class Parent1(object):
pass
class Parent2(object):
pass
class Child(Parent1):
pass
print(Child.__bases__)
print("Changing __bases__...")
Child.__bases__ = (Parent2,)
print(Child.__bases__)
Y2xhc3MgUGFyZW50MShvYmplY3QpOgoJcGFzcwoKY2xhc3MgUGFyZW50MihvYmplY3QpOgoJcGFzcwoKY2xhc3MgQ2hpbGQoUGFyZW50MSk6CglwYXNzCgpwcmludChDaGlsZC5fX2Jhc2VzX18pCnByaW50KCJDaGFuZ2luZyBfX2Jhc2VzX18uLi4iKQpDaGlsZC5fX2Jhc2VzX18gPSAoUGFyZW50MiwpCnByaW50KENoaWxkLl9fYmFzZXNfXyk=