Mailman 3 November 2014 - docs

[issue22525] ast.literal_eval() doesn't do what the documentation says
by Raymond Hettinger Nov. 5, 2014

Nov. 5, 2014

Raymond Hettinger added the comment: Georg's proposed wording reads well and is clearer than the current wording. The patch is ready to apply. ---------- nosy: +rhettinger _______________________________________ Python tracker <report(a)bugs.python.org> <http://bugs.python.org/issue22525> _______________________________________

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[issue22790] some class attributes missing from dir(Class)
by Georg Brandl Nov. 4, 2014

Nov. 4, 2014

Georg Brandl added the comment: > Why are __flags__, __basicsize__, __itemsize__, __dictoffset__, and __weakrefoffset__ interesting? I haven't said they are, but on the other hand I don't see why consistency is a bad thing. ---------- _______________________________________ Python tracker <report(a)bugs.python.org> <http://bugs.python.org/issue22790> _______________________________________

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[issue22790] some class attributes missing from dir(Class)
by Ethan Furman Nov. 4, 2014

Nov. 4, 2014

Ethan Furman added the comment: Why are __flags__, __basicsize__, __itemsize__, __dictoffset__, and __weakrefoffset__ interesting? I agree with Georg about the others. ---------- nosy: +ethan.furman _______________________________________ Python tracker <report(a)bugs.python.org> <http://bugs.python.org/issue22790> _______________________________________

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[issue22790] some class attributes missing from dir(Class)
by Georg Brandl Nov. 4, 2014

Nov. 4, 2014

Georg Brandl added the comment: > So, dir(C) contains '__mro__', but not 'mro'? That can be discussed. But I would argue that at least __name__, __bases__ and __qualname__ are interesting attributes for the user. Same for methods like __subclasses__(). Otherwise, it's quite ironic to prevent attributes that allow introspection in the first place from being displayed in one of the main features used for introspection. ---------- _______________________________________ Python tracker <report(a)bugs.python.org> <http://bugs.python.org/issue22790> _______________________________________

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[issue22790] some class attributes missing from dir(Class)
by Amaury Forgeot d'Arc Nov. 4, 2014

Nov. 4, 2014

Amaury Forgeot d'Arc added the comment: So, dir(C) contains '__mro__', but not 'mro'? I'm -1 on the change. >From https://docs.python.org/3.4/library/functions.html#dir : """ Note Because dir() is supplied primarily as a convenience for use at an interactive prompt, it tries to supply an interesting set of names more than it tries to supply a rigorously or consistently defined set of names, and its detailed behavior may change across releases. For example, metaclass attributes are not in the result list when the argument is a class. """ dir(sys) does not list its __str__ method, even if sys.__str__() works, because returning only the explicit content of the module is more interesting to the user. Likewise, the implementation of dir(__class__) returns the methods and attributes of *instances* because [someone decided that] it's the most relevant info for the user. ---------- _______________________________________ Python tracker <report(a)bugs.python.org> <http://bugs.python.org/issue22790> _______________________________________

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[issue22790] some class attributes missing from dir(Class)
by Arfrever Frehtes Taifersar Arahesis Nov. 4, 2014

Nov. 4, 2014

Arfrever Frehtes Taifersar Arahesis added the comment: __base__ exists also in Jython and PyPy (#22456). I think that all attributes could be listed. ---------- _______________________________________ Python tracker <report(a)bugs.python.org> <http://bugs.python.org/issue22790> _______________________________________

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[issue22792] string replace() not documented
by R. David Murray Nov. 4, 2014

Nov. 4, 2014

R. David Murray added the comment: To clarify for the OP: in python3 the 'string' module does not contain a replace function, whereas in 2.7 it did. 'replace' is only a method on str in python3, whereas in 2.7 it is both an str method and a function in the string module. ---------- nosy: +r.david.murray _______________________________________ Python tracker <report(a)bugs.python.org> <http://bugs.python.org/issue22792> _______________________________________

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[issue22790] some class attributes missing from dir(Class)
by eryksun Nov. 4, 2014

Nov. 4, 2014

eryksun added the comment: __doc__ and __module__ are also getsets (to support built-in types), but it's nothing to worry about since the attributes can't be deleted. I think the most value added here is for listing __mro__ and the others that Georg mentioned. Should the following attributes be blacklisted from dir() as CPython implementation details? __base__ __flags__ __basicsize__ __itemsize__ __dictoffset__ __weakrefoffset__ It's not as if people will miss what they never had. ---------- _______________________________________ Python tracker <report(a)bugs.python.org> <http://bugs.python.org/issue22790> _______________________________________

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[issue22790] some class attributes missing from dir(Class)
by Georg Brandl Nov. 4, 2014

Nov. 4, 2014

Changes by Georg Brandl <georg(a)python.org>: ---------- Removed message: http://bugs.python.org/msg230614 _______________________________________ Python tracker <report(a)bugs.python.org> <http://bugs.python.org/issue22790> _______________________________________

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[issue22790] some class attributes missing from dir(Class)
by Georg Brandl Nov. 4, 2014

Nov. 4, 2014

Georg Brandl added the comment: Basically beacuse with the current patch, this is because object_dir also does merge_class_dict, to get class attributes. This means that attributes like __qualname__ would show up in dir(instance), but are not actually available on the instance. Fixing this requires a more substantial rewrite, but is certainly the right way if this is accepted at all. ---------- _______________________________________ Python tracker <report(a)bugs.python.org> <http://bugs.python.org/issue22790> _______________________________________

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