Mailman 3 April 2013 - Python-Dev

give IDLE its own NEWS section?
by Benjamin Peterson April 6, 2013

April 6, 2013

I noticed IDLE changes were being put under the "library" section in Misc/NEWS. How about creating a IDLE section? -- Regards, Benjamin

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Re: [Python-Dev] [Python-checkins] cpython (merge 3.3 -> default): Fix typo
by Eli Bendersky April 6, 2013

April 6, 2013

On Fri, Apr 5, 2013 at 1:40 AM, andrew.svetlov <python-checkins(a)python.org>wrote: > http://hg.python.org/cpython/rev/6cf485ffd325 > changeset: 83110:6cf485ffd325 > parent: 83106:94fb906e5899 > parent: 83109:9610ede72ed2 > user: Andrew Svetlov <andrew.svetlov(a)gmail.com> > date: Fri Apr 05 11:40:01 2013 +0300 > summary: > Fix typo > > files: > Doc/howto/argparse.rst | 2 +- > 1 files changed, 1 insertions(+), 1 deletions(-) > > > diff --git a/Doc/howto/argparse.rst b/Doc/howto/argparse.rst > --- a/Doc/howto/argparse.rst > +++ b/Doc/howto/argparse.rst > @@ -668,7 +668,7 @@ > So far, we have been working with two methods of an > :class:`argparse.ArgumentParser` instance. Let's introduce a third one, > :meth:`add_mutually_exclusive_group`. It allows for us to specify options > that > -conflict with each other. Let's also change the rest of the program make > the > +conflict with each other. Let's also change the rest of the program to > make the > new functionality makes more sense: > <snip> Andrew, while you're at it you can also fix the rest of the sentence, which makes no sense ;-) Eli

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Is file.readlines(sizehint=N) broken on 2.7?
by Giampaolo Rodolà April 5, 2013

April 5, 2013

with open('test-xxx', 'w') as f: f.write('aaa\nbbb\nccc') with open('test-xxx', 'r') as f: print(f.readlines(1)) On Python 3.3 I get: ['aaa\n'] ...while on Python 2.7: ['aaa\n', 'bbb\n', 'ccc'] Is this a bug or I'm missing something? --- Giampaolo https://code.google.com/p/pyftpdlib/ https://code.google.com/p/psutil/ https://code.google.com/p/pysendfile/

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Summary of Python tracker Issues
by Python tracker April 5, 2013

April 5, 2013

ACTIVITY SUMMARY (2013-03-29 - 2013-04-05) 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 counts and deltas: open 3905 (+20) closed 25508 (+47) total 29413 (+67) Open issues with patches: 1729 Issues opened (48) ================== #17425: Update OpenSSL versions in Windows builds http://bugs.python.org/issue17425 reopened by pitrou #17574: pysetup failing with "OSError: [Errno 18] Invalid cross-device http://bugs.python.org/issue17574 opened by vaab #17575: HTTPConnection.send http://bugs.python.org/issue17575 opened by dspublic(a)freemail.hu #17576: PyNumber_Index() is not int-subclass friendly (or operator.ind http://bugs.python.org/issue17576 opened by barry #17577: Add lookahead/peek wrapper to itertools http://bugs.python.org/issue17577 opened by pconnell #17580: ctypes: ARM hardfloat argument corruption calling functions wi http://bugs.python.org/issue17580 opened by bivab #17582: xml.etree.ElementTree does not preserve whitespaces in attribu http://bugs.python.org/issue17582 opened by piro #17583: IDLE HOWTO http://bugs.python.org/issue17583 opened by Amit.Saha #17585: IDLE - regression with exit() and quit() http://bugs.python.org/issue17585 opened by roger.serwy #17588: runpy cannot run Unicode path on Windows http://bugs.python.org/issue17588 opened by Drekin #17589: Make documentation about macros in C API explicit about rvalu http://bugs.python.org/issue17589 opened by larry #17590: mingw: translate gcc internal defines to python platform speci http://bugs.python.org/issue17590 opened by rpetrov #17592: mingw: configure MACHDEP and platform for build http://bugs.python.org/issue17592 opened by rpetrov #17593: mailbox.py tries to link even on filesystem wihch does not sup http://bugs.python.org/issue17593 opened by dominik-stadler #17594: mingw: preset configure defaults http://bugs.python.org/issue17594 opened by rpetrov #17595: mingw: configure largefile support for windows builds http://bugs.python.org/issue17595 opened by rpetrov #17596: mingw: add wincrypt.h in Python/random.c http://bugs.python.org/issue17596 opened by rpetrov #17597: mingw: add $srcdir/PC to CPPFLAGS http://bugs.python.org/issue17597 opened by rpetrov #17598: mingw: init system calls http://bugs.python.org/issue17598 opened by rpetrov #17599: mingw: detect REPARSE_DATA_BUFFER http://bugs.python.org/issue17599 opened by rpetrov #17600: mingw: build-in windows modules (winreg) http://bugs.python.org/issue17600 opened by rpetrov #17601: mingw: determine if pwdmodule should be used http://bugs.python.org/issue17601 opened by rpetrov #17602: mingw: default sys.path calculations for windows platforms http://bugs.python.org/issue17602 opened by rpetrov #17603: AC_LIBOBJ replacement of fileblocks http://bugs.python.org/issue17603 opened by rpetrov #17604: mingw: use main() to start execution http://bugs.python.org/issue17604 opened by rpetrov #17605: mingw-meta: build interpeter core http://bugs.python.org/issue17605 opened by rpetrov #17606: xml.sax.saxutils.XMLGenerator cannot output with the correct e http://bugs.python.org/issue17606 opened by neoecos #17607: missed peephole optimization (unnecessary jump at end of funct http://bugs.python.org/issue17607 opened by Neal.Norwitz #17611: Move unwinding of stack for "pseudo exceptions" from interpret http://bugs.python.org/issue17611 opened by Mark.Shannon #17612: hooks/mail.py requires [smtp] host to be set, despite a commen http://bugs.python.org/issue17612 opened by eric.smith #17613: IDLE "AttributeError: 'NoneType' object has no attribute 'inde http://bugs.python.org/issue17613 opened by rhettinger #17615: String comparison performance regression http://bugs.python.org/issue17615 opened by Neil.Hodgson #17616: wave.Wave_read and wave.Wave_write can be context managers http://bugs.python.org/issue17616 opened by Claudiu.Popa #17618: base85 encoding http://bugs.python.org/issue17618 opened by pitrou #17620: Python interactive console doesn't use sys.stdin for input http://bugs.python.org/issue17620 opened by Drekin #17621: Create a lazy import loader mixin http://bugs.python.org/issue17621 opened by brett.cannon #17626: set's __isub__ doesn't support non-sets. http://bugs.python.org/issue17626 opened by Roy.Wellington #17627: Datetime and time doesn't update timezone in a running Win app http://bugs.python.org/issue17627 opened by cm #17628: str==str: compare the first and last character before calling http://bugs.python.org/issue17628 opened by haypo #17630: Create a pure Python zipfile importer http://bugs.python.org/issue17630 opened by brett.cannon #17631: inspect getsource does not display full text of lambda http://bugs.python.org/issue17631 opened by Alexey.Spiridonov #17633: zipimport's handling of namespace packages is incorrect http://bugs.python.org/issue17633 opened by pconnell #17634: Win32: shutil.copy leaks file handles to child processes http://bugs.python.org/issue17634 opened by akrpic77 #17635: Doc of multiprocessing.connection mentions answerChallenge ins http://bugs.python.org/issue17635 opened by Antony.Lee #17636: Modify IMPORT_FROM to fallback on sys.modules http://bugs.python.org/issue17636 opened by brett.cannon #17637: Mention "What's New" in devguide's patch guidelines http://bugs.python.org/issue17637 opened by brett.cannon #17638: test_ssl failure http://bugs.python.org/issue17638 opened by neologix #17640: from distutils.util import byte_compile hangs http://bugs.python.org/issue17640 opened by Dmitry.Sivachenko Most recent 15 issues with no replies (15) ========================================== #17640: from distutils.util import byte_compile hangs http://bugs.python.org/issue17640 #17635: Doc of multiprocessing.connection mentions answerChallenge ins http://bugs.python.org/issue17635 #17631: inspect getsource does not display full text of lambda http://bugs.python.org/issue17631 #17621: Create a lazy import loader mixin http://bugs.python.org/issue17621 #17620: Python interactive console doesn't use sys.stdin for input http://bugs.python.org/issue17620 #17618: base85 encoding http://bugs.python.org/issue17618 #17616: wave.Wave_read and wave.Wave_write can be context managers http://bugs.python.org/issue17616 #17604: mingw: use main() to start execution http://bugs.python.org/issue17604 #17603: AC_LIBOBJ replacement of fileblocks http://bugs.python.org/issue17603 #17602: mingw: default sys.path calculations for windows platforms http://bugs.python.org/issue17602 #17601: mingw: determine if pwdmodule should be used http://bugs.python.org/issue17601 #17600: mingw: build-in windows modules (winreg) http://bugs.python.org/issue17600 #17599: mingw: detect REPARSE_DATA_BUFFER http://bugs.python.org/issue17599 #17598: mingw: init system calls http://bugs.python.org/issue17598 #17597: mingw: add $srcdir/PC to CPPFLAGS http://bugs.python.org/issue17597 Most recent 15 issues waiting for review (15) ============================================= #17633: zipimport's handling of namespace packages is incorrect http://bugs.python.org/issue17633 #17628: str==str: compare the first and last character before calling http://bugs.python.org/issue17628 #17616: wave.Wave_read and wave.Wave_write can be context managers http://bugs.python.org/issue17616 #17613: IDLE "AttributeError: 'NoneType' object has no attribute 'inde http://bugs.python.org/issue17613 #17611: Move unwinding of stack for "pseudo exceptions" from interpret http://bugs.python.org/issue17611 #17606: xml.sax.saxutils.XMLGenerator cannot output with the correct e http://bugs.python.org/issue17606 #17604: mingw: use main() to start execution http://bugs.python.org/issue17604 #17603: AC_LIBOBJ replacement of fileblocks http://bugs.python.org/issue17603 #17602: mingw: default sys.path calculations for windows platforms http://bugs.python.org/issue17602 #17601: mingw: determine if pwdmodule should be used http://bugs.python.org/issue17601 #17600: mingw: build-in windows modules (winreg) http://bugs.python.org/issue17600 #17599: mingw: detect REPARSE_DATA_BUFFER http://bugs.python.org/issue17599 #17598: mingw: init system calls http://bugs.python.org/issue17598 #17597: mingw: add $srcdir/PC to CPPFLAGS http://bugs.python.org/issue17597 #17596: mingw: add wincrypt.h in Python/random.c http://bugs.python.org/issue17596 Top 10 most discussed issues (10) ================================= #17583: IDLE HOWTO http://bugs.python.org/issue17583 15 msgs #17613: IDLE "AttributeError: 'NoneType' object has no attribute 'inde http://bugs.python.org/issue17613 15 msgs #6743: Add function compatible with print to pprint module http://bugs.python.org/issue6743 11 msgs #14146: IDLE: source line in editor doesn't highlight when debugging http://bugs.python.org/issue14146 10 msgs #17585: IDLE - regression with exit() and quit() http://bugs.python.org/issue17585 10 msgs #17615: String comparison performance regression http://bugs.python.org/issue17615 10 msgs #17628: str==str: compare the first and last character before calling http://bugs.python.org/issue17628 10 msgs #17546: Document the circumstances where the locals() dict get updated http://bugs.python.org/issue17546 9 msgs #17611: Move unwinding of stack for "pseudo exceptions" from interpret http://bugs.python.org/issue17611 9 msgs #17206: Py_XDECREF() expands its argument multiple times http://bugs.python.org/issue17206 7 msgs Issues closed (47) ================== #1274: doctest fails to run file based tests with 8bit paths http://bugs.python.org/issue1274 closed by terry.reedy #6419: Broken test_kqueue.py on OpenBSD http://bugs.python.org/issue6419 closed by neologix #6649: idlelib/rpc.py missing exit status on exithook http://bugs.python.org/issue6649 closed by roger.serwy #6698: IDLE no longer opens only an edit window when configured to do http://bugs.python.org/issue6698 closed by roger.serwy #6822: Error calling .storlines from ftplib http://bugs.python.org/issue6822 closed by python-dev #8900: IDLE crashes when using keyboard shortcuts to open a file. http://bugs.python.org/issue8900 closed by roger.serwy #8913: Document that datetime.__format__ is datetime.strftime http://bugs.python.org/issue8913 closed by ezio.melotti #10044: small int optimization http://bugs.python.org/issue10044 closed by mark.dickinson #13163: `port` and `host` are confused in `_get_socket http://bugs.python.org/issue13163 closed by r.david.murray #13271: When -h is used with argparse, default values that fail should http://bugs.python.org/issue13271 closed by Joshua.Chia #14135: check for locale changes in test.regrtest http://bugs.python.org/issue14135 closed by brett.cannon #14254: IDLE - shell restart or closing during readline does not exit http://bugs.python.org/issue14254 closed by roger.serwy #15940: Time module: effect of locale http://bugs.python.org/issue15940 closed by terry.reedy #16757: Faster _PyUnicode_FindMaxChar() http://bugs.python.org/issue16757 closed by python-dev #17357: Add missing verbosity message to importlib http://bugs.python.org/issue17357 closed by brett.cannon #17365: Remove Python 2 code from test_print http://bugs.python.org/issue17365 closed by asvetlov #17435: threading.Timer.__init__() should use immutable argument defau http://bugs.python.org/issue17435 closed by r.david.murray #17483: Can not tell urlopen not to check the hostname for https conne http://bugs.python.org/issue17483 closed by pitrou #17492: Increase test coverage for random (up to 99%) http://bugs.python.org/issue17492 closed by r.david.murray #17526: inspect.findsource raises undocumented error for code objects http://bugs.python.org/issue17526 closed by ezio.melotti #17533: test_xpickle fails with "cannot import name precisionbigmemtes http://bugs.python.org/issue17533 closed by python-dev #17539: Use the builtins module in the unittest.mock.patch example http://bugs.python.org/issue17539 closed by ezio.melotti #17540: logging formatter support 'style' key in dictionary config http://bugs.python.org/issue17540 closed by python-dev #17549: Some exceptions not highlighted in exceptions documentation. http://bugs.python.org/issue17549 closed by ezio.melotti #17568: re: Infinite loop with repeated empty alternative http://bugs.python.org/issue17568 closed by ezio.melotti #17572: strptime exception context http://bugs.python.org/issue17572 closed by ezio.melotti #17578: Update devguide for 3.2 in security-fix-only mode http://bugs.python.org/issue17578 closed by ned.deily #17579: socket module in 2.7.4 raises error instead of gaierror in 2.7 http://bugs.python.org/issue17579 closed by barry #17581: _ssl fails building on OS X Tiger http://bugs.python.org/issue17581 closed by pitrou #17584: collections.Iterator __subclasshook__ does not check if next() http://bugs.python.org/issue17584 closed by rhettinger #17586: fix typo in contextlib.rst http://bugs.python.org/issue17586 closed by ned.deily #17587: Have all core library modules imported by default http://bugs.python.org/issue17587 closed by r.david.murray #17591: mingw: use header in lowercase http://bugs.python.org/issue17591 closed by pitrou #17608: configparser not honouring section but not variable case http://bugs.python.org/issue17608 closed by lukasz.langa #17609: IDLE: Remove config option 'editor on startup' and utilize com http://bugs.python.org/issue17609 closed by Todd.Rovito #17610: Qsort function misuse in typeobject.c http://bugs.python.org/issue17610 closed by python-dev #17614: IDLE - quickly closing a large file triggers a traceback http://bugs.python.org/issue17614 closed by roger.serwy #17617: struct.calcsize() incorrect http://bugs.python.org/issue17617 closed by mark.dickinson #17619: MS WINDOWS: input() swallows KeyboardInterrupt in Python 3.3 http://bugs.python.org/issue17619 closed by sbt #17622: Python sets wrong pid in window properties http://bugs.python.org/issue17622 closed by r.david.murray #17623: Typo in Doc/whatsnew/3.3.rst http://bugs.python.org/issue17623 closed by r.david.murray #17624: Confusing TypeError in urllib.urlopen http://bugs.python.org/issue17624 closed by r.david.murray #17625: IDLE regression -- Search and Replace Window doesn't automatic http://bugs.python.org/issue17625 closed by python-dev #17629: Expose string width to Python http://bugs.python.org/issue17629 closed by benjamin.peterson #17632: IDLE: Add clear-window option to the Shell menu. http://bugs.python.org/issue17632 closed by roger.serwy #17639: symlinking .py files creates unexpected sys.path http://bugs.python.org/issue17639 closed by gvanrossum #1387483: sys.path[0] when executed thru a symbolic link http://bugs.python.org/issue1387483 closed by kristjan.jonsson

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Slides from today's parallel/async Python talk
by Trent Nelson April 5, 2013

April 5, 2013

Just posted the slides for those that didn't have the benefit of attending the language summit today: https://speakerdeck.com/trent/parallelizing-the-python-interpreter-an-alter… Trent.

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relative import circular problem
by Kristján Valur Jónsson April 5, 2013

April 5, 2013

I just ran into the issue described in http://stackoverflow.com/questions/6351805/cyclic-module-dependencies-and-r…. This is unfortunate, because we have been trying to move towards relative imports in order to aid flexibility in package and library design. The relative import syntax (from foo import bar) is a getattr type of lookup (i.e. import foo, then get attr from it). This is in contrast with absolute import import foo.bar (get the module foo.bar from sys.modules or import it) bar = foo.bar the latter works with partially initialized modules, but not the former, rendering two sibling modules unable to import each other using the relative syntax. as far as I know, relative imports are only supported using the former (import from) syntax. Are there any plans to alleviate this by allowing proper relative imports? After all, relative imports and packages go hand in hand. K

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Are undocumented exceptions considered bugs?
by Stefan Bucur April 3, 2013

April 3, 2013

Hi, I'm not sure this is the right place to ask this question, but I thought I'd give it a shot since it also concerns the Python standard library. I'm writing an automated test case generation tool for Python programs that explores all possible execution paths through a program. When applying this tool on Python's 2.7.3 urllib package, it discovered input strings for which the urllib.urlopen(url) call would raise a TypeError. For instance: urllib.urlopen('\x00\x00\x00') [...] File "/home/bucur/onion/python-bin/lib/python2.7/urllib.py", line 86, in urlopen return opener.open(url) File "/home/bucur/onion/python-bin/lib/python2.7/urllib.py", line 207, in open return getattr(self, name)(url) File "/home/bucur/onion/python-bin/lib/python2.7/urllib.py", line 462, in open_file return self.open_local_file(url) File "/home/bucur/onion/python-bin/lib/python2.7/urllib.py", line 474, in open_local_file stats = os.stat(localname) TypeError: must be encoded string without NULL bytes, not str In the urllib documentation it is only mentioned that the IOError is raised when the connection cannot be established. Since the input passed is a string (and not some other type), is the TypeError considered a bug (either in the documentation, or in the implementation)? Thanks a lot, Stefan

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could gevent be apart the standard Python library in future ?
by iMath April 3, 2013

April 3, 2013

Hi, It will be my first post here. could gevent be apart the standard Python library in future ?

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Re: [Python-Dev] [Python-checkins] cpython (3.3): Whatsnew typo
by Eric V. Smith April 3, 2013

April 3, 2013

On 10/3/2012 8:59 PM, jesus.cea wrote: > > -Solaris and derived platforms have a new class :class:`select.devpoll` > -for high performance asyncronous sockets via :file:`/dev/poll`. > +Solaris and derivatives platforms have a new class :class:`select.devpoll` > +for high performance asynchronous sockets via :file:`/dev/poll`. That should be "Solaris and derivative platforms ...".

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What code in Python creates .exe launchers for 'entry_points' in 'setup.py'?
by Grigory Petrov April 2, 2013

April 2, 2013

Hello. On Windows, 'setuptools' and 'distribute' package systems allows to add 'entry_points' definition into 'setup.py' python distribution script. For each entry in this definition, some kind of bootstrapper '.exe' file will be created and placed into 'Scripts' python dir. For example, if i install 'pip' via 'setup.py', a file named 'pip.exe' will be created and placed into 'C:\Python27\Scripts'. But what python code is responsible for creation of this bootstrapper executables? I have searched python 2.7.3 source code for some time, but can't find a place. Of course i can spend lots of time to debug 'setup.py' installation (really lots of source code), but maybe someone just knows the place and can pinpoint it?

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