Mailman 3 August 2013 - docs

[issue14971] (unittest) loadTestsFromName does not work on method with a decorator
by Michael Foord Aug. 21, 2013

Aug. 21, 2013

Michael Foord added the comment: Cool, thanks! ---------- assignee: -> michael.foord _______________________________________ Python tracker <report(a)bugs.python.org> <http://bugs.python.org/issue14971> _______________________________________

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[issue14191] argparse doesn't allow optionals within positionals
by Glenn Linderman Aug. 21, 2013

Aug. 21, 2013

Glenn Linderman added the comment: So I read over your code again, and even read the documentation this time, and it all looks good, and I know it works good because I've been using the code. I tried to send a notice through Reitveld, and maybe did, but I don't know where it went, so I'll say this much here, too. ---------- _______________________________________ Python tracker <report(a)bugs.python.org> <http://bugs.python.org/issue14191> _______________________________________

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argparse: nargs='*' doesn't get out-of-order positional parameters (issue 14191)
by v+python＠g.nevcal.com Aug. 21, 2013

Aug. 21, 2013

Reviewers: , Message: This looks good to me, and definitely solves the problem I reported in the bug. Wish I'd had time learn the code and to do a nice thorough job of fixing the bug as paul.j3 did. In reviewing his changes, and integrating them in to my working version (where they are running fine), I did wind up learning a bit more than I had figured out on my own. Please review this at http://bugs.python.org/review/14191/ Affected files: Doc/library/argparse.rst Lib/argparse.py Lib/test/test_argparse.py

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[issue14191] argparse doesn't allow optionals within positionals
by paul j3 Aug. 20, 2013

Aug. 20, 2013

paul j3 added the comment: It's everything I intend to add. Now I'm just waiting for a committer to act, either with suggested changes, or a merge. I'm watching more than a dozen argparse patches. ---------- _______________________________________ Python tracker <report(a)bugs.python.org> <http://bugs.python.org/issue14191> _______________________________________

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[issue14971] (unittest) loadTestsFromName does not work on method with a decorator
by Claudiu.Popa Aug. 20, 2013

Aug. 20, 2013

Claudiu.Popa added the comment: The patch for Python 2.7 is pretty similar with the one provided for Python 3. ---------- nosy: +Claudiu.Popa Added file: http://bugs.python.org/file31386/unittest_method_name_difference_27.patch _______________________________________ Python tracker <report(a)bugs.python.org> <http://bugs.python.org/issue14971> _______________________________________

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Suggestion for improving 4.7.5 Lambda Forms in Python tutorial
by aseem bansal Aug. 20, 2013

Aug. 20, 2013

The tutorial about Lambda forms(Documentation->The Python Tutorial->4.7.5 Lambda Forms) currently assumes a prior knowledge of functional programming paradigm. I wanted to propose a change to that. It can be made better by adding some common sense things to the explanation so the simple examples given don't overwhelm the first-time reader due to unfamiliarity with functional programming. The following could take care of the problem. ------------------ By popular demand, a few features commonly found in functional programming languages like Lisp have been added to Python. With the lambda keyword, small anonymous functions can be created. Here’s a function that returns the sum of its two arguments: lambda a, b: a+b. Here the comma separated variables between the lambda and the colon are the function's arguments and the part after the colon is the return type of the anonymous function. Lambda forms can be used wherever function objects are required. They are syntactically restricted to a single expression. Semantically, they are just syntactic sugar for a normal function definition. Like nested function definitions, lambda forms can reference variables from the containing scope: //The Code will be here. ------------------ Additionally adding the link to functional programming HowTO in the first sentence "commonly found in functional programming languages" can help the first-time reader and those unfamiliar with functional paradigm to get acquainted with functional programming in Python's context. If someone reads it can someone send a reply to this about where this mailing list can be browsed. I sent a previous one also but wasn't able to follow through because I didn't know where to browse this mailing list. Aseem Bansal (aseembansal at ymail) (asmbansal2 at gmail)

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[issue18512] sys.stdout.write does not allow bytes in Python 3.x
by Ezio Melotti Aug. 20, 2013

Aug. 20, 2013

Ezio Melotti added the comment: > A workaround is to perform sys.stdout.flush() before > sys.stdout.buffer.write(). FWIW you can just use print(..., flush=True) from 3.3+. ---------- _______________________________________ Python tracker <report(a)bugs.python.org> <http://bugs.python.org/issue18512> _______________________________________

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[issue18761] Fix internal doc references for the email package
by Serhiy Storchaka Aug. 19, 2013

Aug. 19, 2013

New submission from Serhiy Storchaka: Here is a preliminary patch (long lines are not wrapped yet) which fixes internal references in the documentation of the email package. ---------- assignee: docs@python components: Documentation files: refs.email.diff keywords: patch messages: 195406 nosy: barry, docs@python, eric.araujo, ezio.melotti, georg.brandl, r.david.murray, serhiy.storchaka priority: normal severity: normal stage: patch review status: open title: Fix internal doc references for the email package versions: Python 2.7, Python 3.3, Python 3.4 Added file: http://bugs.python.org/file31326/refs.email.diff _______________________________________ Python tracker <report(a)bugs.python.org> <http://bugs.python.org/issue18761> _______________________________________

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[issue18512] sys.stdout.write does not allow bytes in Python 3.x
by Juan Luis Boya García Aug. 19, 2013

Aug. 19, 2013

Juan Luis Boya García added the comment: Sorry for the late response, GMail's SPAM filter ate the replies. The main issue is sys.stdout being opened as text instead of binary. This fact is stated in the docs. http://docs.python.org/3/library/sys.html#sys.stdout In any case, there are some caveats worth noting: > You can do > sys.stdout.buffer.write(b"hello") This is problematic if both buffer and IOTextWrapper are used. For example: print("Hello", end=""); sys.stdout.buffer.write(b"World") That line may write `WorldHello` instead of `HelloWorld` (and it does indeed, at least in Linux implementation). Yes, an application should not do this in Python3, but using print() and writing to stdout were OK in Python2, which makes porting programs harder. A workaround is to perform sys.stdout.flush() before sys.stdout.buffer.write(). > (from the docs) > Using io.TextIOBase.detach(), streams can be made binary by default. > sys.stdout = sys.stdout.detach() This should help in cases where most output is binary, but it's worth noting that interactive shells (such as the builtin python or IPython) and debuggers (both pdb and ipdb) stop working when this is used. Also, it will probably break every function there that relies on sys.stdout being Unicode or binary depending on only the Python version. ---------- _______________________________________ Python tracker <report(a)bugs.python.org> <http://bugs.python.org/issue18512> _______________________________________

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Py_SetProgramName error
by Braden Aug. 19, 2013

Aug. 19, 2013

The Python3.3 embedding example says to use: [ http://docs.python.org/3.3/extending/embedding.html#very-high-level-embeddi… ] Py_SetProgramName(argv[0]); Which throws: error C2664: 'Py_SetProgramName' : cannot convert parameter 1 from 'char *' to 'wchar_t *' To fix this someone suggested the following code [ http://stackoverflow.com/a/18248800<http://stackoverflow.com/questions/18248343/c-python-3-binding> ] wchar_t progname[FILENAME_MAX + 1]; mbstowcs(progname, argv[0], strlen(argv[0]) + 1); Py_SetProgramName(progname); Regards, -- Braden Wentworth [ online director / code monkey ] [ www.labvc.com.au ]

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