Bugs item #1427789, was opened at 2006-02-08 13:55
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Category: Python Interpreter Core
Group: Python 2.4
Status: Open
Resolution: None
Priority: 5
Submitted By: Jason (griminventions)
Assigned to: Nobody/Anonymous (nobody)
Summary: List not initialized if used as default argument
Initial Comment:
class A( object ):
def __init__( self, someList = [] ):
self.someList = someList
if __name__ == "__main__":
for i in range( 10 ):
a = A()
a.someList.append( "abc" )
print a.someList
Instead of each instance of A getting an empty list, it
is somehow the same list as the previous instance of A.
It will not occur with the following change:
class A( object ):
def __init__( self ):
self.someList = []
I'm using Windows XP, Python 2.4.1.
[EMAIL PROTECTED]
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