Mailman 3 November 2012 - docs

[issue15657] Error in Python 3 docs for PyMethodDef
by Sandro Tosi Feb. 22, 2017

Feb. 22, 2017

New submission from Sandro Tosi: Hello, it has been reported at http://mail.python.org/pipermail/docs/2012-April/008215.html but given it raises some question whether it's a bug in the doc or in the code, i'd rather report the issue here and hear what other think: >>> In the Python 3.2.2 documentation (and earlier Python 3 versions), in the Python/C API Reference Manual, chapter Object Implementation Support, the documentation for PyMethodDef says: The ml_flags field is a bitfield which can include the following flags. The individual flags indicate either a calling convention or a binding convention. Of the calling convention flags, only METH_VARARGS and METH_KEYWORDS can be combined (but note that METH_KEYWORDS alone is equivalent to METH_VARARGS | METH_KEYWORDS). The bit in the parenthetical is incorrect. If you take a look at PyCFunction_Call in Objects/methodobject.c, you will find a switch for METH_VARARGS | METH_KEYWORDS, but no switch for METH_KEYWORDS. Hence, using METH_KEYWORDS will land you with a SystemError that complains about METH_OLDARGS. This is either a bug in the documentation, or a bug in Python. In this case, since the code has persisted through three major revisions of Python 3, I suggest that the bug _is_ in the documentation (whether it should be or not), since changing the code for this at this late date means a programmer has to use METH_VARARGS | METH_KEYWORDS anyway for compatibility. It may be work pointing out specifically in the documentation that just using METH_KEYWORDS will not work. <<< ---------- assignee: docs@python components: Documentation messages: 168226 nosy: docs@python, sandro.tosi priority: normal severity: normal stage: patch review status: open title: Error in Python 3 docs for PyMethodDef versions: Python 3.2, Python 3.3 _______________________________________ Python tracker <report(a)bugs.python.org> <http://bugs.python.org/issue15657> _______________________________________

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[issue10938] Undocumented option for datetime.strftime: %s
by Humberto Diogenes Feb. 22, 2017

Feb. 22, 2017

New submission from Humberto Diogenes <humberto(a)digi.com.br>: On some systems, datetime.strftime() accepts a %s format string that returns epoch / UNIX timestamp, but this behavior is not documented at http://docs.python.org/library/datetime.html Python 2.7 (r27:82508, Jul 3 2010, 21:12:11) [GCC 4.0.1 (Apple Inc. build 5493)] on darwin Type "help", "copyright", "credits" or "license" for more information. >>> import datetime >>> datetime.datetime.now().strftime('%s') '1295376929' ---------- assignee: docs@python components: Documentation messages: 126481 nosy: docs@python, hdiogenes priority: normal severity: normal status: open title: Undocumented option for datetime.strftime: %s versions: Python 2.7 _______________________________________ Python tracker <report(a)bugs.python.org> <http://bugs.python.org/issue10938> _______________________________________

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[issue11924] Pickle and copyreg modules doesn't document the interface
by Jesús Cea Avión Feb. 18, 2017

Feb. 18, 2017

New submission from Jesús Cea Avión <jcea(a)jcea.es>: Python 3.2 here. "copyreg" module documentation says "See the pickle module for more details on the interface expected of function and constructor.", but I don't see any useful "copyreg" reference in pickle documentation. Some examples would be useful here, too. ---------- assignee: docs@python messages: 134416 nosy: docs@python, jcea priority: normal severity: normal status: open title: Pickle and copyreg modules doesn't document the interface versions: Python 2.7, Python 3.2, Python 3.3 _______________________________________ Python tracker <report(a)bugs.python.org> <http://bugs.python.org/issue11924> _______________________________________

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[issue11173] Undocumented public APIs in Python 3.2
by Marc-Andre Lemburg Feb. 14, 2017

Feb. 14, 2017

New submission from Marc-Andre Lemburg <mal(a)egenix.com>: Mark Shannon on python-dev: The following API functions were removed from 3.1.3: PyAST_Compile PyCObject_AsVoidPtr PyCObject_FromVoidPtr PyCObject_FromVoidPtrAndDesc PyCObject_GetDesc PyCObject_Import PyCObject_SetVoidPtr PyCode_CheckLineNumber Py_CompileStringFlags PyEval_CallObject PyOS_ascii_atof PyOS_ascii_formatd PyOS_ascii_strtod PyThread_exit_prog PyThread__PyThread_exit_prog PyThread__PyThread_exit_thread PyUnicode_SetDefaultEncoding And the following were added to 3.2, of which only 2 are documented: PyArg_ValidateKeywordArguments PyAST_CompileEx Py_CompileString Py_CompileStringExFlags PyErr_NewExceptionWithDoc (documented) PyErr_SyntaxLocationEx PyErr_WarnFormat PyFrame_GetLineNumber PyImport_ExecCodeModuleWithPathnames PyImport_GetMagicTag PyLong_AsLongLongAndOverflow (documented) PyModule_GetFilenameObject Py_SetPath PyStructSequence_GetItem PyStructSequence_NewType PyStructSequence_SetItem PySys_AddWarnOptionUnicode PySys_AddXOption PySys_FormatStderr PySys_FormatStdout PySys_GetXOptions PyThread_acquire_lock_timed PyType_FromSpec PyUnicode_AsUnicodeCopy PyUnicode_AsWideCharString PyUnicode_EncodeFSDefault PyUnicode_FSDecoder Py_UNICODE_strcat Py_UNICODE_strncmp Py_UNICODE_strrchr PyUnicode_TransformDecimalToASCII For added confusion PySys_SetArgvEx is documented as new in 3.2, but exists in 3.1.3 Note that this only include functions. The API also includes a number of macros such as Py_False and Py_RETURN_FALSE, types , and data like PyBool_Type. ---------- assignee: docs@python components: Documentation messages: 128294 nosy: docs@python, lemburg priority: normal severity: normal status: open title: Undocumented public APIs in Python 3.2 versions: Python 3.2 _______________________________________ Python tracker <report(a)bugs.python.org> <http://bugs.python.org/issue11173> _______________________________________

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[issue11726] linecache becomes specific to Python scripts in Python 3
by STINNER Victor Feb. 9, 2017

Feb. 9, 2017

New submission from STINNER Victor <victor.stinner(a)haypocalc.com>: linecache document doesn't tell that the module reads the #coding:xxx cookie to get the encoding of the Python file. linecache reads this cookie since 41665 (May 09 2007). "The linecache module allows one to get any line from any file, ..." => "any file"! And the example uses /etc/passwd which is not a Python file. Not only it reads the #coding:xxx cookie, but updatecache() tries also a PEP 302 loader to read the file. linecache should be marked as very specific to Python scripts, or it should be patched to become more generic (don't read the cookie / use loader by default). Note: the locale encoding may change between to calls to the linecache module. ---------- assignee: docs@python components: Documentation, Library (Lib) messages: 132641 nosy: docs@python, haypo priority: normal severity: normal status: open title: linecache becomes specific to Python scripts in Python 3 versions: Python 3.1, Python 3.2, Python 3.3 _______________________________________ Python tracker <report(a)bugs.python.org> <http://bugs.python.org/issue11726> _______________________________________

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[issue13196] subprocess: undocumented if shell=True is necessary to find executable in Windows PATH
by anatoly techtonik Feb. 4, 2017

Feb. 4, 2017

New submission from anatoly techtonik <techtonik(a)gmail.com>: The reason I ask is this changeset - http://code.google.com/p/spyderlib/source/detail?spec=svne5d86b685619a470d5… - seems like without shell=True, subprocess.Popen is unable to find Mercurial executable in PATH. ---------- assignee: docs@python components: Documentation messages: 145664 nosy: docs@python, techtonik priority: normal severity: normal status: open title: subprocess: undocumented if shell=True is necessary to find executable in Windows PATH _______________________________________ Python tracker <report(a)bugs.python.org> <http://bugs.python.org/issue13196> _______________________________________

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[issue11670] configparser read_file now iterates over f, docs still say it calls readline
by Larry Hastings Jan. 29, 2017

Jan. 29, 2017

New submission from Larry Hastings <larry(a)hastings.org>: The documentation for configparser.RawConfigParser.read_file() states: "Read and parse configuration data from the file or file-like object in f (only the readline() method is used)." This was true in Python 3.1 and before. However in 3.2 the implementation of read_file changed. It no longer calls readline(). Instead, it iterates over the file object. Whoever made this change neglected to * fix the docs, or apparently * tell anybody. I've got the commit bit, so I'd be happy to fix this. I'd like to add it to the What's New In Python 3.2 as well; there's a section about configparser changes that would be perfect. Is it permissible to change the What's New document ex post facto like this? (Adding rhettinger so he can answer this.) ---------- assignee: docs@python components: Documentation messages: 132075 nosy: docs@python, larry, rhettinger priority: low severity: normal stage: needs patch status: open title: configparser read_file now iterates over f, docs still say it calls readline type: behavior versions: Python 3.2 _______________________________________ Python tracker <report(a)bugs.python.org> <http://bugs.python.org/issue11670> _______________________________________

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[issue15997] NotImplemented needs to be documented
by Max Jan. 22, 2017

Jan. 22, 2017

New submission from Max: Quoting from http://docs.python.org/reference/datamodel.html#the-standard-type-hierarchy: NotImplemented This type has a single value. There is a single object with this value. This object is accessed through the built-in name NotImplemented. Numeric methods and rich comparison methods may return this value if they do not implement the operation for the operands provided. (The interpreter will then try the reflected operation, or some other fallback, depending on the operator.) Its truth value is true. This is not a sufficient description of NotImplemented behavior. What does it mean "reflected operation" (I assume it is other.__eq__(self), but it needs to be clarified), and what does it mean "or some other fallback" (wouldn't developers need to know?). It also doesn't state what happens if the reflected operation or the fallback again return NotImplemented. The rest of the documentation doesn't seem to talk about this either, despite several mentions of NotImplemented, with references to other sections. This is particularly serious problem because Python's behavior changed in this respect not that long ago. ---------- assignee: docs@python components: Documentation messages: 170860 nosy: docs@python, max priority: normal severity: normal status: open title: NotImplemented needs to be documented type: enhancement versions: Python 3.2 _______________________________________ Python tracker <report(a)bugs.python.org> <http://bugs.python.org/issue15997> _______________________________________

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[issue15527] Double parents in functions references
by Serhiy Storchaka Jan. 14, 2017

Jan. 14, 2017

New submission from Serhiy Storchaka: :c:func:`PyMem_Malloc(n)` on Doc/c-api/memory.rst:109 rendered in HTML as <tt class="xref c c-func docutils literal"><span class="pre">PyMem_Malloc(1)()</span></tt> (note double parents). There are many other examples on this and other pages. The issue is actual for all modern versions of Python. ---------- assignee: docs@python components: Documentation messages: 167137 nosy: docs@python, storchaka priority: normal severity: normal status: open title: Double parents in functions references versions: Python 2.7, Python 3.2, Python 3.3 _______________________________________ Python tracker <report(a)bugs.python.org> <http://bugs.python.org/issue15527> _______________________________________

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[issue16026] csv.DictReader argument names documented incorrectly
by Peter Eisentraut Jan. 7, 2017

Jan. 7, 2017

New submission from Peter Eisentraut: The documentation for the csv.DictReader constructor is .. class:: DictReader(csvfile, fieldnames=None, restkey=None, restval=None, dialect='excel', *args, **kwds) but the implementation is def __init__(self, f, fieldnames=None, restkey=None, restval=None, dialect="excel", *args, **kwds): The name of the first argument is documented incorrectly, leading to surprise errors when attempting to use key word arguments. ---------- assignee: docs@python components: Documentation, Library (Lib) messages: 171161 nosy: docs@python, petere priority: normal severity: normal status: open title: csv.DictReader argument names documented incorrectly type: behavior versions: Python 2.6, Python 2.7, Python 3.1, Python 3.2, Python 3.3, Python 3.4 _______________________________________ Python tracker <report(a)bugs.python.org> <http://bugs.python.org/issue16026> _______________________________________

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