[Python-bugs-list] [ python-Bugs-451638 ] [2.2a] delitem undefined for dictionary
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Thu, 16 Aug 2001 10:57:24 -0700
Bugs item #451638, was opened at 2001-08-16 10:48
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Category: Type/class unification
Group: Python 2.2
>Status: Closed
>Resolution: Duplicate
Priority: 5
Submitted By: Allan Crooks (amc1)
Assigned to: Guido van Rossum (gvanrossum)
Summary: [2.2a] delitem undefined for dictionary
Initial Comment:
Hi,
Header pretty much says what the problem is.
It's also undefined for list. The following code
should illustrate it clearly enough
>>> class d2(dictionary):
... def __setitem__(self, key, value):
... if value==0:
... del self[key]
... else:
... dictionary.__setitem__(self, key,
value)
...
>>> d = d2()
>>> d.update({'a': 5})
>>> d
{'a': 5}
>>> d['a'] = 10
>>> d
{'a': 10}
>>> d['a'] = 0
Traceback (most recent call last):
File "<stdin>", line 1, in ?
File "<stdin>", line 4, in __setitem__
SystemError: NULL object passed to Py_BuildValue
>>>
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>Comment By: Guido van Rossum (gvanrossum)
Date: 2001-08-16 10:57
Message:
Logged In: YES
user_id=6380
This is a duplicate of bug 442791. It's fixed in CVS.
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