a = [1, 2, 3]
b = [1, 2, 3]
c = a
print(a == b)
print(a is b)
print(a is c)
class A:
def __init__(self):
print("A init")
class B(A):
def __init__(self):
print("B init")
super().__init__()
class C(A):
def __init__(self):
print("C init")
super().__init__()
class D(B, C):
def __init__(self):
print("D init")
super().__init__()
d = D()
