Change your code to this and I think it’ll explain things (presumably super
is looking at where, say, B
is in the __mro__
?):
class A(object):
def __init__(self):
print "A init"
print self.__class__.__mro__
class B(A):
def __init__(self):
print "B init"
print self.__class__.__mro__
super(B, self).__init__()
class C(A):
def __init__(self):
print "C init"
print self.__class__.__mro__
super(C, self).__init__()
class D(B, C):
def __init__(self):
print "D init"
print self.__class__.__mro__
super(D, self).__init__()
x = D()
If you run it you’ll see:
D init
(<class '__main__.D'>, <class '__main__.B'>, <class '__main__.C'>, <class '__main__.A'>, <type 'object'>)
B init
(<class '__main__.D'>, <class '__main__.B'>, <class '__main__.C'>, <class '__main__.A'>, <type 'object'>)
C init
(<class '__main__.D'>, <class '__main__.B'>, <class '__main__.C'>, <class '__main__.A'>, <type 'object'>)
A init
(<class '__main__.D'>, <class '__main__.B'>, <class '__main__.C'>, <class '__main__.A'>, <type 'object'>)
Also it’s worth checking out Python’s Super is nifty, but you can’t use it.