[Python-bugs-list] [ python-Bugs-805304 ] super instances don't support item assignment

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Bugs item #805304, was opened at 2003-09-12 16:10
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Category: Python Interpreter Core
Group: None
Status: Open
Resolution: None
Priority: 6
Submitted By: Fred L. Drake, Jr. (fdrake)
Assigned to: Nobody/Anonymous (nobody)
Summary: super instances don't support item assignment

Initial Comment:
This snippet produces a TypeError in Python 2.2.3, 2.3,

and CVS:



class C(object):

    def __setitem__(self, name, value):

        print (name, value)



class D(C):

    def __setitem__(self, name, value):

        super(D, self)[name] = value



d = D()

d['foo'] = 'bar'



Here's the traceback:



Traceback (most recent call last):

  File "/home/fdrake/tmp/setitem.py", line 10, in ?

    d['foo'] = 'bar'

  File "/home/fdrake/tmp/setitem.py", line 7, in

__setitem__

    super(D, self)[name] = value

TypeError: object does not support item assignment



The problem appears to be that the item assignment

isn't getting mapped to the __setitem__ of the base

class, so this is probably somewhere deep in

Objects/typeobject.c.

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