[Python-bugs-list] [ python-Bugs-467331 ] ClassType.__doc__ always None

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Bugs item #467331, was opened at 2001-10-02 15:22
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http://sourceforge.net/tracker/?func=detail&atid=105470&aid=467331&group_id=5470

Category: Python Interpreter Core
Group: Python 2.2
>Status: Closed
>Resolution: Fixed
Priority: 5
Submitted By: Tim Peters (tim_one)
Assigned to: Tim Peters (tim_one)
Summary: ClassType.__doc__ always None

Initial Comment:
The docstring for a new-style class is too hard to dig 
out:

>>> class C(object):
...     "Hi.  I'm C's docstring."
...
>>> C.__doc__              # no luck
>>> getattr(C, "__doc__")  # no luck
>>> C.__dict__['__doc__']  # bingo
"Hi.  I'm C's docstring."
>>>

Note that in restricted mode, you can't eveb get at 
C.__dict__ (but we don't want to hide the docstring, 
right?).

If the cause+cure for this isn't instantly known you, 
assign it back to me and I'll dig into it.

Note that things like int.__doc__ and file.__doc__ 
work fine; it appears to be only user-defined types 
that suffer here.

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>Comment By: Tim Peters (tim_one)
Date: 2001-10-03 22:29

Message:
Logged In: YES 
user_id=31435

Fixed, in the way you thought it would be:

Lib/test/test_descr.py; new revision: 1.82
Lib/test/test_doctest2.py; new revision: 1.3
Objects/typeobject.c; new revision: 2.87

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Comment By: Guido van Rossum (gvanrossum)
Date: 2001-10-02 16:21

Message:
Logged In: YES 
user_id=6380

I'm guessing this is because there's a tp_doc slot in the
type object but that's never assigned to in type_new.  Enjoy
learning about type_new!

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