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classmethod, staticmethod: expose wrapped function #50232

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gsakkis mannequin opened this issue May 9, 2009 · 6 comments
Closed

classmethod, staticmethod: expose wrapped function #50232

gsakkis mannequin opened this issue May 9, 2009 · 6 comments
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@amauryfa
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type-feature A feature request or enhancement

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@gsakkis
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Mannequin

gsakkis mannequin commented May 9, 2009

BPO 5982
Nosy @rhettinger, @terryjreedy, @amauryfa
Files
  • staticmethod_func.patch
    		•

    Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.

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    GitHub fields:

    assignee = 'https://github.com/amauryfa'
closed_at = <Date 2009-05-29.05:00:53.249>
created_at = <Date 2009-05-09.21:05:02.218>
labels = ['type-feature']
title = 'classmethod, staticmethod: expose wrapped function'
updated_at = <Date 2009-05-29.05:00:52.686>
user = 'https://bugs.python.org/gsakkis'

    bugs.python.org fields:

    activity = <Date 2009-05-29.05:00:52.686>
actor = 'rhettinger'
assignee = 'amaury.forgeotdarc'
closed = True
closed_date = <Date 2009-05-29.05:00:53.249>
closer = 'rhettinger'
components = []
creation = <Date 2009-05-09.21:05:02.218>
creator = 'gsakkis'
dependencies = []
files = ['14021']
hgrepos = []
issue_num = 5982
keywords = ['patch']
message_count = 6.0
messages = ['87511', '87839', '88101', '88102', '88109', '88498']
nosy_count = 4.0
nosy_names = ['rhettinger', 'terry.reedy', 'amaury.forgeotdarc', 'gsakkis']
pr_nums = []
priority = 'normal'
resolution = 'accepted'
stage = None
status = 'closed'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue5982'
versions = ['Python 2.7', 'Python 3.2']
    @gsakkis
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    gsakkis mannequin commented May 9, 2009

    It would be nice if classmethod/staticmethod exposed the wrapped
    function as a read-only attribute/property. Currently the function can
    be retrieved indirectly but it's obscure (and perhaps not always
    correct, I'm not sure):

    In [147]: def f():pass
    .....:

    In [148]: c = classmethod(f)

    In [149]: s = staticmethod(f)

    In [150]: c.__get__(1).im_func is f
    Out[150]: True

    In [151]: s.__get__(1) is f
    Out[151]: True

    @gsakkis gsakkis mannequin added the type-feature A feature request or enhancement label May 9, 2009
    @rhettinger rhettinger self-assigned this May 11, 2009
    @terryjreedy
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    Having to bind and unbind a classmethod to get at the function is
    definitely a bit weird, and also susceptible to changing implementation,
    but do you have a practical use case to motivate the effort needed?

    In Py3, '__func__' replaced 'im_func', and that is the name to use if
    the attribute is added. A change in 3.2 is at least as likely as a
    change in 2.7.

    @gsakkis
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    gsakkis mannequin commented May 19, 2009

    I don't remember the exact use case but it had to do with making a
    decorator robust enough to work for different kinds of callables (and a
    few common non-callables such as classmethod/staticmethod). It's not a
    show stopper by any means but I thought it would be easy (if not
    trivial) to implement, and regardless of actual use cases I don't see a
    reason to keep the function "hidden".

    @rhettinger
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    I am all for exposing the __func__ directly but don't immediately see
    how to do it.

    @rhettinger rhettinger removed their assignment May 20, 2009
    @amauryfa
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    Is there a difficulty I did not see? Here is a patch.

    @rhettinger
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    r73005 and r73006

    @ezio-melotti ezio-melotti transferred this issue from another repository Apr 10, 2022
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