Bugs item #1520327, was opened at 2006-07-11 03:40
Message generated for change (Comment added) made by gbrandl
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Category: Python Interpreter Core
Group: Python 2.5
>Status: Closed
>Resolution: Invalid
Priority: 5
Submitted By: Milind (t-milich)
Assigned to: Nobody/Anonymous (nobody)
Summary: __missing__ does not get called
Initial Comment:
On the last step a[10] we expect 100
>>> class A(dict):
... pass
...
>>> a = A({1:2})
>>> def foo(a,b): return 100
...
>>> a.__missing__ = foo
>>> a[1]
2
>>> a.__missing__(10,20)
100
>>> a[10]
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
KeyError: 10
----------------------------------------------------------------------
>Comment By: Georg Brandl (gbrandl)
Date: 2006-07-11 07:01
Message:
Logged In: YES
user_id=849994
Methods are looked up on the type, not the instance. Add
your __missing__ method to A to make it work.
----------------------------------------------------------------------
You can respond by visiting:
https://sourceforge.net/tracker/?func=detail&atid=105470&aid=1520327&group_id=5470
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