Mailman 3 February 2011 - Python-Dev

Re: [Python-Dev] [Python-checkins] devguide: Describe the Rdiff extension for remote diffs
by Nick Coghlan 06 Feb '11

06 Feb '11

On Sun, Feb 6, 2011 at 4:26 PM, nick.coghlan <python-checkins(a)python.org> wrote: > +How do I compare my working copy to a remote repository? > +------------------------------------------------------------------------------- To save anyone else pointing this out, I'm now aware that "hg incoming" and "hg outgoing" are the actual commands I want. Still, that kind of mistake is why I want to keep the dev FAQ around - to help people that don't know enough to avoid the misleading answers a web search will sometimes give back. Cheers, Nick. -- Nick Coghlan | ncoghlan(a)gmail.com | Brisbane, Australia

2 2

Test - Are there problems with the list?
by Paul Moore 05 Feb '11

05 Feb '11

I've not seen any python-dev mails for a day or so. Is there a problem with the list? Paul.

2 1

Summary of Python tracker Issues
by Python tracker 04 Feb '11

04 Feb '11

ACTIVITY SUMMARY (2011-01-28 - 2011-02-04) 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 2585 (+18) closed 20314 (+52) total 22899 (+70) Open issues with patches: 1102 Issues opened (49) ================== #10918: **kwargs unnecessarily restricted in concurrent.futures 'submi http://bugs.python.org/issue10918 reopened by bquinlan #11023: pep 227 missing text http://bugs.python.org/issue11023 reopened by r.david.murray #11048: "import ctypes" causes segfault on read-only filesystem http://bugs.python.org/issue11048 opened by Arach #11049: add tests for test.support http://bugs.python.org/issue11049 opened by brett.cannon #11050: email.utils.getaddresses behavior contradicts RFC2822 http://bugs.python.org/issue11050 opened by Ivan.Egorov #11051: system calls per import http://bugs.python.org/issue11051 opened by pitrou #11055: OS X IDLE 3.2 Save As menu accelerator opens two Save windows http://bugs.python.org/issue11055 opened by ned.deily #11056: 2to3 fails for inner __metaclass__ class definition http://bugs.python.org/issue11056 opened by nw #11062: mailbox fails to round-trip a file to a Babyl mailbox http://bugs.python.org/issue11062 opened by r.david.murray #11063: uuid.py module import has heavy side effects http://bugs.python.org/issue11063 opened by Keith.Dart #11067: Py_LIMITED_API breaks most PySomething_Check() functions http://bugs.python.org/issue11067 opened by petere #11071: What's New review comments http://bugs.python.org/issue11071 opened by ncoghlan #11072: Add MLSD command support to ftplib http://bugs.python.org/issue11072 opened by giampaolo.rodola #11074: fix tokenize so it can be reloaded http://bugs.python.org/issue11074 opened by brett.cannon #11076: Iterable argparse Namespace http://bugs.python.org/issue11076 opened by vdupras #11077: Tkinter is not thread safe http://bugs.python.org/issue11077 opened by PythonInTheGrass #11078: Have test___all__ check for duplicates http://bugs.python.org/issue11078 opened by r.david.murray #11079: Make OS X entry in Applications like that in Windows http://bugs.python.org/issue11079 opened by rhettinger #11085: expose _abcoll as collections.abc http://bugs.python.org/issue11085 opened by rhettinger #11086: add lib2to3/__main__.py http://bugs.python.org/issue11086 opened by brett.cannon #11087: Speeding up the interpreter with a few lines of code http://bugs.python.org/issue11087 opened by jneb #11088: IDLE on OS X with Cocoa Tk 8.5 can hang waiting on input / raw http://bugs.python.org/issue11088 opened by ned.deily #11089: ConfigParser 50x slower in 2.7 http://bugs.python.org/issue11089 opened by vlachoudis #11090: Doc errors for unittest in Python 3.1 http://bugs.python.org/issue11090 opened by michael.foord #11092: Setup.cfg isn't packaged when running sdist http://bugs.python.org/issue11092 opened by Julien.Miotte #11093: test_future - rename not-unittest files to make regrtest.NOTTE http://bugs.python.org/issue11093 opened by sandro.tosi #11096: Multiple turtle tracers http://bugs.python.org/issue11096 opened by amcnerney13 #11097: MSI: Remove win32com dependency from installer generator http://bugs.python.org/issue11097 opened by techtonik #11100: test_fdopen: close failed in file object destructor http://bugs.python.org/issue11100 opened by ekrauss #11101: plistlib has no graceful way of handing None values http://bugs.python.org/issue11101 opened by bobveznat #11102: configure doesn't find "major()" on HP-UX v11.31 http://bugs.python.org/issue11102 opened by Oren_Held #11103: Python 3.2 installer doesn't register file extensions on Windo http://bugs.python.org/issue11103 opened by darren #11104: distutils sdist ignores MANIFEST http://bugs.python.org/issue11104 opened by jdennis #11105: Compiling evil ast crashes interpreter http://bugs.python.org/issue11105 opened by benjamin.peterson #11107: Cache constant "slice" instances http://bugs.python.org/issue11107 opened by scoder #11109: socketserver.ForkingMixIn leaves zombies http://bugs.python.org/issue11109 opened by jwark #11110: Py_DECREF->Py_XDECREF in Module/_sqlite/module.c http://bugs.python.org/issue11110 opened by brett.cannon #11112: UDPTimeoutTest derives from SocketTCPTest http://bugs.python.org/issue11112 opened by rmtew #11113: html.entities mapping dicts need updating? http://bugs.python.org/issue11113 opened by Brian.Jones #11114: TextIOWrapper.tell extremely slow http://bugs.python.org/issue11114 opened by Laurens #11116: mailbox and email errors http://bugs.python.org/issue11116 opened by sdaoden #11117: Implementing Async IO http://bugs.python.org/issue11117 opened by jcea #1103350: send/recv SEGMENT_SIZE should be used more in socketmodule http://bugs.python.org/issue1103350 reopened by r.david.murray #11060: distutils2 sdist does not complain about version that is not P http://bugs.python.org/issue11060 opened by gotcha #11061: Verify command option before parsing config file http://bugs.python.org/issue11061 opened by sdouche #11066: cgi.py proposals : sys.stdout encoding + rewriting of parsing http://bugs.python.org/issue11066 opened by quentel #11082: ValueError: Content-Length should be specified http://bugs.python.org/issue11082 opened by William.Wu #11084: Serialization of decimal.Decimal to XML-RPC http://bugs.python.org/issue11084 opened by gdr #1252236: Simplying Tkinter's event loop http://bugs.python.org/issue1252236 reopened by belopolsky Most recent 15 issues with no replies (15) ========================================== #11109: socketserver.ForkingMixIn leaves zombies http://bugs.python.org/issue11109 #11101: plistlib has no graceful way of handing None values http://bugs.python.org/issue11101 #11100: test_fdopen: close failed in file object destructor http://bugs.python.org/issue11100 #11097: MSI: Remove win32com dependency from installer generator http://bugs.python.org/issue11097 #11093: test_future - rename not-unittest files to make regrtest.NOTTE http://bugs.python.org/issue11093 #11088: IDLE on OS X with Cocoa Tk 8.5 can hang waiting on input / raw http://bugs.python.org/issue11088 #11074: fix tokenize so it can be reloaded http://bugs.python.org/issue11074 #11072: Add MLSD command support to ftplib http://bugs.python.org/issue11072 #11066: cgi.py proposals : sys.stdout encoding + rewriting of parsing http://bugs.python.org/issue11066 #11063: uuid.py module import has heavy side effects http://bugs.python.org/issue11063 #11062: mailbox fails to round-trip a file to a Babyl mailbox http://bugs.python.org/issue11062 #11060: distutils2 sdist does not complain about version that is not P http://bugs.python.org/issue11060 #11056: 2to3 fails for inner __metaclass__ class definition http://bugs.python.org/issue11056 #11055: OS X IDLE 3.2 Save As menu accelerator opens two Save windows http://bugs.python.org/issue11055 #11050: email.utils.getaddresses behavior contradicts RFC2822 http://bugs.python.org/issue11050 Most recent 15 issues waiting for review (15) ============================================= #11116: mailbox and email errors http://bugs.python.org/issue11116 #11110: Py_DECREF->Py_XDECREF in Module/_sqlite/module.c http://bugs.python.org/issue11110 #11109: socketserver.ForkingMixIn leaves zombies http://bugs.python.org/issue11109 #11104: distutils sdist ignores MANIFEST http://bugs.python.org/issue11104 #11102: configure doesn't find "major()" on HP-UX v11.31 http://bugs.python.org/issue11102 #11101: plistlib has no graceful way of handing None values http://bugs.python.org/issue11101 #11093: test_future - rename not-unittest files to make regrtest.NOTTE http://bugs.python.org/issue11093 #11090: Doc errors for unittest in Python 3.1 http://bugs.python.org/issue11090 #11089: ConfigParser 50x slower in 2.7 http://bugs.python.org/issue11089 #11086: add lib2to3/__main__.py http://bugs.python.org/issue11086 #11082: ValueError: Content-Length should be specified http://bugs.python.org/issue11082 #11079: Make OS X entry in Applications like that in Windows http://bugs.python.org/issue11079 #11078: Have test___all__ check for duplicates http://bugs.python.org/issue11078 #11076: Iterable argparse Namespace http://bugs.python.org/issue11076 #11074: fix tokenize so it can be reloaded http://bugs.python.org/issue11074 Top 10 most discussed issues (10) ================================= #11071: What's New review comments http://bugs.python.org/issue11071 20 msgs #10845: test_multiprocessing failure under Windows http://bugs.python.org/issue10845 12 msgs #7111: abort when stderr is closed http://bugs.python.org/issue7111 11 msgs #10227: Improve performance of MemoryView slicing http://bugs.python.org/issue10227 11 msgs #11114: TextIOWrapper.tell extremely slow http://bugs.python.org/issue11114 9 msgs #11082: ValueError: Content-Length should be specified http://bugs.python.org/issue11082 9 msgs #8914: Run clang's static analyzer http://bugs.python.org/issue8914 8 msgs #11037: State of PEP 382 or How does distutils2 handle namespaces? http://bugs.python.org/issue11037 8 msgs #11024: imaplib: Time2Internaldate() returns localized strings http://bugs.python.org/issue11024 8 msgs #2193: Cookie Colon Name Bug http://bugs.python.org/issue2193 7 msgs Issues closed (53) ================== #6045: Add more dict methods to dbm interfaces http://bugs.python.org/issue6045 closed by eric.araujo #6465: email.feedparser regular expression bug (NLCRE_crack) http://bugs.python.org/issue6465 closed by sandro.tosi #7074: Turtle module crashes python http://bugs.python.org/issue7074 closed by belopolsky #8275: callback function on win64 results in bad behavior. mem corrup http://bugs.python.org/issue8275 closed by pitrou #9124: Mailbox module should use binary I/O, not text I/O http://bugs.python.org/issue9124 closed by r.david.murray #9127: subprocess.Popen.communicate() and SIGCHLD handlers http://bugs.python.org/issue9127 closed by ned.deily #9418: Move _formatter_* methods from string type into _string module http://bugs.python.org/issue9418 closed by eric.smith #9763: Crashes upon run after syntax error encountered in OSX 10.5.8 http://bugs.python.org/issue9763 closed by ned.deily #9884: The 4th parameter of method always None or 0 on x64 Windows. http://bugs.python.org/issue9884 closed by owenl #10480: cgi.py should document the need for binary stdin/stdout http://bugs.python.org/issue10480 closed by v+python #10573: Consistency in unittest assert methods: order of actual, expec http://bugs.python.org/issue10573 closed by michael.foord #10847: Distutils drops -fno-strict-aliasing when CFLAGS are set http://bugs.python.org/issue10847 closed by eric.araujo #10939: imaplib: Internaldate2tuple raises KeyError parsing month and http://bugs.python.org/issue10939 closed by belopolsky #10940: IDLE 3.2 hangs with Cmd-M hotkey on OS X 10.6 with 64-bit inst http://bugs.python.org/issue10940 closed by ned.deily #10961: Pydoc touchups in new browser for 3.2 http://bugs.python.org/issue10961 closed by georg.brandl #10989: ssl.SSLContext(True).load_verify_locations(None, True) segfaul http://bugs.python.org/issue10989 closed by haypo #11025: Distutils2 install command without setup.py or setup.cfg creat http://bugs.python.org/issue11025 closed by eric.araujo #11032: _string: formatter_field_name_split() and formatter_parser() d http://bugs.python.org/issue11032 closed by eric.smith #11035: Segmentation fault http://bugs.python.org/issue11035 closed by brett.cannon #11038: Some commands should stop if Name and Version are missing http://bugs.python.org/issue11038 closed by eric.araujo #11040: After registering a project to PyPI, classifiers fields aren't http://bugs.python.org/issue11040 closed by eric.araujo #11042: [PyPI CSS] Adding project urls onto a project page using regis http://bugs.python.org/issue11042 closed by eric.araujo #11043: On GNU/Linux (Ubuntu) distutils2.mkcfg shouldn't create an exe http://bugs.python.org/issue11043 closed by eric.araujo #11044: The description-file isn't handled by distutils2 http://bugs.python.org/issue11044 closed by Julien.Miotte #11052: Fix OS X IDLE menu accelerators for Save As and Save Copy http://bugs.python.org/issue11052 closed by ned.deily #11053: OS X IDLE 3 with Tk 8.4 appears to hang with syntax error http://bugs.python.org/issue11053 closed by ned.deily #11054: OS X installer build script for 3.2 can no longer build with s http://bugs.python.org/issue11054 closed by ned.deily #11057: Missing import of DistutilsOptionError http://bugs.python.org/issue11057 closed by eric.araujo #11064: abc documentation version conflict http://bugs.python.org/issue11064 closed by dustin.farris #11065: Fatal "can't locate locale" errors when zip file with director http://bugs.python.org/issue11065 closed by ned.deily #11068: Python 2.7.1 Idle traceback on OS X (10.6.6) http://bugs.python.org/issue11068 closed by r.david.murray #11069: IDLE crashes when Stack Viewer opened http://bugs.python.org/issue11069 closed by georg.brandl #11070: test_capi crashes and fails http://bugs.python.org/issue11070 closed by brian.curtin #11073: threading.Thread documentation can be improved http://bugs.python.org/issue11073 closed by pitrou #11075: Using Turtle with IDLE on Mac OS X http://bugs.python.org/issue11075 closed by amcnerney13 #11080: Win32Serial.read coding error for non-blocking read http://bugs.python.org/issue11080 closed by brian.curtin #11081: from struct import * misses pack_into http://bugs.python.org/issue11081 closed by belopolsky #11083: threading.Thread - start() rises RuntimeException? http://bugs.python.org/issue11083 closed by brian.curtin #11091: Bug with reimport in pkg_resources http://bugs.python.org/issue11091 closed by brett.cannon #11094: Runtime error http://bugs.python.org/issue11094 closed by amaury.forgeotdarc #11095: subprocess popen broken for bytes and backslash http://bugs.python.org/issue11095 closed by eric.smith #11098: syntax error at end of line in interactive python -u http://bugs.python.org/issue11098 closed by r.david.murray #11099: Bytes pickled with 3.1 not unpickled with 2.7 correctly http://bugs.python.org/issue11099 closed by r.david.murray #11106: python 2.6.6 and python 2.7.1 cannot be built successfully bec http://bugs.python.org/issue11106 closed by skrah #11108: Intermittent AttributeError when using time.strptime in thread http://bugs.python.org/issue11108 closed by amaury.forgeotdarc #11111: See "Gmail" on your Google homepage http://bugs.python.org/issue11111 closed by belopolsky #11115: csv readers and writers should be context managers http://bugs.python.org/issue11115 closed by r.david.murray #1613479: pydoc info for a package doesn't list all package contents http://bugs.python.org/issue1613479 closed by eric.araujo #10947: imaplib: Internaldate2tuple and ParseFlags require (and latter http://bugs.python.org/issue10947 closed by lavajoe #11036: Allow multiple files in the description-file metadata http://bugs.python.org/issue11036 closed by eric.araujo #11058: dist directory not created when running sdist command http://bugs.python.org/issue11058 closed by kelseyhightower #11059: Mercurial fails on code.python.org repo http://bugs.python.org/issue11059 closed by sdaoden #1647654: No obvious and correct way to get the time zone offset http://bugs.python.org/issue1647654 closed by belopolsky

1 0

Support for async read/write
by Jesus Cea 04 Feb '11

04 Feb '11

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Current Python lacks support for "aio_*" syscalls to do async IO. I think this could be a nice addition for python 3.3. If you agree, I will create an issue in the tracker. If you think the idea is of no value, please say so for me to move on. Maybe an 3th party module, but I think this functionality sould be available in core python. Thanks!. PS: The function calls are: aio_cancel, aio_error, aio_fsync, aio_read, aio_return, aio_write. - -- Jesus Cea Avion _/_/ _/_/_/ _/_/_/ jcea(a)jcea.es - http://www.jcea.es/ _/_/ _/_/ _/_/ _/_/ _/_/ jabber / xmpp:jcea@jabber.org _/_/ _/_/ _/_/_/_/_/ . _/_/ _/_/ _/_/ _/_/ _/_/ "Things are not so easy" _/_/ _/_/ _/_/ _/_/ _/_/ _/_/ "My name is Dump, Core Dump" _/_/_/ _/_/_/ _/_/ _/_/ "El amor es poner tu felicidad en la felicidad de otro" - Leibniz -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iQCVAwUBTL3MUplgi5GaxT1NAQKv5QQAnDan88kXJ67fucz2rT/mZze+065lm9E4 +XJ2JfqGMVE1/qMsXwg81l19RHSYReBgBjd7zyXWE9Fk/1Rfq4gjOZEtoG0IpGZG E3CH+Ab5/o/PjJZNKQaPpe0cwGSXFPKkPpgepKS1d8ZXyf6VXMc8UTSWjMI5jIVe 4M+yvw5m4I0= =nsdO -----END PGP SIGNATURE-----

9 17

Issue #11051: system calls per import
by Victor Stinner 03 Feb '11

03 Feb '11

Hi, Antoine Pitrou noticed that Python 3.2 tries a lot of filenames to load a module: http://bugs.python.org/issue11051 Python 3.1 does already test many filenames, but with Python 3.2, it is even worse. For each directory in sys.path, it tries 9 suffixes: '', '.cpython-32m.so', 'module.cpython-32m.so', '.abi3.so', 'module.abi3.so', '.so', 'module.so', '.py', '.pyc'. I don't understand why it tests so much .so suffixes. And why it does test with and without "module". Victor

13 17

Re: [Python-Dev] [Python-checkins] r88331 - in python/branches/py3k/Doc/howto: index.rst pyporting.rst
by Nick Coghlan 03 Feb '11

03 Feb '11

On Fri, Feb 4, 2011 at 8:01 AM, brett.cannon <python-checkins(a)python.org> wrote: > +Stop Using :mod:`doctest` > +''''''''''''''''''''''''' > +While 2to3 tries to port doctests properly, it's a rather tough thing to do. It > +is probably best to simply convert your critical doctests to :mod:`unittest`. This advice strikes me as being *way* too strong. Perhaps something like: Consider limiting use of :mod:`doctest` =============================== While 2to3 tries to port doctests properly, it's a rather tough thing to do. If your test suite is heavily doctest dependent, then you may end up spending a lot of time manually fixing doctests. The two major avenues for dealing with this are to either port doctest based tests over to the unittest module (making them significantly easier for 2to3 to handle) or else to follow the guidelines below for writing 2/3 compatible source code in all doctests (making it so they should run unmodified on both Python versions). Cheers, Nick. -- Nick Coghlan | ncoghlan(a)gmail.com | Brisbane, Australia

2 1

Re: [Python-Dev] [Python-checkins] r88331 - in python/branches/py3k/Doc/howto: index.rst pyporting.rst
by Nick Coghlan 03 Feb '11

03 Feb '11

On Fri, Feb 4, 2011 at 8:01 AM, brett.cannon <python-checkins(a)python.org> wrote: > +Capturing the Currently Raised Exception > +---------------------------------------- > +One change between Python 2 and 3 that will require changing how you code is > +accessing the currently raised exception. In Python 2 the syntax to access the > +current exception is:: > + > + try: > + raise Exception() > + except Exception, exc: > + # Current exception is 'exc' > + pass > + > +This syntax changed in Python 3 to:: > + > + try: > + raise Exception() > + except Exception as exc: > + # Current exception is 'exc' > + pass Note that you can write it the Python 3 way in 2.6+ as well (this was new syntax, so there weren't any backwards compatibility issues with adding it). You only need to do the sys.exc_info dance if you need to support 2.5 or earlier. Other notes: - explicit relative imports work in 2.6+ without needing a future import - absolute imports are the default in 2.7 Cheers, Nick. -- Nick Coghlan | ncoghlan(a)gmail.com | Brisbane, Australia

2 1

Py_tp_getset in ABI?
by Egon Smiwa 03 Feb '11

03 Feb '11

Hi all, I'm trying to convert my embedding code to your new ABI, but I cannot find the ABI slot for tp_getset in typeslots.h (while tp_methods are supported). Is the support of tp_getset not yet determined? (Because I cannot find this in the PEP 384) Thank you!

3 2

Python merge module
by Hoyt, David 03 Feb '11

03 Feb '11

Is there or will there be support for python merge modules so we can include python in our installer? Also, the discussions I saw about windows installers not removing the path on uninstall is completely false as regards the installers that wix creates, at least. I've modified the path many times and explicitly tested that it was removed on uninstall. I can't speak for the msilib package and what it does - perhaps it's doing the wrong thing? But has there been thought towards migrating away from msilib and using platform standard tools such as wix (used by ms office, visual studio, etc.)?

6 19

News of the faulthandler project
by Victor Stinner 03 Feb '11

03 Feb '11

Hi, Since the end of last december, I'm still working on my fault handler project: https://github.com/haypo/faulthandler You can use it to get more information after a crash or if you program hangs somewhere. It helps if you don't have access to other debugging tool (eg. install gdb7+python-gdb.py on Windows is not trivial today) or if you cannot interact with your program (eg. on a buildbot). The last version works on Python 2.5, 2.6, 2.7, 3.1 and 3.2, on Windows, Linux and FreeBSD. It can display the Python backtrace on a fatal fault (SIGSEGV, SIGFPE, SIGILL, SIGBUS), after a delay in seconds, when an user signal is received (eg. SIGUSR1) or explicitly (call directly the dumpbacktrace() function). By default, it is disabled: you have to call faulthandler.enable() to install the signal handlers. You can choose in which file the backtrace is written (sys.stderr by default) and if it displays the backtrace of the current thread or of all threads. If you use the delay: you can choose to repeat the operation (dump the backtrace each delay seconds). The project is now a module, so it is no more enabled by default. It is more configurable, and has more features. It has a better API (so it was a good idea to not include it in Python 3.2). I plan to integrate this project into Python 3.3. I hope that it can help to debug some buildbots issues, but also any segfault in your programs. Note: faulthandler.register() (dump the backtrace when an user signal is raised) is only available in the development version. -- The project is not perfect yet: - I have to write something to be able to enable the faulthandler before starting your program (write a program for that?) - faulthandler.dumpbacktrace_later() uses alarm() which interrupts the current system call when SIGALARM is raised: it may be a problem (it's maybe not a problem if you try to debug a program hang) - I don't know if something should be done on a fork() - SIGABRT is not handled - The module is unloaded using Py_AtExit(): it cannot release references because the unload function is called too late -- There are similar projects, tipper and crier, using a signal handler implemented in Python or a signal handler implemented in Python. These projects give more information (eg. local variables) and more control on how the informations are written, but I think that there are less reliable: it doesn't work if Python hangs (eg. deadlock) and signal handlers implemented in Python are asynchronous. And there are unable to catch fatal faults (eg. SIGSEGV). http://pypi.python.org/pypi/tipper/ https://gist.github.com/737056 Victor

4 4