# -*- coding: utf-8 -*- class Obj: def __init__(self, num): self.num = num self.var = self.funct() def funct(self, array = []): array += [1,2,3] return array def main(): obj1 = Obj(1) print (obj1.num, obj1.var) # prints: 1 [1, 2, 3] obj2 = Obj(2) print (obj1.num, obj1.var) # prints: 1 [1, 2, 3, 1, 2, 3] print (obj2.num, obj2.var) # prints: 2 [1, 2, 3, 1, 2, 3] if __name__ == "__main__": main()