Mailman 3 October 2005 - Python-Dev

Static builds on Windows (continued)
by Marvin Oct. 4, 2005

Oct. 4, 2005

Earlier references: http://mail.python.org/pipermail/python-dev/2004-July/046499.html I want to be able to create a version of python24.lib that is a static library, suitable for creating a python.exe or other .exe using python's api. So I did as the earlier poster suggested, using 2.4.1 sources. I modified the PCBuild/pythoncore and python .vcproj files as follows: General/ ConfigurationType/ Static library (was dynamic in pythoncore) c/C++ Code Generation RT Library /MT (was /MTD for … [View More]

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Proposal for 2.5: Returning values from PEP 342 enhanced generators
by Piet Delport Oct. 3, 2005

Oct. 3, 2005

PEP 255 ("Simple Generators") closes with: > Q. Then why not allow an expression on "return" too? > > A. Perhaps we will someday. In Icon, "return expr" means both "I'm > done", and "but I have one final useful value to return too, and > this is it". At the start, and in the absence of compelling uses > for "return expr", it's simply cleaner to use "yield" exclusively > for delivering values. Now that Python 2.5 gained enhanced generators (multitudes rejoice!… [View More]

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Re: [Python-Dev] PEP 343 and __with__
by Phillip J. Eby Oct. 3, 2005

Oct. 3, 2005

At 05:15 PM 10/3/2005 -0400, Jason Orendorff wrote: >Phillip J. Eby writes: > > You didn't offer any reasons why this would be useful and/or good. > >It makes it dramatically easier to write Python classes that correctly >support 'with'. I don't see any simple way to do this under PEP 343; >the only sane thing to do is write a separate @contextmanager >generator, as all of the examples do. Wha? For locks (the example you originally gave), this is trivial. >… [View More]

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Tests and unicode
by Reinhold Birkenfeld Oct. 3, 2005

Oct. 3, 2005

Hi, I looked whether I could make the test suite pass again when compiled with --disable-unicode. One problem is that no Unicode escapes can be used since compiling the file raises ValueErrors for them. Such strings would have to be produced using unichr(). Is this the right way? Or is disabling Unicode not supported any more? Reinhold -- Mail address is perfectly valid!

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PEP 343 and __with__
by Jason Orendorff Oct. 3, 2005

Oct. 3, 2005

I'm -1 on PEP 343. It seems ...complex. And even with all the complexity, I *still* won't be able to type with self.lock: ... which I submit is perfectly reasonable, clean, and clear. Instead I have to type with locking(self.lock): ... where locking() is apparently either a new builtin, a standard library function, or some 6-line contextmanager I have to write myself. So I have two suggestions. 1. I didn't find any suggestion of a __with__() method in the archives. So I feel … [View More]

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Why does __getitem__ slot of builtin call sequence methods first?
by Travis Oliphant Oct. 2, 2005

Oct. 2, 2005

The new ndarray object of scipy core (successor to Numeric Python) is a C extension type that has a getitem defined in both the as_mapping and the as_sequence structure. The as_sequence mapping is just so PySequence_GetItem will work correctly. As exposed to Python the ndarray object as a .__getitem__ wrapper method. Why does this wrapper call the sequence getitem instead of the mapping getitem method? Is there anyway to get at a mapping-style __getitem__ method from Python? This … [View More]

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C API doc fix
by Jim Jewett Oct. 2, 2005

Oct. 2, 2005

On 9/29/05, Robey Pointer <robey at lag.net> wrote: > Yesterday I ran into a bug in the C API docs. The top of this page: > > http://docs.python.org/api/unicodeObjects.html > > says: > > Py_UNICODE > This type represents a 16-bit unsigned storage type which is > used by Python internally as basis for holding Unicode ordinals. On > platforms where wchar_t is available and also has 16-bits, Py_UNICODE > is a typedef alias for wchar_t to enhance … [View More]

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Help needed with MSI permissions
by "Martin v. Löwis" Oct. 2, 2005

Oct. 2, 2005

I have various reports that the Python 2.4 installer does not work if you are trying to install in a non-standard location as a non-privileged user, e.g. #1298962, #1234328, #1232947, #1199808. Despite many attempts, I haven't been able to reproduce any such problem, and the submitters weren't really able to experiment much, either. So, if anybody is able to reproduce any of these reports, and give me instructions on how to reproduce it myself, that would be very much appreciated. Regards, Martin

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IDLE development
by Noam Raphael Oct. 1, 2005

Oct. 1, 2005

Hello, More than a year and a half ago, I posted a big patch to IDLE which adds support for completion and much better calltips, along with some other improvements. Since then, I had some mail conversations with Kurt B. Kaiser, who is responsible for IDLE, which resulted in nothing. My last mail, from Jul 10, saying (with more details) "I made the minor changes you asked for, let's get it in, it's not very complicated" was unanswered. This is just an example of the fact that IDLE development … [View More]

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Pythonic concurrency
by Jim Jewett Oct. 1, 2005

Oct. 1, 2005

Bruce Eckel wrote: > 3) Tasks are cheap enough that I can make > thousands of them, ... > 4) Tasks are "self-guarding," so they prevent > other tasks from interfering with them. The > only way tasks can communicate with each > other is through some kind of formal > mechanism (something queue-ish, > I'd imagine). I think these two are the hardest to reconcile. Shane Hathaway's suggestion starts from the process end. A new process isn't cheap. Keeping the other … [View More]

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