Bugs item #1275719, was opened at 2005-08-29 16:54
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Category: Python Interpreter Core
Group: Python 2.4
Status: Open
Resolution: None
Priority: 5
Submitted By: Antoine Pitrou (pitrou)
Assigned to: Nobody/Anonymous (nobody)
Summary: discrepancy between str.__cmp__ and unicode.__cmp__
Initial Comment:
I had the surprise, while wanted to use str.__cmp__ as
the cmp argument to list.sort(), that it seems buggy
compared to unicode.__cmp__, and that these methods
seem implemented quite differently (they have a
different type):
$ python
Python 2.4.1 (#2, Aug 25 2005, 18:20:57)
[GCC 4.0.1 (4.0.1-2mdk for Mandriva Linux release
2006.0)] on linux2
Type "help", "copyright", "credits" or "license" for
more information.
>>> unicode.__cmp__
<slot wrapper '__cmp__' of 'unicode' objects>
>>> str.__cmp__
<method-wrapper object at 0xb7a164ac>
>>> u'a'.__cmp__(u'b')
-1
>>> 'a'.__cmp__('b')
Traceback (most recent call last):
File "<stdin>", line 1, in ?
AttributeError: 'str' object has no attribute '__cmp__'
>>> unicode.__cmp__(u'a', u'b')
-1
>>> str.__cmp__('a', 'b')
Traceback (most recent call last):
File "<stdin>", line 1, in ?
TypeError: expected 1 arguments, got 2
Am I missing something ?
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