class Stuff: def __init__(self): self.a = 0 self.b = 'b' self.c = [1,2,3] self.d = 100000000000000 s = Stuff() s.a += 10 s.b += 'dog' s.c += [9,10] s.d += 10000 print s.a print s.b print s.c print s.d