Mailman 3 March 2014 - docs

[issue12832] The documentation for the print function should explain/point to how to control the sys.stdout encoding
by R. David Murray Oct. 25, 2020

Oct. 25, 2020

New submission from R. David Murray <rdmurray(a)bitdance.com>: A common problem encountered when using python3 is writing non-ascii to stdout. This will work fine if stdout is a terminal and the terminal encoding handles the characters, but will fail if stdout is later redirected to a pipe. The docs for sys.stdout and for print should contain or point to an explanation of why, and how to solve the problem (ie: how to set the encoding for sys.stdout/sys.stderr). Note that IMO it makes … [View More]

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[issue12174] Multiprocessing logging levels unclear
by JJeffries Oct. 22, 2020

Oct. 22, 2020

New submission from JJeffries <jamesjeffries1(a)gmail.com>: It is unclear without reference to the logging module where the multiprocessing logging levels fit in the normal logging provided by the logging module, even though it says above the table "The table below illustrates where theses fit in the normal level hierarchy. +----------------+----------------+ | Level | Numeric value | +================+================+ | ``SUBWARNING`` | 25 | +----------------+---… [View More]

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[issue13047] imp.find_module("") and imp.find_module(".")
by Arfrever Frehtes Taifersar Arahesis Oct. 22, 2020

Oct. 22, 2020

New submission from Arfrever Frehtes Taifersar Arahesis <Arfrever.FTA(a)GMail.Com>: It's undocumented that imp.find_module("") and imp.find_module(".") try to find __init__.py. There is also a small difference in behavior between them. sys.path by default contains "" as the first element, which is sufficient for imp.find_module("."), but not for imp.find_module(""): $ mkdir /tmp/imp_tests $ cd /tmp/imp_tests $ touch __init__.py $ python3.3 -c 'import imp, sys; print(repr(sys.path[0])); … [View More]

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[issue14979] pdb: Link to source
by anatoly techtonik Oct. 22, 2020

Oct. 22, 2020

New submission from anatoly techtonik <techtonik(a)gmail.com>: http://docs.python.org/library/pdb.html#pdb.Pdb Documentation for pdb says: "The debugger is extensible — it is actually defined as the class Pdb. This is currently undocumented but easily understood by reading the source." There should a link to the source. ---------- assignee: docs@python components: Documentation, Library (Lib) messages: 162074 nosy: docs@python, techtonik priority: normal severity: normal status: open … [View More]

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[issue19438] Where is NoneType in Python 3?
by mpb Oct. 21, 2020

Oct. 21, 2020

New submission from mpb: types.NoneType seems to have disappeared in Python 3. This is probably intentional, but I cannot figure out how to test if a variable is of type NoneType in Python 3. Specifically, I want to write: assert type (v) in ( bytes, types.NoneType ) Yes, I could write: assert v is None or type (v) is bytes But the first assert statement is easier to read (IMO). Here are links to various Python 3 documentation about None: [1] http://docs.python.org/3/library/stdtypes.… [View More]

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[issue18280] Documentation is too personalized
by Serhiy Storchaka Sept. 19, 2020

Sept. 19, 2020

New submission from Serhiy Storchaka: Some documentation files contain a number of I/my/me. Looks like they grew from personal modules and personal articles. Perhaps the official documentation needs more depersonalized style. Here is full list of such files: Doc/c-api/exceptions.rst Doc/c-api/long.rst Doc/distutils/builtdist.rst Doc/extending/extending.rst Doc/extending/windows.rst Doc/howto/argparse.rst Doc/howto/curses.rst Doc/howto/functional.rst Doc/howto/regex.rst Doc/howto/sockets.rst … [View More]

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[issue13828] Further improve casefold documentation
by Jim Jewett Aug. 24, 2020

Aug. 24, 2020

New submission from Jim Jewett <jimjjewett(a)gmail.com>: > http://hg.python.org/cpython/rev/0b5ce36a7a24 > changeset: 74515:0b5ce36a7a24 > + Casefolding is similar to lowercasing but more aggressive because it is > + intended to remove all case distinctions in a string. For example, the German > + lowercase letter ``'ß'`` is equivalent to ``"ss"``. Since it is already > + lowercase, :meth:`lower` would do nothing to ``'ß'``; :meth:`… [View More]

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[issue17805] No such class: multiprocessing.pool.AsyncResult
by Takafumi Arakaki July 3, 2020

July 3, 2020

New submission from Takafumi Arakaki: Document mentions AsyncResult but there is no such class. http://docs.python.org/2/library/multiprocessing.html#multiprocessing.pool.… You can check it by simply running: python -c 'from multiprocessing.pool import AsyncResult' I think it means ApplyResult so I made a patch (attached). Note that there managers.py also uses name 'AsyncResult': % hg grep AsyncResult Doc/library/multiprocessing.rst:83232:.. class:: AsyncResult Lib/multiprocessing/managers.… [View More]

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[issue17589] Make documentation about macros in C API explicit about rvalue vs statement
by Larry Hastings June 25, 2020

June 25, 2020

New submission from Larry Hastings: CPython API "functions" implemented as macros can expand into either rvalues or statements. Most expand into statements (often using the do {} while (0) syntactic sugar trick), but occasionally they're legal as rvalues. As of this writing Py_INCREF works as an rvalue. But discussion on another tracker issue (#17206) proposes changing the implementation in such a way that it will only be usable as a statement. Although it's mildly unlikely, it's certainly … [View More]

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[issue20224] C API docs need a clear "defining custom extension types" section
by Nick Coghlan June 25, 2020

June 25, 2020

New submission from Nick Coghlan: The main C API docs don't clearly explain how to define new types, so people almost always cargo cult an existing legacy type definition instead (I know I do). The extending and embedding docs have a guide (http://docs.python.org/3/extending/newtypes.html), but that describes the old legacy method based on static type declarations. New code should instead use the dynamic mechanism defined in PEP 384 (http://www.python.org/dev/peps/pep-0384/#type-objects). … [View More]

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