[Patches] [ python-Patches-722462 ] __class__ assignment for list and dict

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Patches item #722462, was opened at 2003-04-16 08:29
Message generated for change (Comment added) made by gvanrossum
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Category: Core (C code)
Group: Python 2.3
>Status: Closed
>Resolution: Rejected
Priority: 5
Submitted By: Jiba (jiba)
Assigned to: Nobody/Anonymous (nobody)
Summary: __class__ assignment for list and dict

Initial Comment:
This patch fixes the bug #712975
It also fixes an error: when calling
compatible_for_assignment() in object_set_class(), old
and new arguments were reversed (no consequence, but
quite confusing).

The following is now allowed:
 - __class__ assignment on a list or a dict, as long as
the new type is a subtype whose subtype_dealloc will
call the list / dict dealloc,
 - __class__ assignment on a subtype of list or dict,
as long as the subtype have:
   - no new slots
   - no weaklist
   - no dict
   - no __del__

test_class_assignment.py is a PyUnit test case for this
feature.


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>Comment By: Guido van Rossum (gvanrossum)
Date: 2003-04-16 10:18

Message:
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I'm rejecting this; it's too complicated and I don't care
about the functionality. Sorry.

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