Bugs item #1684943, was opened at 2007-03-21 07:50
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Category: Parser/Compiler
Group: Python 2.4
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Jørgen Frøjk Kjærsgaard (jfroejk)
Assigned to: Nobody/Anonymous (nobody)
Summary: Keyword arguments to __init__() of a subclass of set

Initial Comment:
Passing a keyword argument to a subclass of the built-in class "set" causes a 
TypeError in Python 2.4.2 and newer but not in 2.4.0. Example:

class Test(set):
    def __init__(self, a=0):
        self.add(a)

t = Test(a=0)

In Python 2.4.0 it works as expected whereas in 2.4.2 and 2.4.4, it yields:

Traceback (most recent call last):
  File "<stdin>", line 1, in ?
TypeError: set() does not take keyword arguments

I don't pass a keyword argument to set.__init__() but to its subclass!


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You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=105470&aid=1684943&group_id=5470
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