Hi, when defining:
class A: def __init__(self, l=[]): self.l = l a = A() a.l.append(1111) b = A() print a.l I get the output [1111] instead of an empty list. I guess it's because the default value in the constructor is constructed once and whenever the constructor is called without l being specified. My work around is: class A: def __init__(self, l=None): if l == None: self.l = [] else: self.l = l Is there a way to take the first definition but force the constructor to create a new empty list every time it is called? Thanks in advance Rolf Wester -- http://mail.python.org/mailman/listinfo/python-list