Mailman 3 September 2010 - Python-Dev

terminology for "free variables" in Python
by Eli Bendersky Sept. 10, 2010

Sept. 10, 2010

The execution model section of the Python reference manual defines free variables as follows: "If a variable is used in a code block but not defined there, it is a free variable" This makes sense and fits the academic definition. The documentation of the symtable module supports this definition - it says about is_free(): "return True if the symbol is referenced in its block but not assigned to". However, it appears that in the CPython front-end source code (in particular the parts dealing with the symbol table), a free variables has a somewhat stricter meaning. For example, in this chunk of code: def some_func(myparam): def internalfunc(): return cc * myparam CPython infers that in 'internalfunc', while 'myparam' is free, 'cc' is global because 'cc' isn't bound in the enclosing scope, although according to the definitions stated above, both should be considered free. The bytecode generated for loading cc and myparam is different, of course. Is there a (however slight) inconsistency of terms here, or is it my misunderstanding? Thanks in advance, Eli

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PEP 3149 thoughts
by "Martin v. Löwis" Sept. 10, 2010

Sept. 10, 2010

I know the PEP is accepted, but I would still like to see some changes/clarifications. 1. What is the effect of this PEP on Windows? Is this a Linux-only feature? If not, who is going to provide the changes for Windows? (More specifically: if this is indeed meant for Windows, and if no Windows implementation arrives before 3.2b1, I'd ask that the changes be rolled back, and integration is deferred until there is Windows support) 2. Why does the PEP recommend installing stuff into /usr/share/pyshared? According to the Linux FHS, /usr/share is for Architecture- independent data, see http://www.pathname.com/fhs/pub/fhs-2.3.html#USRSHAREARCHITECTUREINDEPENDEN… In particular, it's objective is that you can NFS-share it across, say, both SPARC Linux and x86 Linux. I believe the PEP would break this, as SPARC and x86 executables would override each other. 3. When the PEP recommends that stuff gets installed into pyshared, why does the patch then not implement this recommendation, but continues installing files into lib-dynload? Regards, Martin

7 13

Summary of Python tracker Issues
by Python tracker Sept. 10, 2010

Sept. 10, 2010

ACTIVITY SUMMARY (2010-09-03 - 2010-09-10) Python tracker at http://bugs.python.org/ To view or respond to any of the issues listed below, click on the issue. Do NOT respond to this message. Issues stats: open 2554 (+46) closed 19050 (+69) total 21604 (+65) Open issues with patches: 1078 Issues opened (46) ================== #8420: Objects/setobject.c contains unsafe code http://bugs.python.org/issue8420 reopened by eric.araujo #9129: DoS smtpd module vulnerability http://bugs.python.org/issue9129 reopened by giampaolo.rodola #9261: include higher (../../) dirs fails http://bugs.python.org/issue9261 reopened by eric.araujo #9759: GzipFile object should raise ValueError on .read() after .clos http://bugs.python.org/issue9759 opened by ack #9761: stale .pyc files aren't cleaned out http://bugs.python.org/issue9761 opened by Steve.Thompson #9762: build failures http://bugs.python.org/issue9762 opened by pitrou #9763: Crashes upon run after syntax error encountered in OSX 10.5.8 http://bugs.python.org/issue9763 opened by william.barr #9764: Tools/buildbot/external.bat should download and built tix http://bugs.python.org/issue9764 opened by stutzbach #9765: tcl-8 vs tcl8 http://bugs.python.org/issue9765 opened by stutzbach #9769: PyUnicode_FromFormatV() doesn't handle non-ascii text correctl http://bugs.python.org/issue9769 opened by haypo #9770: curses.isblank function doesn't match ctype.h http://bugs.python.org/issue9770 opened by kevinpt #9771: add an optional "default" argument to tokenize.detect_encoding http://bugs.python.org/issue9771 opened by flox #9772: test_pep277 failure on AMD64 debian parallel buildbot http://bugs.python.org/issue9772 opened by flox #9773: test_tarfile fails because of inaccurate mtime on AMD64 debian http://bugs.python.org/issue9773 opened by flox #9774: test_smtpnet fails with "[110] Connection timed out" on AMD64 http://bugs.python.org/issue9774 opened by flox #9775: Multiprocessing, logging and atexit play not well together http://bugs.python.org/issue9775 opened by aronacher #9778: Make hash values the same width as a pointer (or Py_ssize_t) http://bugs.python.org/issue9778 opened by pitrou #9779: argparse.ArgumentParser not support unicode in print help http://bugs.python.org/issue9779 opened by gkraser #9782: _multiprocessing.c warnings under 64-bit Windows http://bugs.python.org/issue9782 opened by pitrou #9783: _elementtree.c warnings under 64-bit Windows http://bugs.python.org/issue9783 opened by pitrou #9784: _msi.c warnings under 64-bit Windows http://bugs.python.org/issue9784 opened by pitrou #9786: Native TLS support for pthreads http://bugs.python.org/issue9786 opened by krisvale #9787: Release the TLS lock during allocations http://bugs.python.org/issue9787 opened by krisvale #9788: atexit and execution order http://bugs.python.org/issue9788 opened by giampaolo.rodola #9790: ntpath contains imports inside functions http://bugs.python.org/issue9790 opened by brian.curtin #9791: nntplib.py lacks a test suite http://bugs.python.org/issue9791 opened by giampaolo.rodola #9795: nntplib.NNTP should support the context protocol http://bugs.python.org/issue9795 opened by pitrou #9796: Add summary tables for unittest API http://bugs.python.org/issue9796 opened by eric.araujo #9800: Fast path for small int-indexing of lists and tuples http://bugs.python.org/issue9800 opened by pitrou #9801: Can not use append/extend to lists in a multiprocessing manage http://bugs.python.org/issue9801 opened by Jimbofbx #9802: Document 'stability' of builtin min() and max() http://bugs.python.org/issue9802 opened by mattheww #9803: IDLE closes with save while breakpoint open http://bugs.python.org/issue9803 opened by Jimbofbx #9807: deriving configuration information for different builds with t http://bugs.python.org/issue9807 opened by doko #9808: Implement os.getlogin on Windows http://bugs.python.org/issue9808 opened by janglin #9809: Wrong Registery Entries on win64 http://bugs.python.org/issue9809 opened by GreYFoX #9810: bzip2 build sometimes fails (VS8.0) http://bugs.python.org/issue9810 opened by ocean-city #9811: strftime strips '%' from unknown format codes on OS X http://bugs.python.org/issue9811 opened by sverrejoh #9812: cPickle segfault with nested dicts in threaded env http://bugs.python.org/issue9812 opened by kdombrowski #9814: subprocess isn't friendly to other Python implementations with http://bugs.python.org/issue9814 opened by dino.viehland #9815: test_tarfile sometimes ends with error "Cannot remoe dir" http://bugs.python.org/issue9815 opened by ocean-city #9817: expat copyright/license file is missing http://bugs.python.org/issue9817 opened by doko #9818: build files to build Lib/distutils/command/wininst-9.0* are mi http://bugs.python.org/issue9818 opened by doko #9820: Windows : os.listdir(b'.') doesn't raise an error for unencoda http://bugs.python.org/issue9820 opened by haypo #9821: Support PEP 383 on Windows: mbcs support of surrogateescape er http://bugs.python.org/issue9821 opened by haypo #9822: windows batch files are dependent on cmd current directory http://bugs.python.org/issue9822 opened by sorin #1058305: HTMLParser.locatestartagend regex too stringent http://bugs.python.org/issue1058305 reopened by r.david.murray Most recent 15 issues with no replies (15) ========================================== #9818: build files to build Lib/distutils/command/wininst-9.0* are mi http://bugs.python.org/issue9818 #9817: expat copyright/license file is missing http://bugs.python.org/issue9817 #9815: test_tarfile sometimes ends with error "Cannot remoe dir" http://bugs.python.org/issue9815 #9814: subprocess isn't friendly to other Python implementations with http://bugs.python.org/issue9814 #9810: bzip2 build sometimes fails (VS8.0) http://bugs.python.org/issue9810 #9803: IDLE closes with save while breakpoint open http://bugs.python.org/issue9803 #9800: Fast path for small int-indexing of lists and tuples http://bugs.python.org/issue9800 #9790: ntpath contains imports inside functions http://bugs.python.org/issue9790 #9783: _elementtree.c warnings under 64-bit Windows http://bugs.python.org/issue9783 #9782: _multiprocessing.c warnings under 64-bit Windows http://bugs.python.org/issue9782 #9779: argparse.ArgumentParser not support unicode in print help http://bugs.python.org/issue9779 #9774: test_smtpnet fails with "[110] Connection timed out" on AMD64 http://bugs.python.org/issue9774 #9773: test_tarfile fails because of inaccurate mtime on AMD64 debian http://bugs.python.org/issue9773 #9772: test_pep277 failure on AMD64 debian parallel buildbot http://bugs.python.org/issue9772 #9771: add an optional "default" argument to tokenize.detect_encoding http://bugs.python.org/issue9771 Most recent 15 issues waiting for review (15) ============================================= #9822: windows batch files are dependent on cmd current directory http://bugs.python.org/issue9822 #9815: test_tarfile sometimes ends with error "Cannot remoe dir" http://bugs.python.org/issue9815 #9812: cPickle segfault with nested dicts in threaded env http://bugs.python.org/issue9812 #9808: Implement os.getlogin on Windows http://bugs.python.org/issue9808 #9807: deriving configuration information for different builds with t http://bugs.python.org/issue9807 #9802: Document 'stability' of builtin min() and max() http://bugs.python.org/issue9802 #9800: Fast path for small int-indexing of lists and tuples http://bugs.python.org/issue9800 #9787: Release the TLS lock during allocations http://bugs.python.org/issue9787 #9786: Native TLS support for pthreads http://bugs.python.org/issue9786 #9775: Multiprocessing, logging and atexit play not well together http://bugs.python.org/issue9775 #9771: add an optional "default" argument to tokenize.detect_encoding http://bugs.python.org/issue9771 #9769: PyUnicode_FromFormatV() doesn't handle non-ascii text correctl http://bugs.python.org/issue9769 #9765: tcl-8 vs tcl8 http://bugs.python.org/issue9765 #9750: sqlite3 iterdump fails on column with reserved name http://bugs.python.org/issue9750 #9741: msgfmt.py generates invalid mo because msgfmt.make() does not http://bugs.python.org/issue9741 Top 10 most discussed issues (10) ================================= #4026: fcntl extension fails to build on AIX 6.1 http://bugs.python.org/issue4026 14 msgs #9598: untabify.py fails on files that contain non-ascii characters http://bugs.python.org/issue9598 12 msgs #9730: base64 docs refers to strings instead of bytes http://bugs.python.org/issue9730 11 msgs #941346: AIX shared library fix http://bugs.python.org/issue941346 10 msgs #9807: deriving configuration information for different builds with t http://bugs.python.org/issue9807 9 msgs #9662: ctypes not building under OS X because of ffi_closure_free not http://bugs.python.org/issue9662 8 msgs #9761: stale .pyc files aren't cleaned out http://bugs.python.org/issue9761 7 msgs #9778: Make hash values the same width as a pointer (or Py_ssize_t) http://bugs.python.org/issue9778 7 msgs #9786: Native TLS support for pthreads http://bugs.python.org/issue9786 7 msgs #8372: socket: Buffer overrun while reading unterminated AF_UNIX addr http://bugs.python.org/issue8372 6 msgs Issues closed (69) ================== #3805: sslobj.read py3k takes odd arguments http://bugs.python.org/issue3805 closed by pitrou #3899: test_ssl.py doesn't properly test ssl integration with asyncor http://bugs.python.org/issue3899 closed by pitrou #3978: ZipFileExt.read() can be incredibly slow; patch included http://bugs.python.org/issue3978 closed by pitrou #4194: default subprocess.Popen buffer size http://bugs.python.org/issue4194 closed by pitrou #4941: Tell GCC Py_DECREF is unlikely to call the destructor http://bugs.python.org/issue4941 closed by pitrou #4947: sys.stdout fails to use default encoding as advertised http://bugs.python.org/issue4947 closed by haypo #5506: io.BytesIO doesn't support the buffer protocol http://bugs.python.org/issue5506 closed by pitrou #5985: Implement os.path.samefile and os.path.sameopenfile on Windows http://bugs.python.org/issue5985 closed by ocean-city #6394: getppid support in os module on Windows http://bugs.python.org/issue6394 closed by amaury.forgeotdarc #6656: locale.format_string fails on escaped percentage http://bugs.python.org/issue6656 closed by r.david.murray #6768: asyncore file_wrapper leaking file descriptors? http://bugs.python.org/issue6768 closed by giampaolo.rodola #7451: improve json decoding performance http://bugs.python.org/issue7451 closed by pitrou #7566: Add ntpath.sameopenfile support for Windows http://bugs.python.org/issue7566 closed by brian.curtin #7736: os.listdir hangs since opendir() and closedir() do not release http://bugs.python.org/issue7736 closed by pitrou #7862: fileio.c: ValueError vs. IOError with impossible operations http://bugs.python.org/issue7862 closed by pitrou #7889: random produces different output on different architectures http://bugs.python.org/issue7889 closed by rhettinger #8312: Add post/pre hooks for distutils commands http://bugs.python.org/issue8312 closed by eric.araujo #8324: add a distutils test command http://bugs.python.org/issue8324 closed by eric.araujo #8574: transient_internet() (test_support): use socket.setdefaulttime http://bugs.python.org/issue8574 closed by pitrou #8597: build out-of-line asm on Windows http://bugs.python.org/issue8597 closed by skrah #8734: msvcrt get_osfhandle crash on bad FD http://bugs.python.org/issue8734 closed by pitrou #8956: Incorrect ValueError message for subprocess.Popen.send_signal( http://bugs.python.org/issue8956 closed by brian.curtin #9025: Non-uniformity in randrange for large arguments. http://bugs.python.org/issue9025 closed by rhettinger #9188: test_gdb fails for UCS2 builds with UCS2 gdb http://bugs.python.org/issue9188 closed by pitrou #9193: PEP 3149 (versioned .so files) reference implementation http://bugs.python.org/issue9193 closed by barry #9199: distutils upload command crashes when displaying server respon http://bugs.python.org/issue9199 closed by eric.araujo #9225: Replace DUP_TOPX with DUP_TOP_TWO http://bugs.python.org/issue9225 closed by pitrou #9270: distutils.util.getplatform and sysconfig.getplatform differ http://bugs.python.org/issue9270 closed by eric.araujo #9293: Unsupported IO operations should raise UnsupportedOperation http://bugs.python.org/issue9293 closed by pitrou #9324: signal.signal(bogus_signal, handler) segfaults on Windows http://bugs.python.org/issue9324 closed by brian.curtin #9379: random.randrange behaviour problems http://bugs.python.org/issue9379 closed by rhettinger #9410: Add Unladen Swallow's optimizations to Python 3's pickle. http://bugs.python.org/issue9410 closed by pitrou #9503: print statement hangs Windows service http://bugs.python.org/issue9503 closed by amaury.forgeotdarc #9581: PosixGroupsTester fails as root http://bugs.python.org/issue9581 closed by pitrou #9707: Reworked threading.local reference implementation http://bugs.python.org/issue9707 closed by pitrou #9719: build_ssl.py: cannot find 'asm64/*.*' http://bugs.python.org/issue9719 closed by loewis #9747: os.getresgid() documentation mentions "user ids", not "group i http://bugs.python.org/issue9747 closed by georg.brandl #9748: .inputrc magic-space breaks interactive mode http://bugs.python.org/issue9748 closed by amaury.forgeotdarc #9752: MSVC Compiler warning in Python\import.c http://bugs.python.org/issue9752 closed by stutzbach #9754: assertWarns and assertWarnsRegexp http://bugs.python.org/issue9754 closed by pitrou #9757: Add context manager protocol to memoryviews http://bugs.python.org/issue9757 closed by pitrou #9758: ioctl mutable buffer copying problem http://bugs.python.org/issue9758 closed by pitrou #9760: Suggestion for improving with documentation http://bugs.python.org/issue9760 closed by georg.brandl #9766: warnings has "onceregistry" and "once_registry" http://bugs.python.org/issue9766 closed by brett.cannon #9767: Failures in json doc examples http://bugs.python.org/issue9767 closed by georg.brandl #9768: IDLE / Black frame in active window http://bugs.python.org/issue9768 closed by ned.deily #9776: Inconsistent spacing in fcntl.fcntl docstring http://bugs.python.org/issue9776 closed by georg.brandl #9777: test_socket.GeneralModuleTests.test_idna should require the "n http://bugs.python.org/issue9777 closed by pitrou #9780: fill character cannot be '{' http://bugs.python.org/issue9780 closed by georg.brandl #9781: Dead link in Italian Tutorial http://bugs.python.org/issue9781 closed by benjamin.peterson #9785: _PyUnicode_New(), throw and memory problem http://bugs.python.org/issue9785 closed by Trigve.Siver #9789: Explicit buffer release for memoryview objects http://bugs.python.org/issue9789 closed by ncoghlan #9792: create_connection() recasts timeout errors http://bugs.python.org/issue9792 closed by pitrou #9793: Typo fix in What's New for 3.2: dynmaic -> dynamic http://bugs.python.org/issue9793 closed by eric.araujo #9794: socket.create_connection context manager http://bugs.python.org/issue9794 closed by giampaolo.rodola #9797: wrong assumption in pystate.c http://bugs.python.org/issue9797 closed by pitrou #9798: time.tzset() doesn't properly reset the time.timezone variable http://bugs.python.org/issue9798 closed by eric.araujo #9799: Compilation error for branch py3k on AIX 6 http://bugs.python.org/issue9799 closed by pitrou #9804: ascii() does not always join surrogate pairs http://bugs.python.org/issue9804 closed by pitrou #9805: Documentation on old-style formatting of dicts is overly restr http://bugs.python.org/issue9805 closed by r.david.murray #9806: no need to try loading posix extensions without SOABI http://bugs.python.org/issue9806 closed by benjamin.peterson #9813: Module Name Changed http://bugs.python.org/issue9813 closed by brett.cannon #9816: random.jumpahead and PRNG sequence independence http://bugs.python.org/issue9816 closed by rhettinger #9819: TESTFN_UNICODE and TESTFN_UNDECODABLE http://bugs.python.org/issue9819 closed by haypo #1552880: [Python2] Use utf-8 in the import machinery on Windows to supp http://bugs.python.org/issue1552880 closed by loewis #1718574: build_clib --build-clib/--build-temp option bugs http://bugs.python.org/issue1718574 closed by eric.araujo #1100562: deepcopying listlike and dictlike objects http://bugs.python.org/issue1100562 closed by pitrou #1053365: nntplib: add support for NNTP over SSL http://bugs.python.org/issue1053365 closed by pitrou #1479626: Uninstall does not clean registry http://bugs.python.org/issue1479626 closed by brian.curtin

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Re: [Python-Dev] cProfile and threads
by GrosBedo Sept. 8, 2010

Sept. 8, 2010

Hello, Ive just stumbled accross your changes Krisvale, and from your last reply, I can see that you invalidated your changes : I just realized that this is probably a redundant change. > We have C apis to get all the Thread states in an interpreter state (I didn't even know there was such a thing as multiple interpreter states, but there!) > This is the PyInterpreterState_ThreadHead() api et al. > From C, all that is missing is a SetTrace api that takes a thread state. > > From python, the threading module provides access to all Thread objects, and each of those has a settrace/setprofile method. > > To turn on global tracing from cProfile, all that is needed is to iterate over all the Thread objects. > > Setting this to invalid, since there already are APIs to do this, at least from .py code. > > Could you please provide more explanations, or even an example ? Because it seems that you're the only one on earth to finally find a way to multithread the cProfiler...

2 2

Behaviour of max() and min() with equal keys
by Matthew Woodcraft Sept. 8, 2010

Sept. 8, 2010

In CPython, the builtin max() and min() have the property that if there are items with equal keys, the first item is returned. From a quick look at their source, I think this is true for Jython and IronPython too. However, this isn't currently a documented guarantee. Could it be made so? (As with the decision to declare sort() stable, it seems likely that by now there's code out there relying on it anyway.) -M-

6 12

Working on the Python code-base with a VIM-based setup
by Eli Bendersky Sept. 8, 2010

Sept. 8, 2010

Hello pydev, This is a meta-question which I hope is appropriate in this list (**). Recently I've switched to to VIM as my main development platform (in terms of code editing and navigation). Working on the Python code-base is both a concrete requirement and a yardstick for me - I want to be as effective as possible at it. Therefore I would like to ask those of you working on Python's code with VIM about your setups - the special tweaks to VIM & plugins you use to make working with the code as simple and effective as possible. Myself, since I'm still a VIM newbie, my setup is quite spartan. I created tags with: ctags -R Grammar Include Modules/ Objects/ Parser/ Python/ And now happily browse around the source code with Ctrl-], Ctrl-I/O, Ctrl-T and so on. I've also installed the Taglist plugin to show all functions/macros in open buffers - it's sometimes helpful. Other plugins I've found useful ar NERD-commenter (for commenting out chunks of code) and highlight_current_line (for a visual cue of where I am in a file). Besides, I've taken the suggested settings from the .vimrc file in Misc/ to help enforcing PEP-8. I heard that there are more sophisticated tags plugins that also allow one to check where a function is called for, and other intellisens-y stuff, though I'm not sure whether anyone uses it for Python's code. Thanks in advance, Eli (**) Note that it deals with the source code *of Python* (the stuff you download from Python's official SVN), not Python source code.

3 2

Thoughts fresh after EuroPython
by Guido van Rossum Sept. 7, 2010

Sept. 7, 2010

While the EuroPython sprints are still going on, I am back home, and after a somewhat restful night of sleep, I have some thoughts I'd like to share before I get distracted. Note, I am jumping wildly between topics. - Commit privileges: Maybe we've been too careful with only giving commit privileges to to experienced and trusted new developers. I spoke to Ezio Melotti and from his experience with getting commit privileges, it seems to be a case of "the lion is much more afraid of you than you are afraid of the lion". I.e. having got privileges he was very concerned about doing something wrong, worried about the complexity of SVN, and so on. Since we've got lots of people watching the commit stream, I think that there really shouldn't need to be a worry at all about a new committer doing something malicious, and there shouldn't be much worry about honest beginners' mistakes either -- the main worry remains that new committers don't use their privileges enough. So, my recommendation (which surely is a turn-around of my *own* attitude in the past) is to give out more commit privileges sooner. - Concurrency and parallelism: Russel Winder and Sarah Mount pushed the idea of CSP (http://en.wikipedia.org/wiki/Communicating_sequential_processes) in several talks at the conference. They (at least Russell) emphasized the difference between concurrency (interleaved event streams) and parallelism (using many processors to speed things up). Their prediction is that as machines with many processing cores become more prevalent, the relevant architecture will change from cores sharing a single coherent memory (the model on which threads are based) to one where each core has a limited amount of private memory, and communication is done via message passing between the cores. This gives them (and me :-) hope that the GIL won't be a problem as long as we adopt a parallel processing model. Two competing models are the Actor model, which is based on asynchronous communication, and CSP, which is synchronous (when a writer writes to a channel, it blocks until a reader reads that value -- a rendezvous). At least Sarah suggested that both models are important. She also mentioned that a merger is under consideration between the two major CSP-for-Python packages, Py-CSP and Python-CSP. I also believe that the merger will be based on the stdlib multiprocessing package, but I'm not sure. I do expect that we may get some suggestions from that corner to make some minor changes to details of multiprocessing (and perhaps threading), and I think we should be open to those (I expect these will be good suggestions for small tweaks, not major overhauls). - After seeing Raymond's talk about monocle (search for it on PyPI) I am getting excited again about PEP 380 (yield from, return values from generators). Having read the PEP on the plane back home I didn't see anything wrong with it, so it could just be accepted in its current form. Implementation will still have to wait for Python 3.3 because of the moratorium. (Although I wouldn't mind making an exception to get it into 3.2.) - This made me think of how the PEP process should evolve so as to not require my personal approval for every PEP. I think the model for future PEPs should be the one we used for PEP 3148 (futures, which was just approved by Jesse): the discussion is led and moderated by one designated "PEP handler" (a different one for each PEP) and the PEP handler, after reviewing the discussion, decides when the PEP is approved. A PEP handler should be selected for each PEP as soon as possible; without a PEP handler, discussing a PEP is not all that useful. The PEP handler should be someone respected by the community with an interest in the subject of the PEP but at an arms' length (at least) from the PEP author. The PEP handler will have to moderate feedback, separating useful comments from (too much) bikeshedding, repetitious lines of questioning, and other forms of obstruction. The PEP handler should also set and try to maintain a schedule for the discussion. Note that a schedule should not be used to break a tie -- it should be used to stop bikeshedding and repeat discussions, while giving all interested parties a chance to comment. (I should say that this is probably similar to the role of an IETF working group director with respect to RFCs.) - Specifically, if Raymond is interested, I wouldn't mind seeing him as the PEP handler for PEP 380. For some of Martin von Löwis's PEPs (382, 384) I think a PEP handler is sorely lacking -- from the language summit it appeared as if nobody besides Martin understands these PEPs. - A lot of things seem to be happening to make PyPI better. Is this being summarized somewhere? Based on some questions I received during my keynote Q&A (http://bit.ly/bdflqa) I think not enough people are aware of what we are already doing in this area. Frankly, I'm not sure I do, either: I think I've heard of a GSOC student and of plans to take over pypi.appspot.com (with the original developer's permission) to become a full and up-to-date mirror. Mirroring apparently also requires some client changes. Oh, and there's a proposed solution for the "register user" problem where apparently the clients had been broken by a unilateral change to the server to require a certain "yes I agree" checkbox. For a hopefully eventually exhaustive overview of what was accomplished at EuroPython, go to http://wiki.europython.eu/After -- and if you know some blog about EuroPython not yet listed, please add it there. -- --Guido van Rossum (python.org/~guido)

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Re: [Python-Dev] [Python-checkins] r84562 - in python/branches/py3k: Doc/library/io.rst Lib/_pyio.py Lib/test/test_memoryio.py Misc/NEWS Modules/_io/_iomodule.c Modules/_io/_iomodule.h Modules/_io/bytesio.c
by Nick Coghlan Sept. 7, 2010

Sept. 7, 2010

On Tue, Sep 7, 2010 at 4:48 AM, antoine.pitrou <python-checkins(a)python.org> wrote: > Modified: python/branches/py3k/Lib/test/test_memoryio.py > ============================================================================== > --- python/branches/py3k/Lib/test/test_memoryio.py (original) > +++ python/branches/py3k/Lib/test/test_memoryio.py Mon Sep 6 20:48:21 2010 > @@ -384,7 +384,31 @@ > del __main__.PickleTestMemIO > > > -class PyBytesIOTest(MemoryTestMixin, MemorySeekTestMixin, unittest.TestCase): > +class BytesIOMixin: > + > + def test_getbuffer(self): > + memio = self.ioclass(b"1234567890") > + buf = memio.getbuffer() > + self.assertEqual(bytes(buf), b"1234567890") > + memio.seek(5) > + buf = memio.getbuffer() > + self.assertEqual(bytes(buf), b"1234567890") > + # Trying to change the size of the BytesIO while a buffer is exported > + # raises a BufferError. > + self.assertRaises(BufferError, memio.write, b'x' * 100) > + self.assertRaises(BufferError, memio.truncate) > + # Mutating the buffer updates the BytesIO > + buf[3:6] = b"abc" > + self.assertEqual(bytes(buf), b"123abc7890") > + self.assertEqual(memio.getvalue(), b"123abc7890") > + # After the buffer gets released, we can resize the BytesIO again > + del buf > + support.gc_collect() > + memio.truncate() I've raised an RFE (http://bugs.python.org/issue9789) to point out that the need for that GC collect call in there to make the test portable to other implementations is rather ugly and supporting an explicit "buf.release()" call may be a nicer option. (And added Guido to the nosy list, since he wasn't keen on supporting the context management protocol idea, but I don't believe he said anything one way or the other about an ordinary method). > +class PyBytesIOTest(MemoryTestMixin, MemorySeekTestMixin, > + BytesIOMixin, unittest.TestCase): I was going to ask why CBytesIOTest wasn't affected, but checking the full source of the test file made everything clear :) Cheers, Nick. -- Nick Coghlan | ncoghlan(a)gmail.com | Brisbane, Australia

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Re: [Python-Dev] [Python-checkins] r84536 - sandbox/trunk/release/release.py
by Barry Warsaw Sept. 7, 2010

Sept. 7, 2010

On Sep 05, 2010, at 08:28 PM, georg.brandl wrote: >Author: georg.brandl >Date: Sun Sep 5 20:28:46 2010 >New Revision: 84536 > >Log: >Fix after changing NEWS layout. > >Modified: > sandbox/trunk/release/release.py > >Modified: sandbox/trunk/release/release.py >============================================================================== >--- sandbox/trunk/release/release.py (original) >+++ sandbox/trunk/release/release.py Sun Sep 5 20:28:46 2010 >@@ -396,13 +396,13 @@ > with open('Misc/NEWS', encoding="utf-8") as fp: > lines = fp.readlines() > for i, line in enumerate(lines): >- if line.startswith("(editors"): >+ if line.startswith("Python News"): > start = i > if line.startswith("What's"): > end = i > break > with open('Misc/NEWS', 'w', encoding="utf-8") as fp: >- fp.writelines(lines[:start+1]) >+ fp.writelines(lines[:start+2]) > fp.write(NEWS_TEMPLATE) > fp.writelines(lines[end-1:]) > print("Please fill in the the name of the next version.") Will this still work with the Python 2.7 NEWS file? -Barry

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Write access to hg.python.org
by Antoine Pitrou Sept. 7, 2010

Sept. 7, 2010

Hello, What is needed in order to have write (i.e. push) access to the hg.python.org repositories? What are the URLs (for example for the "benchmarks" repository)? Regards Antoine.

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