开始:
class A(object):
def __init__(self):
print("ctor A beg")
print("ctor A end")
class B(A):
def __init__(self):
print("ctor B beg")
super(B, self).__init__()
print("ctor B end")
b = B()
# 输出信息如下所示:
# ctor B beg
# ctor A beg
# ctor A end
# ctor B end
完。