py_CmpToRich removed, alternatives for comparison?
by Campbell Barton Sept. 3, 2009

Sept. 3, 2009

For blender we have a number of types defined in the C/API like meshes, lamps, metaballs, nurbs etc that dont make sense with some of richcmp's operations. A problem I have is that in python 3.1 the Py_CmpToRich function is removed. Should we copy Py_CmpToRich into our source tree? Otherwise we have fairly long cmp functions that have Py_CmpToRich inline. For C extension writers what is the suggested method for comparing types where Py_LT, Py_GT Py_GE etc are not useful? Since people … [View More]

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