Mailman 3 November 2013 - docs

Python on the Mac page needs an update
by Christian Clauss 06 Nov '13

06 Nov '13

http://www.python.org/download/mac Given that Mac OS X now ships with Python v2.7.5 by default on all Macs, the Python on the Mac page is in serous need of an update. That page currently mentions a lot of our of date Mac OS X releases (Panther, Leopard, etc.)

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Subprocess Crashes on OSX using wxpython GUI
by Shalin Shah 05 Nov '13

05 Nov '13

Hello, I have a GUI software in which I wanted to do some heavy tasks so I create new subprocesses to run those tasks. To do this I am using multiprocessing module and this works perfectly fine on windows as well as unix. However when I try the same for OSX 10.6 process crash occurs and I get a long error report which I cannot decipher. Here is something I used to make a sub-process :- p = multiprocessing.Process(target = encode.encode , args = (self.path,self.savePath,) , name = "Encode Process") p.start() temp = wx.ProgressDialog('Please wait...', 'Encoding the File....This may take several minutes....\n\t....so sit back and relax....',parent = self,style = wx.PD_APP_MODAL | wx.PD_CAN_ABORT) temp.SetSize((450,130))while len(multiprocessing.active_children()) != 0: time.sleep(0.1) if not temp.UpdatePulse("Encoding the File....This may take several minutes...\n\tso sit back and relax.....")[0]: p.terminate() terminated = True break temp.Destroy() p.join() p.terminate() Here is the crash report :- Path:/Library/Frameworks/Python.framework/Versions/2.7/Resources/Python.app/Contents/MacOS/PythonIdentifier: PythonVersion: ??? (???)Code Type: X86 (Native)Parent Process: Python [52639] Date/Time: 2013-07-23 12:22:46.170 +0530 OS Version: Mac OS X 10.6.7 (10J869)Report Version: 6 Interval Since Last Report: 14328 secCrashes Since Last Report: 9Per-App Crashes Since Last Report: 9Anonymous UUID: DE5488A5-8468-4937-800F-F898E4F09392 Exception Type: EXC_BAD_ACCESS (SIGSEGV)Exception Codes: KERN_INVALID_ADDRESS at 0x000000000d28e02eCrashed Thread: 0 Dispatch queue: com.apple.main-thread Application Specific Information:*** multi-threaded process forked *** Thread 0 Crashed: Dispatch queue: com.apple.main-thread0 ...ple.ApplicationServices.ATS 0x929b43a0 _eGetGlyphVectorIndex + 2191 ...ple.ApplicationServices.ATS 0x929bec46 OldGlyphsCacheRun(TStrike*, int, unsigned long, unsigned short const*, void (*)(unsigned long, unsigned short const*, unsigned long, unsigned char* const*, void const*), void*) + 3542 ...ple.ApplicationServices.ATS 0x929c2502 _eGCGetGlyphDeviceMetrics + 4753 ...ple.ApplicationServices.ATS 0x929c56fd GCGetGlyphDeviceMetrics + 1174 com.apple.QD 0x906cc386 GetLayoutDevMetricsGroup(ATSGlyphVector*, unsigned long, unsigned long, Rect*) + 11055 com.apple.QD 0x906ca6c9 MakeLayoutDeviceValues + 6166 com.apple.QD 0x906ca434 PositionDeviceGlyphs + 1367 com.apple.QD 0x906c87a7 TTextLineLayout::EnsureLayoutIsUpToDate(unsigned long, unsigned char, unsigned long, TATSUGlyphRecordArray**) + 5018 com.apple.QD 0x90747ebe TTextLineLayout::OffsetToPosition(unsigned long, unsigned char, unsigned short, ATSUCaret*, ATSUCaret*, unsigned char*) + 1689 com.apple.QD 0x90735ca5 ATSUOffsetToCursorPosition + 11710 com.apple.QD 0x90735cfc ATSUOffsetToPosition + 6111 com.apple.HIToolbox 0x957dea93 CUnicodeTextRun::CharacterToPixel(LineRunDisplayInfo const&, short, void*, void*) + 55112 com.apple.HIToolbox 0x957ef995 CLine::RunCharToPixel(LineRunInfo const*, long, unsigned char, ATSUCaret*, ATSUCaret*) + 8713 com.apple.HIToolbox 0x957eff7b CLine::CharacterToPixel(TCharOffset, char, ATSUCaret*) + 22114 com.apple.HIToolbox 0x957f0063 CLine::GetLineHilites(TCharOffsetRange, CLineHilitesList*, unsigned char, char) + 7915 com.apple.HIToolbox 0x957b60ea CTextensionDisplay::GetLineHilites(long, TCharOffsetRange, CLineHilitesList*, unsigned char, char) + 10616 com.apple.HIToolbox 0x957e8819 CSelection::CalcRangeRect(TCharOffsetRange, TLongRect*, unsigned char) + 19717 com.apple.HIToolbox 0x957e88df CSelection::CalcCaretRect() + 6118 com.apple.HIToolbox 0x957e893d CSelection::GetCaretRect(TLongRect*) + 3319 com.apple.HIToolbox 0x957b6132 CTextensionDisplay::CharToPoint(TCharOffset, long*, long*, long*) + 6020 com.apple.HIToolbox 0x957b6e66 CTextensionDisplay::CharToPoint(TCharOffset, long*) + 5821 com.apple.HIToolbox 0x957ebd2a CSelection::UpdateAnchors(TCharOffsetRange const&, unsigned char, unsigned char) + 9822 com.apple.HIToolbox 0x957b9b4b CTextensionDisplay::EndEdit(TEditInfo const&, long, long, TCharOffset*) + 16523 com.apple.HIToolbox 0x957c80e2 CTextension::EndEdit(TEditInfo const&, long, long, TCharOffset*, unsigned char) + 5624 com.apple.HIToolbox 0x957d930a CUnicodeTextension::UnicodeReplaceRange(long, long, TReplaceParams const&, unsigned char, unsigned char) + 260025 com.apple.HIToolbox 0x957d9509 CUnicodeTextension::ReplaceRange(long, long, TReplaceParams const&, unsigned char, unsigned char) + 10126 com.apple.HIToolbox 0x957ca5cd CReplaceTextCommand::DoMainAction() + 6727 com.apple.HIToolbox 0x957ca035 CTextensionEditCommand::DoIt(short*) + 2928 com.apple.HIToolbox 0x957c9920 CTextensionCommand::Execute(short*) + 5429 com.apple.HIToolbox 0x957cf9c9 OpaqueTXNObject::ExecuteCurrCommand() + 11330 com.apple.HIToolbox 0x957cff11 OpaqueTXNObject::NewCommand(short, AttrObjModifier const*, TKeyDownParams*, TReplaceParams*) + 106131 com.apple.HIToolbox 0x957bd030 DoSetDataCommand(OpaqueTXNObject*, unsigned long, unsigned long, TReplaceParams*) + 29932 com.apple.HIToolbox 0x957c4fd3 TXNSetData + 68333 libwx_macud-2.8.0.dylib 0x0171d9f8 wxMacMLTEControl::SetTXNData(wxString const&, unsigned long, unsigned long) + 16834 libwx_macud-2.8.0.dylib 0x017207b5 wxMacMLTEControl::WriteText(wxString const&) + 20535 libwx_macud-2.8.0.dylib 0x0171fa82 wxTextCtrl::WriteText(wxString const&) + 24236 _controls_.so 0x05c88633 _wrap_TextCtrl_AppendText + 247 (wxPython.h:48)37 org.python.python 0x000c8841 PyEval_EvalFrameEx + 2076938 org.python.python 0x000ca90a PyEval_EvalCodeEx + 204239 org.python.python 0x000c8b33 PyEval_EvalFrameEx + 2152340 org.python.python 0x000c9933 PyEval_EvalFrameEx + 2510741 org.python.python 0x000ca90a PyEval_EvalCodeEx + 204242 org.python.python 0x00042832 function_call + 16243 org.python.python 0x0000f5b5 PyObject_Call + 8544 org.python.python 0x00021ff6 instancemethod_call + 42245 org.python.python 0x0000f5b5 PyObject_Call + 8546 org.python.python 0x000c278e PyEval_CallObjectWithKeywords + 7847 org.python.python 0x00038f02 PyFile_WriteObject + 35448 org.python.python 0x000c6c4c PyEval_EvalFrameEx + 1361249 org.python.python 0x000c9933 PyEval_EvalFrameEx + 2510750 org.python.python 0x000ca90a PyEval_EvalCodeEx + 204251 org.python.python 0x00042832 function_call + 16252 org.python.python 0x0000f5b5 PyObject_Call + 8553 org.python.python 0x000c617b PyEval_EvalFrameEx + 1084354 org.python.python 0x000c9933 PyEval_EvalFrameEx + 2510755 org.python.python 0x000c9933 PyEval_EvalFrameEx + 2510756 org.python.python 0x000ca90a PyEval_EvalCodeEx + 204257 org.python.python 0x00042832 function_call + 16258 org.python.python 0x0000f5b5 PyObject_Call + 8559 org.python.python 0x00021ff6 instancemethod_call + 42260 org.python.python 0x0000f5b5 PyObject_Call + 8561 org.python.python 0x0007dd17 slot_tp_init + 8762 org.python.python 0x0007c710 type_call + 17663 org.python.python 0x0000f5b5 PyObject_Call + 8564 org.python.python 0x000c6ef6 PyEval_EvalFrameEx + 1429465 org.python.python 0x000c9933 PyEval_EvalFrameEx + 2510766 org.python.python 0x000ca90a PyEval_EvalCodeEx + 204267 org.python.python 0x00042832 function_call + 16268 org.python.python 0x0000f5b5 PyObject_Call + 8569 org.python.python 0x00021ff6 instancemethod_call + 42270 org.python.python 0x0000f5b5 PyObject_Call + 8571 org.python.python 0x000c278e PyEval_CallObjectWithKeywords + 7872 _core_.so 0x0100ab2e wxPyCallback::EventThunker(wxEvent&) + 234 (helpers.cpp:1759)73 libwx_macud-2.8.0.dylib 0x0169c97a wxEvtHandler::ProcessEventIfMatches(wxEventTableEntryBase const&, wxEvtHandler*, wxEvent&) + 10874 libwx_macud-2.8.0.dylib 0x0169ca20 wxEvtHandler::SearchDynamicEventTable(wxEvent&) + 8075 libwx_macud-2.8.0.dylib 0x0169d81f wxEvtHandler::ProcessEvent(wxEvent&) + 22576 libwx_macud-2.8.0.dylib 0x016cf6b1 wxControl::ProcessCommand(wxCommandEvent&) + 2777 libwx_macud-2.8.0.dylib 0x016ca2f6 wxButton::MacControlHit(void*, void*) + 6278 libwx_macud-2.8.0.dylib 0x01734d47 wxMacWindowControlEventHandler(OpaqueEventHandlerCallRef*, OpaqueEventRef*, void*) + 60579 libwx_macud-2.8.0.dylib 0x017356a9 wxMacWindowEventHandler(OpaqueEventHandlerCallRef*, OpaqueEventRef*, void*) + 19780 com.apple.HIToolbox 0x95582c2f DispatchEventToHandlers(EventTargetRec*, OpaqueEventRef*, HandlerCallRec*) + 156781 com.apple.HIToolbox 0x95581ef6 SendEventToEventTargetInternal(OpaqueEventRef*, OpaqueEventTargetRef*, HandlerCallRec*) + 41182 com.apple.HIToolbox 0x955a47f3 SendEventToEventTarget + 5283 com.apple.HIToolbox 0x955f3cce SendControlHit(HIView*, OpaqueEventRef*, short, unsigned long) + 29684 com.apple.HIToolbox 0x955f3b4f HIView::NotifyControlHit(OpaqueEventRef*, short, unsigned long) + 4585 com.apple.HIToolbox 0x9565865f HIView::ClickInternal(CGPoint const&, unsigned long, void (*)(OpaqueControlRef*, short), OpaqueEventRef*, bool) + 24586 com.apple.HIToolbox 0x95659c18 HIView::ClickSelf(OpaqueEventRef*) + 36887 com.apple.HIToolbox 0x95595af9 HIView::EventHandler(OpaqueEventHandlerCallRef*, OpaqueEventRef*, void*) + 236388 com.apple.HIToolbox 0x95582c2f DispatchEventToHandlers(EventTargetRec*, OpaqueEventRef*, HandlerCallRec*) + 156789 com.apple.HIToolbox 0x95581ef6 SendEventToEventTargetInternal(OpaqueEventRef*, OpaqueEventTargetRef*, HandlerCallRec*) + 41190 com.apple.HIToolbox 0x955a47f3 SendEventToEventTarget + 5291 com.apple.HIToolbox 0x955f2b8e HIView::Click(OpaqueEventRef*) + 48092 com.apple.HIToolbox 0x955f295b HandleClickAsHIView(OpaqueWindowPtr*, OpaqueEventRef*) + 15193 com.apple.HIToolbox 0x955f1238 HandleWindowClick(OpaqueWindowPtr*, Point, short, unsigned long, OpaqueEventRef*) + 49194 com.apple.HIToolbox 0x955f0d3b HandleMouseEvent(OpaqueEventHandlerCallRef*, OpaqueEventRef*) + 78695 com.apple.HIToolbox 0x955f0652 StandardWindowEventHandler(OpaqueEventHandlerCallRef*, OpaqueEventRef*, void*) + 9396 com.apple.HIToolbox 0x95582c2f DispatchEventToHandlers(EventTargetRec*, OpaqueEventRef*, HandlerCallRec*) + 156797 com.apple.HIToolbox 0x95581ef6 SendEventToEventTargetInternal(OpaqueEventRef*, OpaqueEventTargetRef*, HandlerCallRec*) + 41198 com.apple.HIToolbox 0x955a47f3 SendEventToEventTarget + 5299 com.apple.HIToolbox 0x955b634f ToolboxEventDispatcherHandler(OpaqueEventHandlerCallRef*, OpaqueEventRef*, void*) + 1257100 com.apple.HIToolbox 0x95583080 DispatchEventToHandlers(EventTargetRec*, OpaqueEventRef*, HandlerCallRec*) + 2672101 com.apple.HIToolbox 0x95581ef6 SendEventToEventTargetInternal(OpaqueEventRef*, OpaqueEventTargetRef*, HandlerCallRec*) + 411102 com.apple.HIToolbox 0x955a47f3 SendEventToEventTarget + 52103 libwx_macud-2.8.0.dylib 0x016bfd9a wxApp::MacHandleOneEvent(void*) + 34104 libwx_macud-2.8.0.dylib 0x016bfe62 wxApp::MacDoOneEvent() + 120105 libwx_macud-2.8.0.dylib 0x016da3de wxEventLoop::Dispatch() + 32106 libwx_macud-2.8.0.dylib 0x0179667d wxEventLoopManual::Run() + 97107 libwx_macud-2.8.0.dylib 0x0176c7fe wxAppBase::MainLoop() + 76108 _core_.so 0x010018dc wxPyApp::MainLoop() + 52 (helpers.cpp:215)109 _core_.so 0x0104f03a _wrap_PyApp_MainLoop + 82 (_core_wrap.cpp:31686)110 org.python.python 0x000c8841 PyEval_EvalFrameEx + 20769111 org.python.python 0x000ca90a PyEval_EvalCodeEx + 2042112 org.python.python 0x00042832 function_call + 162113 org.python.python 0x0000f5b5 PyObject_Call + 85114 org.python.python 0x00021ff6 instancemethod_call + 422115 org.python.python 0x0000f5b5 PyObject_Call + 85116 org.python.python 0x000c6ef6 PyEval_EvalFrameEx + 14294117 org.python.python 0x000c9933 PyEval_EvalFrameEx + 25107118 org.python.python 0x000ca90a PyEval_EvalCodeEx + 2042119 org.python.python 0x000caa97 PyEval_EvalCode + 87120 org.python.python 0x000ef158 PyRun_FileExFlags + 168121 org.python.python 0x000f0087 PyRun_SimpleFileExFlags + 855122 org.python.python 0x00109137 Py_Main + 3255123 org.python.python 0x00001f82 0x1000 + 3970 I am not sure what the problem is as it works perfectly fine on windows and unix. Any kind of help is appreciated. I ran this again using sudo and this time there is no crash but on the other hand there is no output. Already seen this *issue* <http://bugs.python.org/issue9405> but how should I fix it in my case? -- Regards, Shalin Shah

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Doc Bug: argparse positional argument documentation is wrong.
by Dhawal Bhanushali 05 Nov '13

05 Nov '13

I tried the example for argparse in my shell http://docs.python.org/2/howto/argparse.html#introducing-positional-argumen… Found that the output is different from the one I got in the shell. Here is the output in the shell. http://ideone.com/D0as2n Thanks, DYB

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python2.7/subprocess.py Popen on Ubuntu 10.04 Bug
by Eyal Moscovici 05 Nov '13

05 Nov '13

Hi, I found that using Popen with both executable and shell parameters set creates a bug: For example: Calling: Popen(["-a"], exacutable="/bin/ls", shell=True) Exacutes: /bin/ls -c -a instead of: /bin/sh -c "/bin/ls -a" The bug in the function: def _execute_child(self, args, executable, preexec_fn, close_fds, cwd, env, universal_newlines, startupinfo, creationflags, shell, p2cread, p2cwrite, c2pread, c2pwrite, errread, errwrite): """Execute program (POSIX version)""" Lines: 1124-1127: if shell: args = ["/bin/sh", "-c"] + args if executable: args[0] = executable Eyal Moscovici Networking and Virtualization Technologies IBM Haifa Research Lab

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[issue19154] AttributeError: 'NoneType' in http/client.py when using select when file descriptor is closed.
by Terry J. Reedy 05 Nov '13

05 Nov '13

Changes by Terry J. Reedy <tjreedy(a)udel.edu>: ---------- versions: -Python 2.7, Python 3.3 _______________________________________ Python tracker <report(a)bugs.python.org> <http://bugs.python.org/issue19154> _______________________________________

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pygettext is obsolete
by Tom Wallroth 04 Nov '13

04 Nov '13

Dear mailing list, The documentation for i18n support is a bit outdated. It mentions pygettext, but it seems that pygettext was declared obsolete by just about anybody in 2004 and was replaced by its original implementation "xgettext". Here's a link to the part of the documentation, which is outdated: http://docs.python.org/3.3/library/gettext.html#id3 And some proof of pygettext not being used anymore since 2004: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=246332 Sincerely, Tom Wallroth

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[issue19487] Correct the error of the example given in the doc of partialmethod
by Nick Coghlan 04 Nov '13

04 Nov '13

New submission from Nick Coghlan: Thanks for the report, this has now been fixed in http://hg.python.org/cpython/rev/ac1685661b07 ---------- resolution: -> fixed stage: -> committed/rejected status: open -> closed _______________________________________ Python tracker <report(a)bugs.python.org> <http://bugs.python.org/issue19487> _______________________________________

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[issue17827] Document codecs.encode and codecs.decode
by Nick Coghlan 04 Nov '13

04 Nov '13

New submission from Nick Coghlan: The codecs module has long offered encode() and decode() convenience functions (since 2004: http://hg.python.org/cpython-fullhistory/rev/8ea2cb1ec598), but they're not documented (except through docstrings). We should fix that. >From the docstrings: ========== encode(obj, [encoding[,errors]]) -> object Encodes obj using the codec registered for encoding. encoding defaults to the default encoding. errors may be given to set a different error handling scheme. Default is 'strict' meaning that encoding errors raise a ValueError. Other possible values are 'ignore', 'replace' and 'xmlcharrefreplace' as well as any other name registered with codecs.register_error that can handle ValueErrors. ========== decode(obj, [encoding[,errors]]) -> object Decodes obj using the codec registered for encoding. encoding defaults to the default encoding. errors may be given to set a different error handling scheme. Default is 'strict' meaning that encoding errors raise a ValueError. Other possible values are 'ignore' and 'replace' as well as any other name registered with codecs.register_error that is able to handle ValueErrors. ========== Note that the difference between the convenience functions in the codecs module and the methods on str, bytes and bytearray is that the latter have additional type checks to limit their usage to text encodings. str.encode expects a str->bytes conversion, while bytes.decode and bytearray.decode both expect the codec to produce a str object. codecs.encode and codecs.decode are both arbitrary object->object conversions, limited only by whatever the chosen codec supports. ---------- assignee: docs@python components: Documentation messages: 187700 nosy: docs@python, ncoghlan priority: normal severity: normal status: open title: Document codecs.encode and codecs.decode versions: Python 2.7, Python 3.3, Python 3.4 _______________________________________ Python tracker <report(a)bugs.python.org> <http://bugs.python.org/issue17827> _______________________________________

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[issue19391] Fix PCbuild/readme.txt in 2.7 and 3.3
by Zachary Ware 04 Nov '13

04 Nov '13

New submission from Zachary Ware: As discussed in issue19273, here are a pair of patches that correct factual errors in PCbuild/readme.txt in both 2.7 and 3.3. The 3.3 patch makes the following changes: - Remove Win2k mentions, it is not supported (Tcl nmake command also adjusted) - MSVCRT9 -> MSVCRT10 - SQLite 3.7.4 -> 3.7.12, remove "(see below)" with nothing to see - .vcproj -> .vcxproj, all occurrences - _bz2.vcxproj isn't as magical as it was made out to be, and it can clean itself - nasmw -> nasm - Remove untrue part of Building for Itanium section - Update msdn link - .vsprops -> .props - Trim trailing space Due to the large number of lines in the diff due to trailing space, I'll also be attaching a patch created by `hg diff -w` for ease of review. ---------- assignee: docs@python components: Documentation, Windows files: pcbuild_readme-3.3.diff keywords: patch messages: 201253 nosy: brian.curtin, christian.heimes, docs@python, ezio.melotti, loewis, python-dev, tim.golden, zach.ware priority: normal severity: normal status: open title: Fix PCbuild/readme.txt in 2.7 and 3.3 type: enhancement versions: Python 2.7, Python 3.3 Added file: http://bugs.python.org/file32354/pcbuild_readme-3.3.diff _______________________________________ Python tracker <report(a)bugs.python.org> <http://bugs.python.org/issue19391> _______________________________________

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[issue19487] Correct the error of the example given in the doc of partialmethod
by R. David Murray 03 Nov '13

03 Nov '13

Changes by R. David Murray <rdmurray(a)bitdance.com>: ---------- assignee: docs@python -> nosy: +ncoghlan _______________________________________ Python tracker <report(a)bugs.python.org> <http://bugs.python.org/issue19487> _______________________________________

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