Here is a bit of code: class A: def __init__(self, l=[]): self.l = l
class B: def __init__(self): self.l = [] a1 = A() a2 = A() b1 = B() b2 = B() a1.l += ['a1'] a2.l += ['a2'] b1.l += ['b1'] b2.l += ['b2'] print 'a1:', a1.__dict__, '0x%08x' % abs(id(a1.l)) print 'a2:', a2.__dict__, '0x%08x' % abs(id(a2.l)) print 'b1:', b1.__dict__, '0x%08x' % abs(id(b1.l)) print 'b2:', b2.__dict__, '0x%08x' % abs(id(b2.l)) That gives: a1: {'l': ['a1', 'a2']} 0x484db114 a2: {'l': ['a1', 'a2']} 0x484db114 b1: {'l': ['b1']} 0x484db174 b2: {'l': ['b2']} 0x484db2d4 This behaviour seems a bit strange, clearly list is class A is the same objects for both instances and I'm wondering if this is correct? Duncan ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Freevo-devel mailing list Freevo-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freevo-devel