Mailman 3 January 2009 - Python-Dev

FINAL REMINDER: OSCON 2009: Call For Participation
by Aahz Jan. 31, 2009

Jan. 31, 2009

The O'Reilly Open Source Convention has opened up the Call For Participation -- deadline for proposals is Tuesday Feb 3. OSCON will be held July 20-24 in San Jose, California. For more information, see http://conferences.oreilly.com/oscon http://en.oreilly.com/oscon2009/public/cfp/57 -- Aahz (aahz(a)pythoncraft.com) <*> http://www.pythoncraft.com/ Weinberg's Second Law: If builders built buildings the way programmers wrote programs, then the first woodpecker that came along would destroy civilization.

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Universal newlines, and the gzip module.
by Christopher Barker Jan. 30, 2009

Jan. 30, 2009

Hi all, Over on the matplotlib mailing list, we ran into a problem with trying to use Universal newlines with gzip. In virtually all of my code that reads text files, I use the 'U' flag to open files, it really helps not having to deal with newline issues. Yes, they are fewer now that the Macintosh uses \n, but they can still be a pain. Anyway, we added such support to some matplotlib methods, and found that gzip file reading broken We were passing the flags though into either file() or gzip.open(), and passing 'U' into gzip.open() turns out to be fatal. 1) It would be nice if the gzip module (and the zip lib module) supported Universal newlines -- you could read a compressed text file with "wrong" newlines, and have them handled properly. However, that may be hard to do, so at least: 2) Passing a 'U' flag in to gzip.open shouldn't break it. I took a look at the Python SVN (2.5.4 and 2.6.1) for the gzip lib. I see this: # guarantee the file is opened in binary mode on platforms # that care about that sort of thing if mode and 'b' not in mode: mode += 'b' if fileobj is None: fileobj = self.myfileobj = __builtin__.open(filename, mode or 'rb') this is going to break for 'U' == you'll get 'rUb'. I tested file(filename, 'rUb'), and it looks like it does universal newline translation. So: * Either gzip should be a bit smarter, and remove the 'U' flag (that's what we did in the MPL code), or force 'rb' or 'wb'. * Or: file opening should be a bit smarter -- what does 'rUb' mean? a file can't be both Binary and Universal Text. Should it raise an exception? Somehow I think it would be better to ignore the 'U', but maybe that's only because of the issue I happen to be looking at now. That later seems a better idea -- this issue could certainly come up in other places than the gzip module, but maybe it would break a bunch of code -- who knows? I haven't touched py3 yet, so I have not idea if this issue is different there. -Chris -- Christopher Barker, Ph.D. Oceanographer Emergency Response Division NOAA/NOS/OR&R (206) 526-6959 voice 7600 Sand Point Way NE (206) 526-6329 fax Seattle, WA 98115 (206) 526-6317 main reception Chris.Barker(a)noaa.gov

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Partial function application 'from the right'
by Ben North Jan. 30, 2009

Jan. 30, 2009

Hi, > [ Potential new "functools.partial_right", e.g., > > split_comma = partial_right(str.split, '.') > ] Thanks for the feedback. Apologies if (as was suggested) this should have gone to python-ideas; I thought as a fairly small extension to existing functionality it would be OK here. I'll try to summarise the responses. There was some very luke-warm support. Terry Reedy suggested it would be worth posting a patch to the tracker, for the record, even if it turns out to be rejected. Nick Coghlan made more clear than I did the main reason a 'partial_right' would be useful: > [...] some functions and methods written in C (such as string methods) > *don't* [support keyword args], so partial's keyword support doesn't > help. > > A functools.rpartial would go some way towards addressing that. On the other hand, Collin Winter asked for more evidence that real benefit (beyond mere 'completeness' of the functools module) would result. I don't really have to hand anything more than the three cases mentioned in my original email (str.split, math.log, itertools.islice), but since the change is so small, I thought the feature worth raising. Leif Walsh pointed out that you could achieve the same effect by defining your own function. This is true, but functools.partial exists because it's sometimes useful to create such functions either more concisely, or anonymously. A 'partial_right' would allow more such functions to be so created. Peter Harris was negative on the idea, pointing out that after g = partial_right(f, 7) you don't know which argument of 'f' the '7' is going to end up as, because it depends on how many are supplied in the eventual call to 'g'. This is true, and would require some care in partial_right's use. Peter also wondered > There's probably a reason why Haskell doesn't do this... I have only written about five lines of Haskell in my life, so take this with a hefty pinch of salt, but: Haskell does have a 'flip' function which reverses the order of a function's arguments, so it looks like you can very easily build a 'partial_right' in Haskell, especially since standard functions are in curried form. There was some discussion (started by Antoine Pitrou) of an idea to generalise 'partial' further, potentially using the Ellipsis object, to allow arbitrarily-placed 'holes' in the argument list. E.g., split_comma = partial(str.split, ..., ',') In some ways I quite like the even-more-completeness of this idea, but think that it might be the wrong side of the complexity/benefit trade-off. Scott David Daniels pointed out that using Ellipsis would have the downside of > [...] preventing any use of partial when an argument could be an the > Ellipsis instance. This could be fixed by making the general form be something with the meaning partial_explicit(f, hole_sentinel, *args, **kwargs) where appearances of the exact object 'hole_sentinel' in 'args' would indicate a hole, to be filled in at the time of the future call. A user wanting to have '...' passed in as a true argument could then do g = partial_explicit(f, None, 3, ..., 4, axis = 2) or hole = object() g = partial_explicit(f, hole, 3, ..., hole, 4, axis = 2) if they wanted a true '...' argument and a hole. (I might have the syntax for this wrong, having not played with Python 3.0, but I hope the idea is clear.) There was some concern expressed (by Daniel Stutzbach, Alexander Belopolsky) that the meaning of '...' would be confusing --- 'one hole' or 'arbitrary many holes'? I think the extra complexity vs extra functionality trade-off is worth considering for 'partial_right', but my personal opinion is that a 'partial_explicit' has that trade-off the wrong way. I'll try to find time to create the patch in the tracker in the next few days, by which time perhaps it'll have become clearer whether the idea is a good one or not. Thanks, Ben.

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Re: [Python-Dev] Partial function application 'from the right'
by scav＠blueyonder.co.uk Jan. 30, 2009

Jan. 30, 2009

Hi all, > On Thu, Jan 29, 2009 at 6:12 AM, Ben North <ben(a)redfrontdoor.org> wrote: >> Hi, >> >> I find 'functools.partial' useful, but occasionally I'm unable to use it >> because it lacks a 'from the right' version. > -1 For me, the main objection to a partial that places its stored positional arguments from the right is that you don't know which positions those arguments will actually occupy until the partial is called. Who *really* thinks that would be a neat feature? There's probably a reason why Haskell doesn't do this... Peter Harris

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Summary of Python tracker Issues
by Python tracker Jan. 30, 2009

Jan. 30, 2009

ACTIVITY SUMMARY (01/23/09 - 01/30/09) Python tracker at http://bugs.python.org/ To view or respond to any of the issues listed below, click on the issue number. Do NOT respond to this message. 2352 open (+54) / 14582 closed (+20) / 16934 total (+74) Open issues with patches: 788 Average duration of open issues: 697 days. Median duration of open issues: 6 days. Open Issues Breakdown open 2328 (+53) pending 24 ( +1) Issues Created Or Reopened (74) _______________________________ urrlib2/httplib doesn't reset file position between requests 01/23/09 http://bugs.python.org/issue5038 created matejcik Adjust reference-counting note 01/24/09 http://bugs.python.org/issue5039 created tjreedy Bug of CGIXMLRPCRequestHandler 01/24/09 http://bugs.python.org/issue5040 created WayneHuang Memory leak in imp.find_module 01/24/09 CLOSED http://bugs.python.org/issue5041 created ocean-city patch, easy Structure sub-subclass does not initialize with base class posit 01/24/09 http://bugs.python.org/issue5042 created jaraco get_msvcr() returns None rather than [] 01/24/09 http://bugs.python.org/issue5043 created lkcl name not found in generator in eval() 01/24/09 http://bugs.python.org/issue5044 created fjhpy imaplib should remove length of literal strings 01/24/09 http://bugs.python.org/issue5045 created bmoore native win32 and wine mingw+msys build of python2.7 01/24/09 CLOSED http://bugs.python.org/issue5046 created lkcl patch Remove Monterey support from configure.in 01/24/09 http://bugs.python.org/issue5047 created skip.montanaro patch Extending itertools.combinations 01/25/09 CLOSED http://bugs.python.org/issue5048 created konryd ctypes unwilling to allow pickling wide character 01/25/09 http://bugs.python.org/issue5049 created jaraco unicode(C) invokes C.__unicode__ when __unicode__ is defined 01/25/09 CLOSED http://bugs.python.org/issue5050 created livibetter test_update2 in test_os.py invalid due to os.environ.clear() fol 01/25/09 http://bugs.python.org/issue5051 created lkcl Mark distutils to stay compatible with 2.3 01/25/09 http://bugs.python.org/issue5052 reopened tarek http.client.HTTPMessage.getallmatchingheaders() always returns [ 01/25/09 http://bugs.python.org/issue5053 created mwatkins patch CGIHTTPRequestHandler.run_cgi() HTTP_ACCEPT improperly parsed 01/25/09 http://bugs.python.org/issue5054 created mwatkins Distutils-SIG page needs to be updated 01/25/09 CLOSED http://bugs.python.org/issue5055 created akitada PyAPI assumes OS can access shared data in loadable modules (win 01/25/09 CLOSED http://bugs.python.org/issue5056 created lkcl patch Unicode-width dependent optimization leads to non-portable pyc f 01/25/09 http://bugs.python.org/issue5057 created pitrou stop pgen.exe from generating CRLF-ended files and causing mayhe 01/25/09 CLOSED http://bugs.python.org/issue5058 created lkcl Policy.DomainStrict in cookielib example code 01/25/09 http://bugs.python.org/issue5059 created babo gcc profile guided optimization 01/25/09 http://bugs.python.org/issue5060 created rpetrov patch Inadequate documentation of the built-in function open 01/25/09 http://bugs.python.org/issue5061 created MLModel Rlcompleter.Completer does not use __dir__ magic method 01/26/09 http://bugs.python.org/issue5062 created carlj patch python-2.6.spec doesn't build properly 01/26/09 http://bugs.python.org/issue5063 created ptoal patch compiler.parse raises SyntaxErrors without line number informati 01/26/09 http://bugs.python.org/issue5064 created exarkun IDLE improve Subprocess Startup Error message 01/26/09 http://bugs.python.org/issue5065 created stevenjd IDLE documentation for Unix obsolete/incorrect 01/26/09 http://bugs.python.org/issue5066 created stevenjd Error msg from using wrong quotes in JSON is unhelpful 01/26/09 http://bugs.python.org/issue5067 created stevenjd patch tarfile loops forever on broken input 01/26/09 http://bugs.python.org/issue5068 created fijal Use sets instead of list in posixpath._resolve_link 01/26/09 CLOSED http://bugs.python.org/issue5069 created tzot patch Distutils should create install dir if needed 01/26/09 http://bugs.python.org/issue5070 created andybuckley Distutils should not fail if install dir is not in PYTHONPATH 01/26/09 http://bugs.python.org/issue5071 created andybuckley urllib.open sends full URL after GET command instead of local pa 01/26/09 http://bugs.python.org/issue5072 created olemis bsddb/test/test_lock.py sometimes fails due to floating point er 01/26/09 CLOSED http://bugs.python.org/issue5073 created ocean-city patch python3 and ctypes, script causes crash 01/27/09 CLOSED http://bugs.python.org/issue5074 created pooryorick bdist_wininst should not depend on the vc runtime? 01/27/09 CLOSED http://bugs.python.org/issue5075 created mhammond patch bdist_wininst fails on py3k 01/27/09 CLOSED http://bugs.python.org/issue5076 created mhammond patch, patch 2to3 fixer for the removal of operator functions 01/27/09 http://bugs.python.org/issue5077 created alexandre.vassalotti Avoid redundant call to FormatError() 01/27/09 http://bugs.python.org/issue5078 created eckhardt patch time.ctime docs refer to "time tuple" for default 01/27/09 http://bugs.python.org/issue5079 created tlynn PyArg_Parse* should raise TypeError for float parsed with intege 01/27/09 http://bugs.python.org/issue5080 created marketdickinson Unable to print Unicode characters in Python 3 on Windows 01/27/09 CLOSED http://bugs.python.org/issue5081 created giampaolo.rodola Let frameworks to register attributes as builtins 01/27/09 CLOSED http://bugs.python.org/issue5082 created andrea-bs New resource ('gui') for regrtest 01/27/09 CLOSED http://bugs.python.org/issue5083 created gpolo patch unpickling does not intern attribute names 01/27/09 http://bugs.python.org/issue5084 created jakemcguire patch distutils/test_sdist failure on windows 01/27/09 CLOSED http://bugs.python.org/issue5085 created ocean-city patch set_daemon does not exist in Thread 01/28/09 CLOSED http://bugs.python.org/issue5086 created mnewman set_daemon does not exist in Thread 01/28/09 CLOSED http://bugs.python.org/issue5087 created mnewman optparse: inconsistent default value for append actions 01/28/09 http://bugs.python.org/issue5088 created pycurry Error in atexit._run_exitfuncs [...] Exception expected for valu 01/28/09 http://bugs.python.org/issue5089 created marketdickinson import tkinter library Visual C++ Concepts:C Run-Time Error R603 01/28/09 http://bugs.python.org/issue5090 created guxianminer Segfault in PyObject_Malloc(), address out of bounds 01/28/09 http://bugs.python.org/issue5091 created christian.heimes weird memory usage in multiprocessing module 01/29/09 CLOSED http://bugs.python.org/issue5092 created Orlowski 2to3 with a pipe on non-ASCII script 01/29/09 http://bugs.python.org/issue5093 created haypo patch datetime lacks concrete tzinfo impl. for UTC 01/29/09 http://bugs.python.org/issue5094 created brett.cannon msi missing from "bdist --help-formats" 01/29/09 http://bugs.python.org/issue5095 created bethard strange thing after call PyObject_CallMethod 01/29/09 http://bugs.python.org/issue5096 created exe asyncore.dispatcher_with_send undocumented 01/29/09 http://bugs.python.org/issue5097 created exe Environ doesn't escape spaces properly 01/29/09 CLOSED http://bugs.python.org/issue5098 created stuaxo subprocess.POpen.__del__() AttributeError (os module == None!) 01/29/09 http://bugs.python.org/issue5099 created marystern ElementTree.iterparse and Element.tail confusion 01/29/09 http://bugs.python.org/issue5100 created jeroen.dirks test_funcattrs truncated during unittest conversion 01/29/09 http://bugs.python.org/issue5101 created marketdickinson urllib2.py timeouts do not propagate across redirects for 2.6.1 01/29/09 http://bugs.python.org/issue5102 created jacques ssl.SSLSocket timeout not working correctly when remote end is h 01/29/09 http://bugs.python.org/issue5103 created jacques getsockaddrarg() casts port number from int to short without any 01/29/09 http://bugs.python.org/issue5104 created roman.zeyde sqlite3.Row class, handling duplicate column names resulting fro 01/29/09 http://bugs.python.org/issue5105 created sockonafish Update Naming & Binding statement for 3.0 01/30/09 http://bugs.python.org/issue5106 created tjreedy built-in open(..., encoding=vague_default) 01/30/09 http://bugs.python.org/issue5107 created sjmachin Invalid UTF-8 ("%s") length in PyUnicode_FromFormatV() 01/30/09 http://bugs.python.org/issue5108 created haypo patch array.array constructor very slow when passed an array object. 01/30/09 http://bugs.python.org/issue5109 created malcolmp Printing Unicode chars from the interpreter in a non-UTF8 termin 01/30/09 http://bugs.python.org/issue5110 created ezio.melotti patch httplib: wrong Host header when connecting to IPv6 loopback 01/30/09 http://bugs.python.org/issue5111 created gdesmott Issues Now Closed (47) ______________________ [distutils] - error when processing the "--formats=tar" option 30 days http://bugs.python.org/issue1885 tarek patch shutil.destinsrc returns wrong result when source path matches b 357 days http://bugs.python.org/issue2047 pitrou patch, easy msi installs to the incorrect location (C drive) 320 days http://bugs.python.org/issue2271 loewis Ttk support for Tkinter 246 days http://bugs.python.org/issue2983 gpolo Python 2.5.2 Windows Source Distribution missing Visual Studio 2 225 days http://bugs.python.org/issue3105 loewis multiprocessing adds built-in types to the global copyreg.dispat 196 days http://bugs.python.org/issue3350 jnoller Fix gdbinit for Python 3.0 164 days http://bugs.python.org/issue3610 skip.montanaro patch importing from UNC roots doesn't work 152 days http://bugs.python.org/issue3677 ocean-city patch _tkinter._flatten() doesn't check PySequence_Size() error code 136 days http://bugs.python.org/issue3880 benjamin.peterson patch IDLE won't start in custom directory. 130 days http://bugs.python.org/issue3881 loewis patch zipfile and winzip 11 days http://bugs.python.org/issue3997 amaury.forgeotdarc patch, needs review open(0, closefd=False) prints 3 warnings 92 days http://bugs.python.org/issue4233 haypo patch Portability fixes in longobject.c 62 days http://bugs.python.org/issue4393 marketdickinson patch 2.6.1 breaks many applications that embed Python on Windows 52 days http://bugs.python.org/issue4566 mhammond patch, needs review range objects becomes hashable after attribute access 41 days http://bugs.python.org/issue4701 jcea patch python3.0 -u: unbuffered stdout 7 days http://bugs.python.org/issue4705 pitrou patch round(25, 1) should return an integer, not a float 39 days http://bugs.python.org/issue4707 marketdickinson patch [PATCH] zipfile.ZipFile does not extract directories properly 34 days http://bugs.python.org/issue4710 loewis patch, needs review deprecate/delete distutils.mwerkscompiler... 19 days http://bugs.python.org/issue4863 tarek patch Inconsistent usage of next/__next__ in ABC collections; collecti 17 days http://bugs.python.org/issue4920 rhettinger patch Make heapq work with all mutable sequences 14 days http://bugs.python.org/issue4948 rhettinger doctest.testfile should set __name__, can't use namedtuple 6 days http://bugs.python.org/issue5021 rhettinger test_kqueue failure on OS X 3 days http://bugs.python.org/issue5025 marketdickinson patch itertools.fixlen 4 days http://bugs.python.org/issue5034 rhettinger patch Memory leak in imp.find_module 6 days http://bugs.python.org/issue5041 ocean-city patch, easy native win32 and wine mingw+msys build of python2.7 0 days http://bugs.python.org/issue5046 loewis patch Extending itertools.combinations 3 days http://bugs.python.org/issue5048 rhettinger unicode(C) invokes C.__unicode__ when __unicode__ is defined 0 days http://bugs.python.org/issue5050 loewis Distutils-SIG page needs to be updated 0 days http://bugs.python.org/issue5055 loewis PyAPI assumes OS can access shared data in loadable modules (win 4 days http://bugs.python.org/issue5056 eckhardt patch stop pgen.exe from generating CRLF-ended files and causing mayhe 3 days http://bugs.python.org/issue5058 amaury.forgeotdarc Use sets instead of list in posixpath._resolve_link 1 days http://bugs.python.org/issue5069 benjamin.peterson patch bsddb/test/test_lock.py sometimes fails due to floating point er 0 days http://bugs.python.org/issue5073 marketdickinson patch python3 and ctypes, script causes crash 0 days http://bugs.python.org/issue5074 loewis bdist_wininst should not depend on the vc runtime? 2 days http://bugs.python.org/issue5075 mhammond patch bdist_wininst fails on py3k 3 days http://bugs.python.org/issue5076 loewis patch, patch Unable to print Unicode characters in Python 3 on Windows 0 days http://bugs.python.org/issue5081 loewis Let frameworks to register attributes as builtins 0 days http://bugs.python.org/issue5082 loewis New resource ('gui') for regrtest 1 days http://bugs.python.org/issue5083 gpolo patch distutils/test_sdist failure on windows 2 days http://bugs.python.org/issue5085 tarek patch set_daemon does not exist in Thread 0 days http://bugs.python.org/issue5086 benjamin.peterson set_daemon does not exist in Thread 2 days http://bugs.python.org/issue5087 benjamin.peterson weird memory usage in multiprocessing module 2 days http://bugs.python.org/issue5092 LambertDW Environ doesn't escape spaces properly 0 days http://bugs.python.org/issue5098 loewis threading module can deadlock after fork 163 days http://bugs.python.org/issue874900 jcea patch, needs review Improve itertools.starmap 971 days http://bugs.python.org/issue1498370 rhettinger patch cPickle cannot unpickle subnormal floats on some machines 694 days http://bugs.python.org/issue1672332 marketdickinson patch Top Issues Most Discussed (10) ______________________________ 16 Get rid of more references to __cmp__ 106 days open http://bugs.python.org/issue1717 14 Extending itertools.combinations 3 days closed http://bugs.python.org/issue5048 14 round(25, 1) should return an integer, not a float 39 days closed http://bugs.python.org/issue4707 11 python3 closes + home keys 45 days open http://bugs.python.org/issue4676 8 weird memory usage in multiprocessing module 2 days closed http://bugs.python.org/issue5092 8 xml.parsers.expat make a dictionary which keys are broken if bu 8 days open http://bugs.python.org/issue5036 8 python3.0 -u: unbuffered stdout 7 days closed http://bugs.python.org/issue4705 8 Use a named tuple for sys.version_info 83 days open http://bugs.python.org/issue4285 7 bdist_wininst fails on py3k 3 days closed http://bugs.python.org/issue5076 7 Rlcompleter.Completer does not use __dir__ magic method 5 days open http://bugs.python.org/issue5062

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Re: [Python-Dev] Python 3.0.1
by Nick Efford Jan. 30, 2009

Jan. 30, 2009

> Paul Moore <p.f.moore(a)gmail.com> wrote: > > Serious question: does anybody know how to get better communication > from the user base? My impression is that it's pretty hard to find out > who is actually using 3.0, and get any feedback from them. I suppose a > general query on clp might get some feedback, but otherwise, what? > I've not seen any significant amount of blog activity on 3.0. I teach programming in a CS dept. at a UK university. We've been teaching Python in one context or another for 5 years now, and are currently in our second year of teaching it as the primary programming language. We have to make decisions on software versions for the coming academic year during the summer months. This means that we've had to be content this year with Python 2.5. We'd love to switch to 3.0 as soon as possible (i.e., Oct 2009), as it is a significantly cleaner language for our purposes. However, we make extensive use of third-party libraries and frameworks such as Pygame, wxPython, etc, to increase the motivation levels of students. The 3.0-readiness of these libraries and frameworks is inevitably going to be a factor in the decision we make this summer. Nick

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python breakpoint opcode
by Dr Andrew Perella Jan. 30, 2009

Jan. 30, 2009

Hi, I was thinking of adding a breakpoint opcode to python to enable less invasive debugging. I came across posts from 1999 by Vladimir Marangozov and Christian Tismer discussing this issue but the links to the code are all out of date. Did anything come of this? Is this a good approach to take? - if so why was this never incorporated? Cheers, Andrew Dr. Andrew Perella Chief Software Architect Eutechnyx Limited. Metro Centre East Business Park, Waterside Drive, Gateshead, Tyne & Wear NE11 9HU UK Co.Reg.No. 2172322 T +44 (0) 191 460 6060 F +44 (0) 191 460 2266 E <mailto:ajp@eutechnyx.com> ajp(a)eutechnyx.com W <http://www.eutechnyx.com> www.eutechnyx.com This e-mail is confidential and may be privileged. It may be read, copied and used only by the intended recipient. No communication sent by e-mail to or from Eutechnyx is intended to give rise to contractual or other legal liability, apart from liability which cannot be excluded under English law. This e-mail is confidential and may be privileged. It may be read, copied and used only by the intended recipient. No communication sent by e-mail to or from Eutechnyx is intended to give rise to contractual or other legal liability, apart from liability which cannot be excluded under English law. This email has been scanned for all known viruses by the Email Protection Agency. http://www.epagency.net www.eutechnyx.com Eutechnyx Limited. Registered in England No: 2172322

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Broken Test -- test_distutils
by Raymond Hettinger Jan. 29, 2009

Jan. 29, 2009

In the past couple of days, test_distutils started failing. It looks like a pure python error and may have been introduced by guilherme.polo's checkins: File "c:\py27\lib\distutils\tests\test_sdist.py", line 119, in test_make_distr ibution spawn('tar --help') File "c:\py27\lib\distutils\spawn.py", line 37, in spawn _spawn_nt(cmd, search_path, dry_run=dry_run) File "c:\py27\lib\distutils\spawn.py", line 70, in _spawn_nt cmd = _nt_quote_args(cmd) File "c:\py27\lib\distutils\spawn.py", line 61, in _nt_quote_args args[i] = '"%s"' % args[i] TypeError: 'str' object does not support item assignment 1 test failed: test_distutils Raymond

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Include C++ code in the ctypes test suite?
by Thomas Heller Jan. 29, 2009

Jan. 29, 2009

I'm currently working on a patch that adds the __thiscall calling convention to ctypes. This calling convention is used on Windows for calling member functions from C++ classes. The idea is to eventually allow ctypes to wrap C++ classes. To test this functionality it is required to add some C++ source code to the ctypes private test module _ctypes_test.pyd/_ctypes_test.so. Is it appropriate to add C++ source files to the Python repository, or would that create too much trouble on some platforms? -- Thanks, Thomas

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Examples in Py2 or Py3
by Facundo Batista Jan. 29, 2009

Jan. 29, 2009

Hi! In the Python Argentina mail list there's already people passing examples and asking help about Python 3. This introduces the problem that some examples are in Py2 and others are in Py3. Sometimes this is not explicit, and gets confusing. I'm trying to avoid this confusion when preparing my own examples. So far, I use (py3) as a prefix for any example block, like: (Py3k) >>> (some example) (some result) Is there any recommended way to avoid confusion in these cases? (I'm thinking about changing the prompt in my Python installation, to something like ">2>>" and ">3>>", to be explicit about it... but I wanted to know if there's another better way) Thanks. -- . Facundo Blog: http://www.taniquetil.com.ar/plog/ PyAr: http://www.python.org/ar/

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