[Python-bugs-list] [ python-Bugs-456420 ] no __methods__ for lists, strings etc.
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Mon, 03 Dec 2001 09:07:28 -0800
Bugs item #456420, was opened at 2001-08-29 00:32
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>Category: Documentation
Group: Python 2.2
Status: Open
Resolution: None
Priority: 5
Submitted By: Detlef Lannert (lannert)
>Assigned to: Fred L. Drake, Jr. (fdrake)
Summary: no __methods__ for lists, strings etc.
Initial Comment:
With Python 2.2a2+ from cvs, [].__methods__ fails with
AttributeError: 'list' object has no attribute
'__methods__'
Same for a string or a dictionary.
The Library Reference section on "Special Attributes"
(2.1.9 here) still recommends [].__methods__ for
finding out about an object's methods.
dir([]) returns [] and doesn't list the attributes
either.
OK, I can use [].__class__.__dict__.keys() -- but it's
not very intuitive ...
Detlef
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>Comment By: Tim Peters (tim_one)
Date: 2001-12-03 09:07
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We haven't gotten more complaints about this, so changed to
Docs and reassigned to Fred: __methods__ and __members__
are history in 2.2. I'm not sure where they were
documented before, though!
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Comment By: Tim Peters (tim_one)
Date: 2001-09-05 12:26
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I want more feedback from 2.2a3 first. If __methods__ and
__members__ are going to stay dead, then the docs need to
be changed, but I'm not yet sure enough that they're going
to stay dead.
This particular report seemed driven to try them because of
2.2a2 dir() behavior, so I *hope* the 2.2a3 dir() changes
will be enough that we don't see another of these.
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Comment By: Guido van Rossum (gvanrossum)
Date: 2001-09-05 11:15
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Maybe this should be reclassified as a doc bug and assigned
to Fred?
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Comment By: Tim Peters (tim_one)
Date: 2001-08-29 15:10
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Reassigned to me. __members__ and __methods__ were always
ugly hacks, and we'd like to get rid of them. I'm making
dir() "smarter" again, so that dir([]) will be more
informative (see bug 449989).
Until then, try using dir(type([])) (more generally, dir
(type(object)) instead of the atrocious
[].__class__.__dict__.keys().
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