[Patches] [ python-Patches-1692335 ] Move initial args assignment to BaseException.__new__

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Patches item #1692335, was opened at 2007-04-01 15:46
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Category: Core (C code)
Group: Python 2.5
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Žiga Seilnacht (zseil)
Assigned to: Nobody/Anonymous (nobody)
Summary: Move initial args assignment to BaseException.__new__

Initial Comment:
Pickling exceptions fails when an Exception class
requires an argument in the constructor, but doesn't
call its base class' constructor.  See this mail
for details:

http://mail.python.org/pipermail/python-dev/2007-April/072416.html

This patch simply moves initial args assignment to
BaseException.__new__. This should fix most of the
problems, because it is very unlikely that an
exception overwrites the __new__ method; exceptions
used to be old style classes, which don't support
the __new__ special method.

The args attribute is still overwritten in all the
__init__ methods, so there shouldn't be any backward
compatibility problems.



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