Mailman 3 April 2008 - Python-Dev

cStringIO buffer interface
by Farshid Lashkari April 30, 2008

April 30, 2008

Hello, I'm not sure if this is the right place to ask, so I apologize ahead of time if it is. I was just curious as to why cStringIO objects don't implement the buffer interface. cStringIO objects seem similar to string and array objects, and those support the buffer protocol. Is there a reason against allowing cStringIO to support at least the read buffer interface, or is just that nobody has considered it until now? Thanks, Farshid

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enhanced ioctl?
by Neal Becker April 28, 2008

April 28, 2008

IIUC, current ioctl is not capable of handling arbitrary argument types. This code will allow any arg type (such as structures with pointers to embedded structures). The code for _IOC is taken from linux and might not be portable. from ctypes import * libc = CDLL ('/lib/libc.so.6') #print libc.ioctl def set_ioctl_argtype (arg_type): libc.ioctl.argtypes = (c_int, c_int, arg_type) _IOC_WRITE = 0x1 _IOC_NRBITS= 8 _IOC_TYPEBITS= 8 _IOC_SIZEBITS= 14 _IOC_DIRBITS= 2 _IOC_NRSHIFT= … [View More]

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Dealing with a desired change to warnings.showwarning()
by Brett Cannon April 28, 2008

April 28, 2008

As part of my rewrite of warnings into C, I added a new, optional argument to showwarning(): line, which defaults to None. As http://bugs.python.org/issue2705 points out, though, since the function has been documented as being allowed to be overridden, this potentially breaks existing showwarning() implementations. That means something needs to change. One option is to introduce a new function. But what to name it? show_warning()? That small of a name change seems like asking for trouble, but … [View More]

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Is Py_WIN_WIDE_FILENAMES still alive?
by ocean April 28, 2008

April 28, 2008

Hello. I noticed when I removes following line in trunk/PC/pyconfig.h #define Py_WIN_WIDE_FILENAMES _fileio.c and posixmodule.c (and maybe more) cannot be compiled on Windows. When Py_WIN_WIDE_FILENAMES is not defined, how should python behave? - call posix functions like open(2) - call ANSI Win32 APIs like MoveFileA Or maybe this macro is not used anymore? Thank you.

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Python 2.6a2 execution times with various compilers
by Jeroen Ruigrok van der Werven April 28, 2008

April 28, 2008

I did some performance comparisons with various compilers and the resulting Python 2.6a2 and pybench. I put the details on http://www.in-nomine.org/2008/04/11/python-26a2-execution-times-with-variou… Of course, take benchmark results with a grain of salt, but it seems ICC can provide people with an added performance edge when using Python. In short: I measured a speedup between ~21%-29% with ICC compared to GCC. -- Jeroen Ruigrok van der Werven <asmodai(-at-)in-nomine.org> / asmodai イェ… [View More]

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Double specification of function signatures?
by skip＠pobox.com April 28, 2008

April 28, 2008

While cleaning up the documentation for the tempfile module I noticed that the docstrings for the mk*temp functions in the module itself list their signatures (incompletely) in the first line. I don't know if that was intentional, but it seems both redundant and error-prone to me. The help() function already displays the signatures of Python functions. There's no need to put them in docstrings and risk having them out-of-date. For example: >>> help(tempfile.mkdtemp) Help … [View More]

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PyErr_Py3kWarn
by Benjamin Peterson April 27, 2008

April 27, 2008

I have a patch to to add an easy way to give a Py3k warning (issue 2671). Does this sound useful? -- Cheers, Benjamin Peterson

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annoying dictionary problem, non-existing keys
by bvidinli April 25, 2008

April 25, 2008

i use dictionaries to hold some config data, such as: conf={'key1':'value1','key2':'value2'} and so on... when i try to process conf, i have to code every time like: if conf.has_key('key1'): if conf['key1']<>'': other commands.... this is very annoying. in php, i was able to code only like: if conf['key1']=='someth' in python, this fails, because, if key1 does not exists, it raises an exception. MY question: is there a way to directly get value of an array/tuple/dict … [View More]

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Do we still need BaseAddress in .vcproj files?
by Trent Nelson April 25, 2008

April 25, 2008

I just did this locally to all my .vcproj files for .pyds: - BaseAddress="0x1e000000" + RandomizedBaseAddress="2" This was partly out of curiosity, and partly because it was quicker doing that than finding a new unique base address to use for a new module I added to my local tree. Rebuilt everything and ran a full regression test, and everything passed. What am I missing? Do we have parts of Python that rely on finding modules at explicit base addresses? Is BaseAddress a relic from the … [View More]

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Summary of Tracker Issues
by Tracker April 25, 2008

April 25, 2008

ACTIVITY SUMMARY (04/18/08 - 04/25/08) 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. 1850 open (+26) / 12667 closed (+11) / 14517 total (+37) Open issues with patches: 558 Average duration of open issues: 707 days. Median duration of open issues: 1333 days. Open Issues Breakdown open 1828 (+26) pending 22 ( +0) Issues Created Or Reopened (37) _______________________________ … [View More]

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