[New-bugs-announce] [issue10549] help(cls1) breaks when cls1 has staticmethod(cls2) attribute

[Milko Krachounov]

New submission from Milko Krachounov <python at milko.3mhz.net>:

If I make a class B, and add staticmethod(A) as an attribute when B is another class, help(B) breaks. The issue appears with Python 2.6.6, trunk, 3.1.3c1, and py3k SVN.

Python 2.7 (trunk:86836, Nov 27 2010, 18:23:07) 
[GCC 4.4.5] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> class A(object):
...     pass
... 
>>> class B(object):
...     attr = staticmethod(A)
... 
>>> help(B)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/milko/Среда/Python/trunk/Lib/site.py", line 453, in __call__
    return pydoc.help(*args, **kwds)
  File "/home/milko/Среда/Python/trunk/Lib/pydoc.py", line 1720, in __call__
    self.help(request)
  File "/home/milko/Среда/Python/trunk/Lib/pydoc.py", line 1767, in help
    else: doc(request, 'Help on %s:')
  File "/home/milko/Среда/Python/trunk/Lib/pydoc.py", line 1508, in doc
    pager(render_doc(thing, title, forceload))
  File "/home/milko/Среда/Python/trunk/Lib/pydoc.py", line 1503, in render_doc
    return title % desc + '\n\n' + text.document(object, name)
  File "/home/milko/Среда/Python/trunk/Lib/pydoc.py", line 327, in document
    if inspect.isclass(object): return self.docclass(*args)
  File "/home/milko/Среда/Python/trunk/Lib/pydoc.py", line 1216, in docclass
    lambda t: t[1] == 'static method')
  File "/home/milko/Среда/Python/trunk/Lib/pydoc.py", line 1162, in spill
    name, mod, object))
  File "/home/milko/Среда/Python/trunk/Lib/pydoc.py", line 327, in document
    if inspect.isclass(object): return self.docclass(*args)
TypeError: docclass() takes at most 4 arguments (5 given)

Python 3.2a4+ (py3k:86836, Nov 27 2010, 18:35:01) 
[GCC 4.4.5] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> class A:
...     pass
... 
>>> class B:
...     attr = staticmethod(A)
... 
>>> help(B)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/milko/Среда/Python/py3k/Lib/site.py", line 447, in __call__
    return pydoc.help(*args, **kwds)
  File "/home/milko/Среда/Python/py3k/Lib/pydoc.py", line 1713, in __call__
    self.help(request)
  File "/home/milko/Среда/Python/py3k/Lib/pydoc.py", line 1760, in help
    else: doc(request, 'Help on %s:')
  File "/home/milko/Среда/Python/py3k/Lib/pydoc.py", line 1504, in doc
    pager(render_doc(thing, title, forceload))
  File "/home/milko/Среда/Python/py3k/Lib/pydoc.py", line 1499, in render_doc
    return title % desc + '\n\n' + text.document(object, name)
  File "/home/milko/Среда/Python/py3k/Lib/pydoc.py", line 319, in document
    if inspect.isclass(object): return self.docclass(*args)
  File "/home/milko/Среда/Python/py3k/Lib/pydoc.py", line 1214, in docclass
    lambda t: t[1] == 'static method')
  File "/home/milko/Среда/Python/py3k/Lib/pydoc.py", line 1159, in spill
    name, mod, object))
  File "/home/milko/Среда/Python/py3k/Lib/pydoc.py", line 319, in document
    if inspect.isclass(object): return self.docclass(*args)
TypeError: docclass() takes at most 4 positional arguments (5 given)

----------
components: Library (Lib)
messages: 122535
nosy: milko.krachounov
priority: normal
severity: normal
status: open
title: help(cls1) breaks when cls1 has staticmethod(cls2) attribute
versions: Python 2.6, Python 2.7, Python 3.1, Python 3.2

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue10549>
_______________________________________