Mailman 3 February 2005 - Python-checkins

python/dist/src/Doc/lib libdis.tex,1.43,1.44
by rhettinger＠users.sourceforge.net Feb. 23, 2005

Feb. 23, 2005

Update of /cvsroot/python/python/dist/src/Doc/lib In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv5815 Modified Files: libdis.tex Log Message: Update an example to match current output. Index: libdis.tex =================================================================== RCS file: /cvsroot/python/python/dist/src/Doc/lib/libdis.tex,v retrieving revision 1.43 retrieving revision 1.44 diff -u -d -r1.43 -r1.44 --- libdis.tex 21 Feb 2005 20:28:07 -0000 1.43 +++ libdis.tex 23 Feb 2005 20:40:42 -0000 1.44 @@ -26,9 +26,7 @@ 2 0 LOAD_GLOBAL 0 (len) 3 LOAD_FAST 0 (alist) 6 CALL_FUNCTION 1 - 9 RETURN_VALUE - 10 LOAD_CONST 0 (None) - 13 RETURN_VALUE + 9 RETURN_VALUE \end{verbatim} (The ``2'' is a line number).

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python/dist/src/Python compile.c,2.346,2.347
by rhettinger＠users.sourceforge.net Feb. 23, 2005

Feb. 23, 2005

Update of /cvsroot/python/python/dist/src/Python In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv25613 Modified Files: compile.c Log Message: Preserve sign of -0.0 when result is run through marshal. Index: compile.c =================================================================== RCS file: /cvsroot/python/python/dist/src/Python/compile.c,v retrieving revision 2.346 retrieving revision 2.347 diff -u -d -r2.346 -r2.347 --- compile.c 21 Feb 2005 20:03:14 -0000 2.346 +++ compile.c 23 Feb 2005 13:37:55 -0000 2.347 @@ -545,7 +545,7 @@ static int fold_unaryops_on_constants(unsigned char *codestr, PyObject *consts) { - PyObject *newconst, *v; + PyObject *newconst=NULL, *v; int len_consts, opcode; /* Pre-conditions */ @@ -557,7 +557,9 @@ opcode = codestr[3]; switch (opcode) { case UNARY_NEGATIVE: - newconst = PyNumber_Negative(v); + /* Preserve the sign of -0.0 */ + if (PyObject_IsTrue(v) == 1) + newconst = PyNumber_Negative(v); break; case UNARY_CONVERT: newconst = PyObject_Repr(v);

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python/dist/src README,1.186,1.187
by mwh＠users.sourceforge.net Feb. 22, 2005

Feb. 22, 2005

Update of /cvsroot/python/python/dist/src In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv27945 Modified Files: README Log Message: A few random updates to make things less horrifyingly out of date. Delete some advice that can never, ever have worked. There are a couple of XXX comments for bits I don't know how to update. It would be really good not to release Python 2.5 with these in place :) This file is way too big. There's basically no chance of it staying up to date. Index: README =================================================================== RCS file: /cvsroot/python/python/dist/src/README,v retrieving revision 1.186 retrieving revision 1.187 diff -u -d -r1.186 -r1.187 --- README 25 Jan 2005 12:40:00 -0000 1.186 +++ README 22 Feb 2005 15:33:26 -0000 1.187 @@ -35,6 +35,7 @@ See the file "Misc/NEWS". + If you don't read instructions ------------------------------ @@ -45,30 +46,29 @@ executable "./python"; to install in /usr/local, first do "su root" and then "make install". -The section `Build instructions' below is still recommended reading, -especially the part on customizing Modules/Setup. +The section `Build instructions' below is still recommended reading. What is Python anyway? ---------------------- -Python is an interpreted object-oriented programming language suitable -(amongst other uses) for distributed application development, -scripting, numeric computing and system testing. Python is often -compared to Tcl, Perl, Java, JavaScript, Visual Basic or Scheme. To -find out more about what Python can do for you, point your browser to -http://www.python.org/. +Python is an interpreted, interactive object-oriented programming +language suitable (amongst other uses) for distributed application +development, scripting, numeric computing and system testing. Python +is often compared to Tcl, Perl, Java, JavaScript, Visual Basic or +Scheme. To find out more about what Python can do for you, point your +browser to http://www.python.org/. How do I learn Python? ---------------------- The official tutorial is still a good place to start; see -http://www.python.org/doc/ for online and downloadable versions, as -well as a list of other introductions, and reference documentation. +http://docs.python.org/ for online and downloadable versions, as well +as a list of other introductions, and reference documentation. There's a quickly growing set of books on Python. See -http://www.python.org/cgi-bin/moinmoin/PythonBooks for a list. +www.python.org/moin/PythonBooks for a list. Documentation @@ -82,16 +82,17 @@ and functions! All documentation is also available online at the Python web site -(http://www.python.org/doc/, see below). It is available online for +(http://docs.python.org/, see below). It is available online for occasional reference, or can be downloaded in many formats for faster access. The documentation is available in HTML, PostScript, PDF, and LaTeX formats; the LaTeX version is primarily for documentation authors, translators, and people with special formatting requirements. -The best documentation for the new (in Python 2.2) type/class -unification features is Guido's tutorial introduction, at +Unfortunately, new-style classes (new in Python 2.2) have not yet been +integrated into Python's standard documention. A collection of +pointers to what has been written is at: - http://www.python.org/2.2.1/descrintro.html + http://www.python.org/doc/newstyle.html Web sites @@ -110,12 +111,12 @@ Read comp.lang.python, a high-volume discussion newsgroup about Python, or comp.lang.python.announce, a low-volume moderated newsgroup for Python-related announcements. These are also accessible as -mailing lists: see http://www.python.org/psa/MailingLists.html for an -overview of the many Python-related mailing lists. +mailing lists: see http://www.python.org/community/lists.html for an +overview of these and many other Python-related mailing lists. Archives are accessible via the Google Groups usenet archive; see http://groups.google.com/. The mailing lists are also archived, see -http://www.python.org/psa/MailingLists.html for details. +http://www.python.org/community/lists.html for details. Bug reports @@ -135,7 +136,7 @@ If you have a proposal to change Python, it's best to submit a Python Enhancement Proposal (PEP) first. All current PEPs, as well as guidelines for submitting a new PEP, are listed at -http://python.sourceforge.net/peps/. +http://www.python.org/peps/. Questions @@ -189,10 +190,9 @@ See also the platform specific notes in the next section. -If you run into other trouble, see section 3 of the FAQ -(http://www.python.org/cgi-bin/faqw.py or -http://www.python.org/doc/FAQ.html) for hints on what can go wrong, -and how to fix it. +If you run into other trouble, see the FAQ +(http://www.python.org/doc/faq) for hints on what can go wrong, and +how to fix it. If you rerun the configure script with different options, remove all object files by running "make clean" before rebuilding. Believe it or @@ -200,8 +200,7 @@ problems as well. Try it before sending in a bug report! If the configure script fails or doesn't seem to find things that -should be there, inspect the config.log file. When you fix a -configure problem, be sure to remove config.cache! +should be there, inspect the config.log file. If you get a warning for every file about the -Olimit option being no longer supported, you can ignore it. There's no foolproof way to know @@ -227,8 +226,10 @@ Unsupported systems ------------------- +XXX This section is out of date! + A number of features are not supported in Python 2.3 anymore. Some -support code is still present, but will be removed in Python 2.4. +support code is still present, but will be removed in Python 2.4. If you still need to use current Python versions on these systems, please send a message to python-dev(a)python.org indicating that you volunteer to support this system. @@ -263,12 +264,9 @@ bsddb185 bsddbmodule.c should work. (You may need to add -I, -L or -l flags to direct the - compiler and linker to your include files and libraries.) You can - then force it to be the version people import by adding - - import bsddb185 as bsddb + compiler and linker to your include files and libraries.) - in sitecustomize.py. +XXX I think this next bit is out of date: 64-bit platforms: The modules audioop, imageop and rgbimg don't work. The setup.py script disables them on 64-bit installations. @@ -295,8 +293,8 @@ When the dynamic loader complains about errors finding shared libraries, such as - ld.so.1: ./python: fatal: libstdc++.so.5: open failed: - No such file or directory + ld.so.1: ./python: fatal: libstdc++.so.5: open failed: + No such file or directory you need to first make sure that the library is available on your system. Then, you need to instruct the dynamic loader how @@ -314,13 +312,9 @@ solves the problem. This causes the popen2 test to fail; problem and solution reported by Pablo Bleyer. - Under Linux systems using GNU libc 2 (aka libc6), the crypt - module now needs the -lcrypt option. The setup.py script - takes care of this automatically. - Red Hat Linux: Red Hat 9 built Python2.2 in UCS-4 mode and hacked Tcl to support it. To compile Python2.3 with Tkinter, you will - need to pass --enable-unicode=ucs4 flag to ./configure. + need to pass --enable-unicode=ucs4 flag to ./configure. There's an executable /usr/bin/python which is Python 1.5.2 on most older Red Hat installations; several key Red Hat tools @@ -367,13 +361,13 @@ OPT variable in the top-level Makefile; reported by Pat Knight, this seems to make a difference (at least for HP-UX 10.20) even though pyconfig.h defines it. This seems unnecessary when - using HP/UX 11 and later - threading seems to work "out of the + using HP/UX 11 and later - threading seems to work "out of the box". -HP-UX ia64: When building on the ia64 (Itanium) platform using HP's - compiler, some experience has shown that the compiler's - optimiser produces a completely broken version of python - (see http://www.python.org/sf/814976). To work around this, +HP-UX ia64: When building on the ia64 (Itanium) platform using HP's + compiler, some experience has shown that the compiler's + optimiser produces a completely broken version of python + (see http://www.python.org/sf/814976). To work around this, edit the Makefile and remove -O from the OPT line. HP PA-RISC 2.0: A recent bug report (http://www.python.org/sf/546117) @@ -541,7 +535,7 @@ do "sudo make install" which installs everything as superuser, as this may later cause problems when installing distutils-based additions. - + Some people have reported problems building Python after using "fink" to install additional unix software. Disabling fink (remove all references to /sw from your .profile or .login) should solve this. @@ -552,7 +546,7 @@ /Library/Frameworks). A framework install is probably needed if you want to use any Aqua-based GUI toolkit (whether Tkinter, wxPython, Carbon, Cocoa or anything else). - + See Mac/OSX/README for more information on framework builds. Cygwin: With recent (relative to the time of writing, 2001-12-19) @@ -767,9 +761,9 @@ --------------------------- Starting with Python 2.3, the majority of the interpreter can be built -into a shared library, which can then be used by the interpreter +into a shared library, which can then be used by the interpreter executable, and by applications embedding Python. To enable this feature, -configure with --enable-shared. +configure with --enable-shared. If you enable this feature, the same object files will be used to create a static library. In particular, the static library will contain object @@ -1018,7 +1012,7 @@ --with-pydebug: Enable additional debugging code to help track down memory management problems. This allows printing a list of all live objects when the interpreter terminates. - + --with(out)-universal-newlines: enable reading of text files with foreign newline convention (default: enabled). In other words, any of \r, \n or \r\n is acceptable as end-of-line character. @@ -1028,6 +1022,7 @@ --with-tsc: Profile using the Pentium timestamping counter (TSC). + Building for multiple architectures (using the VPATH feature) ------------------------------------------------------------- @@ -1130,9 +1125,7 @@ For more Tkinter information, see the Tkinter Resource page: http://www.python.org/topics/tkinter/ -There are demos in the Demo/tkinter directory, in the subdirectories -guido, matt and www (the matt and guido subdirectories have been -overhauled to use more recent Tkinter coding conventions). +There are demos in the Demo/tkinter directory. Note that there's a Python module called "Tkinter" (capital T) which lives in Lib/lib-tk/Tkinter.py, and a C module called "_tkinter"

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listas de e-mails por atividade
by Julio Castro Feb. 21, 2005

Feb. 21, 2005

listas de envio de mala-direta, milhões de e-mails para divulgação, lista de email, emails para mala direta segmentada por segmento. Visite agora: http://www.gueb.de/dvgamail Listas para mala direta por e-mail, cadastros de e-mails divididos por atividade, listas de e-mails por atividade, milhões de e-mails para divulgação, lista de email: http://www.gueb.de/dvgamail

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python/dist/src/Doc/lib libdis.tex, 1.41, 1.41.14.1
by rhettinger＠users.sourceforge.net Feb. 21, 2005

Feb. 21, 2005

Update of /cvsroot/python/python/dist/src/Doc/lib In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv20336 Modified Files: Tag: release24-maint libdis.tex Log Message: Document missing opcodes. Index: libdis.tex =================================================================== RCS file: /cvsroot/python/python/dist/src/Doc/lib/libdis.tex,v retrieving revision 1.41 retrieving revision 1.41.14.1 diff -u -d -r1.41 -r1.41.14.1 --- libdis.tex 10 May 2003 08:51:26 -0000 1.41 +++ libdis.tex 21 Feb 2005 20:33:50 -0000 1.41.14.1 @@ -122,6 +122,10 @@ Indicates end-of-code to the compiler, not used by the interpreter. \end{opcodedesc} +\begin{opcodedesc}{NOP}{} +Do nothing code. Used as a placeholder by the bytecode optimizer. +\end{opcodedesc} + \begin{opcodedesc}{POP_TOP}{} Removes the top-of-stack (TOS) item. \end{opcodedesc} @@ -392,6 +396,10 @@ instruction). \end{opcodedesc} +\begin{opcodedesc}{LIST_APPEND}{} +Calls \code{list.append(TOS1, TOS)}. Used to implement list comprehensions. +\end{opcodedesc} + \begin{opcodedesc}{LOAD_LOCALS}{} Pushes a reference to the locals of the current scope on the stack. This is used in the code for a class definition: After the class body

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python/dist/src/Doc/lib libdis.tex,1.42,1.43
by rhettinger＠users.sourceforge.net Feb. 21, 2005

Feb. 21, 2005

Update of /cvsroot/python/python/dist/src/Doc/lib In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv19073 Modified Files: libdis.tex Log Message: Document missing opcodes. Index: libdis.tex =================================================================== RCS file: /cvsroot/python/python/dist/src/Doc/lib/libdis.tex,v retrieving revision 1.42 retrieving revision 1.43 diff -u -d -r1.42 -r1.43 --- libdis.tex 5 Jan 2005 07:19:11 -0000 1.42 +++ libdis.tex 21 Feb 2005 20:28:07 -0000 1.43 @@ -126,6 +126,10 @@ Indicates end-of-code to the compiler, not used by the interpreter. \end{opcodedesc} +\begin{opcodedesc}{NOP}{} +Do nothing code. Used as a placeholder by the bytecode optimizer. +\end{opcodedesc} + \begin{opcodedesc}{POP_TOP}{} Removes the top-of-stack (TOS) item. \end{opcodedesc} @@ -396,6 +400,10 @@ instruction). \end{opcodedesc} +\begin{opcodedesc}{LIST_APPEND}{} +Calls \code{list.append(TOS1, TOS)}. Used to implement list comprehensions. +\end{opcodedesc} + \begin{opcodedesc}{LOAD_LOCALS}{} Pushes a reference to the locals of the current scope on the stack. This is used in the code for a class definition: After the class body

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python/dist/src/Python compile.c,2.345,2.346
by rhettinger＠users.sourceforge.net Feb. 21, 2005

Feb. 21, 2005

Update of /cvsroot/python/python/dist/src/Python In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv12494 Modified Files: compile.c Log Message: Document how the pattern recognizer keeps all of its references in bounds. Add a test in case the underlying assumptions ever change (i.e. the compiler starts generating code blocks that are not punctuated by RETURN_VALUE). Index: compile.c =================================================================== RCS file: /cvsroot/python/python/dist/src/Python/compile.c,v retrieving revision 2.345 retrieving revision 2.346 diff -u -d -r2.345 -r2.346 --- compile.c 20 Feb 2005 12:41:32 -0000 2.345 +++ compile.c 21 Feb 2005 20:03:14 -0000 2.346 @@ -677,6 +677,14 @@ goto exitUnchanged; codestr = memcpy(codestr, PyString_AS_STRING(code), codelen); + /* Verify that RETURN_VALUE terminates the codestring. This allows + the various transformation patterns to look ahead several + instructions without additional checks to make sure they are not + looking beyond the end of the code string. + */ + if (codestr[codelen-1] != RETURN_VALUE) + goto exitUnchanged; + /* Mapping to new jump targets after NOPs are removed */ addrmap = PyMem_Malloc(codelen * sizeof(int)); if (addrmap == NULL)

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python/dist/src/Doc/lib libdecimal.tex,1.24,1.25
by rhettinger＠users.sourceforge.net Feb. 21, 2005

Feb. 21, 2005

Update of /cvsroot/python/python/dist/src/Doc/lib In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv11538 Modified Files: libdecimal.tex Log Message: Fix some wording and grammar nits. Index: libdecimal.tex =================================================================== RCS file: /cvsroot/python/python/dist/src/Doc/lib/libdecimal.tex,v retrieving revision 1.24 retrieving revision 1.25 diff -u -d -r1.24 -r1.25 --- libdecimal.tex 25 Nov 2004 05:35:32 -0000 1.24 +++ libdecimal.tex 21 Feb 2005 15:46:52 -0000 1.25 @@ -84,7 +84,7 @@ \constant{Subnormal}, \constant{Overflow}, and \constant{Underflow}. For each signal there is a flag and a trap enabler. When a signal is -encountered, its flag incremented from zero and, then, if the trap enabler +encountered, its flag is incremented from zero and, then, if the trap enabler is set to one, an exception is raised. Flags are sticky, so the user needs to reset them before monitoring a calculation. @@ -119,7 +119,7 @@ \end{verbatim} -Decimal instances can be constructed from integers, strings or tuples. To +Decimal instances can be constructed from integers, strings, or tuples. To create a Decimal from a \class{float}, first convert it to a string. This serves as an explicit reminder of the details of the conversion (including representation error). Decimal numbers include special values such as @@ -160,7 +160,7 @@ \end{verbatim} -Decimals interact well with much of the rest of python. Here is a small +Decimals interact well with much of the rest of Python. Here is a small decimal floating point flying circus: \begin{verbatim} @@ -741,7 +741,7 @@ \end{classdesc*} \begin{classdesc*}{DecimalException} - Base class for other signals and is a subclass of + Base class for other signals and a subclass of \exception{ArithmeticError}. \end{classdesc*} @@ -847,7 +847,7 @@ \begin{verbatim} # Examples from Seminumerical Algorithms, Section 4.2.2. ->>> from decimal import * +>>> from decimal import Decimal, getcontext >>> getcontext().prec = 8 >>> u, v, w = Decimal(11111113), Decimal(-11111111), Decimal('7.51111111')

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python/dist/src/Lib subprocess.py,1.16,1.17
by astrand＠users.sourceforge.net Feb. 21, 2005

Feb. 21, 2005

Update of /cvsroot/python/python/dist/src/Lib In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv30011 Modified Files: subprocess.py Log Message: Made the module compatible with Python 2.2 again. Index: subprocess.py =================================================================== RCS file: /cvsroot/python/python/dist/src/Lib/subprocess.py,v retrieving revision 1.16 retrieving revision 1.17 diff -u -d -r1.16 -r1.17 --- subprocess.py 14 Feb 2005 08:56:32 -0000 1.16 +++ subprocess.py 21 Feb 2005 08:13:02 -0000 1.17 @@ -2,6 +2,8 @@ # # For more information about this module, see PEP 324. # +# This module should remain compatible with Python 2.2, see PEP 291. +# # Copyright (c) 2003-2004 by Peter Astrand <astrand(a)lysator.liu.se> # # Licensed to PSF under a Contributor Agreement. @@ -374,6 +376,7 @@ mswindows = (sys.platform == "win32") import os +import types import traceback # Exception classes used by this module. @@ -712,7 +715,7 @@ errread, errwrite): """Execute program (MS Windows version)""" - if not isinstance(args, basestring): + if not isinstance(args, types.StringTypes): args = list2cmdline(args) # Process startup details @@ -938,7 +941,7 @@ errread, errwrite): """Execute program (POSIX version)""" - if isinstance(args, basestring): + if isinstance(args, types.StringTypes): args = [args] if shell:

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python/dist/src/Lib/test test_peepholer.py, 1.11, 1.12
by rhettinger＠users.sourceforge.net Feb. 20, 2005

Feb. 20, 2005

Update of /cvsroot/python/python/dist/src/Lib/test In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv3491 Modified Files: test_peepholer.py Log Message: Teach the peepholer to fold unary operations on constants. Afterwards, -0.5 loads in a single step and no longer requires a runtime UNARY_NEGATIVE operation. Index: test_peepholer.py =================================================================== RCS file: /cvsroot/python/python/dist/src/Lib/test/test_peepholer.py,v retrieving revision 1.11 retrieving revision 1.12 diff -u -d -r1.11 -r1.12 --- test_peepholer.py 10 Feb 2005 20:40:29 -0000 1.11 +++ test_peepholer.py 20 Feb 2005 12:46:54 -0000 1.12 @@ -133,6 +133,25 @@ asm = dis_single('a="x"*1000') self.assert_('(1000)' in asm) + def test_folding_of_unaryops_on_constants(self): + for line, elem in ( + ('`1`', "('1')"), # unary convert + ('-0.5', '(-0.5)'), # unary negative + ('~-2', '(1)'), # unary invert + ): + asm = dis_single(line) + self.assert_(elem in asm, asm) + self.assert_('UNARY_' not in asm) + + # Verify that unfoldables are skipped + for line, elem in ( + ('-"abc"', "('abc')"), # unary negative + ('~"abc"', "('abc')"), # unary invert + ): + asm = dis_single(line) + self.assert_(elem in asm, asm) + self.assert_('UNARY_' in asm) + def test_elim_extra_return(self): # RETURN LOAD_CONST None RETURN --> RETURN def f(x):

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