Mailman 3 December 2005 - Python-Dev

Re: [Python-Dev] Documentation about Python's GC, python-dev list messages referenced in Modules/gcmodule.c not reachable anymore
by Weber, Gregoire Dec. 7, 2005

Dec. 7, 2005

Hi Neil, Hi Tim, Hi Simon, your responsive and valuable answers cleared up most of the open questions and gave a very positive impression to my project leader about the python community and python itself. Thank you very much! I'm trying to get more into the GC implementation before asking more about some still open points. Gregoire

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ast-objects branch created
by "Martin v. Löwis" Dec. 6, 2005

Dec. 6, 2005

I created http://svn.python.org/projects/python/branches/ast-objects/ You can convert your repository to that branch with svn switch svn+ssh://pythondev@svn.python.org/python/branches/ast-objects in the toplevel directory. In particular, this features http://svn.python.org/projects/python/branches/ast-objects/Parser/asdl_c.py http://svn.python.org/projects/python/branches/ast-objects/Include/Python-a… http://svn.python.org/projects/python/branches/ast-objects/Python/Python-as… The … [View More]

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c.l.p post on docs
by A.M. Kuchling Dec. 6, 2005

Dec. 6, 2005

I just posted a lengthy message to comp.lang.python/python-list about Python's docs; the title is "Documentation suggestions". A short summary of the post is: "The RefGuide is hard to read and hard to keep updated. Do we need a friendly language description? If we do that, should the existing RefGuide be abandoned or maintained?" See the post for the full argument. (Hey, the post just showed up in Google Groups: <http://groups.google.com/group/comp.lang.python/browse_frm/thread/… [View More]

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Re: [Python-Dev] [Python-checkins] commit of r41586 - in python/trunk: Lib/SimpleXMLRPCServer.py Misc/NEWS
by Guido van Rossum Dec. 6, 2005

Dec. 6, 2005

Happened to see this commit. What's the magic about 10MB? Is there any understanding of what causes it to fail? What is the failure mode? Could it just be fragmentation causing the malloc or realloc to fail? Should we perhaps use a more conservative buffer size, e.g. 1MB or even 8K (the international standard for I/O buffering :-)? --Guido On 12/4/05, andrew.kuchling <python-checkins(a)python.org> wrote: > Author: andrew.kuchling > Date: Sun Dec 4 16:36:57 2005 > New Revision: … [View More]41586 > > Modified: > python/trunk/Lib/SimpleXMLRPCServer.py > python/trunk/Misc/NEWS > Log: > [Bug #792570] Under Windows, socket.read() seems to run into trouble when > asked to read tens of megabytes of data. On my Mac, it hits MemoryErrors > when reading around 15Mb in one chunk. The fix is to read the body in several > parts, not as one big piece. > > It would be nice to fix the underlying socket.read() problem, too. > > 2.4 bugfix candidate. > > > Modified: python/trunk/Lib/SimpleXMLRPCServer.py > ============================================================================== > --- python/trunk/Lib/SimpleXMLRPCServer.py (original) > +++ python/trunk/Lib/SimpleXMLRPCServer.py Sun Dec 4 16:36:57 2005 > @@ -422,8 +422,19 @@ > """ > > try: > - # get arguments > - data = self.rfile.read(int(self.headers["content-length"])) > + # Get arguments by reading body of request. > + # We read this in chunks to avoid straining > + # socket.read(); around the 10 or 15Mb mark, some platforms > + # begin to have problems (bug #792570). > + max_chunk_size = 10*1024*1024 > + size_remaining = int(self.headers["content-length"]) > + L = [] > + while size_remaining: > + chunk_size = min(size_remaining, max_chunk_size) > + L.append(self.rfile.read(chunk_size)) > + size_remaining -= len(L[-1]) > + data = ''.join(L) > + > # In previous versions of SimpleXMLRPCServer, _dispatch > # could be overridden in this class, instead of in > # SimpleXMLRPCDispatcher. To maintain backwards compatibility, > > Modified: python/trunk/Misc/NEWS > ============================================================================== > --- python/trunk/Misc/NEWS (original) > +++ python/trunk/Misc/NEWS Sun Dec 4 16:36:57 2005 > @@ -451,6 +451,9 @@ > - Bug #1222790: in SimpleXMLRPCServer, set the reuse-address and close-on-exec > flags on the HTTP listening socket. > > +- Bug #792570: SimpleXMLRPCServer had problems if the request grew too large. > + Fixed by reading the HTTP body in chunks instead of one big socket.read(). > + > - Bug #1110478: Revert os.environ.update to do putenv again. > > - Bug #1103844: fix distutils.install.dump_dirs() with negated options. > _______________________________________________ > Python-checkins mailing list > Python-checkins(a)python.org > http://mail.python.org/mailman/listinfo/python-checkins > -- --Guido van Rossum (home page: http://www.python.org/~guido/) [View Less]

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Dynamic Link Library
by musicdev Dec. 5, 2005

Dec. 5, 2005

Hi everyone, Apologies if my question is a bit novice-ish. I was wondering if there was a way of creating a Dynamic Link Library with Python. Please provide any answers you may have. Warmest Regards, musicdev

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svn problem - can't get log info for a specific revision
by skip＠pobox.com Dec. 5, 2005

Dec. 5, 2005

I'm investigating some problems we're having at work with SIGUSR1 handling. Our apps tend to see KeyboardInterrupt when sent SIGUSR1 signals. We're still running 2.3.4 but are in the process of installing/testing 2.4.2. A couple "find ... | xargs egrep -i usr1" commands in the 2.3 and 2.4 trees showed me that between the two a test was added to test_threadsignals.py, apparently in svn revision 36760: % svn blame Lib/test/test_threadsignals.py ... 36760 mwh 36760 … [View More]

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Proposed additional keyword argument in logging calls
by Vinay Sajip Dec. 4, 2005

Dec. 4, 2005

On numerous occasions, requests have been made for the ability to easily add user-defined data to logging events. For example, a multi-threaded server application may want to output specific information to a particular server thread (e.g. the identity of the client, specific protocol options for the client connection, etc.) This is currently possible, but you have to subclass the Logger class and override its makeRecord method to put custom attributes in the LogRecord. These can then be output … [View More]

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SVN backup?
by Aahz Dec. 4, 2005

Dec. 4, 2005

While cleaning up some old CDs, I discovered that I had received some backups of the CVS repository. Should we repeat the exercise for SVN? -- Aahz (aahz(a)pythoncraft.com) <*> http://www.pythoncraft.com/ "Don't listen to schmucks on USENET when making legal decisions. Hire yourself a competent schmuck." --USENET schmuck (aka Robert Kern)

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Proposed additional keyword argument in logging calls
by Jim Jewett Dec. 2, 2005

Dec. 2, 2005

> I couldn't think of a good reason why it should be possible to overwrite these > values with values from a user-supplied dictionary, other than to spoof log > entries in some way. The intention is to stop a user accidentally overwriting > one of the above attributes. This makes sense, but is it worth the time to check on each logging call? -jJ

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Subject lines of commit email
by "Martin v. Löwis" Dec. 2, 2005

Dec. 2, 2005

Due to popular demand, we have changed the format of the subject lines that mailer.py will send out on commit, to include the file names of the modified files (not just the directory). As the original mailer.py couldn't do that, David Goodger contributed the necessary changes. If people feel strongly that this should be reverted, we will need to take a poll, as people also feel strongly that file names in the subject line are essential. Regards, Martin

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