Python多繼承

參考了這篇博客打了一遍：Python - 對多繼承以及super的一些瞭解

class D(object):
    def foo(self):
        print "class D"

class B(D):
    pass

class C(D):
    def foo(self):
        print "class C"

class A(B, C):
    pass

f = A()
f.foo()

====
output: class C

如果把 class D(object) 改成 class D:

class D:
    def foo(self):
        print "class D"

class B(D):
    pass

class C(D):
    def foo(self):
        print "class C"

class A(B, C):
    pass

f = A()
f.foo()
=====
output: class D

補充了下多繼承的情況：

class B:
    def foo(self):
        print "class b"

class C:
    def foo(self):
        print "class C"

class A(B, C):
    pass

f = A()
f.foo()
=============
output: class b

===========================

class A(object):
    def __init__(self,a):
        print a
        
class B(object):
    def __init__(self,a,b):
        print a+b
        
class C(A,B):
    def __init__(self):
         super(C,self).__init__(?)

obj = C()

　　① ? = 1　　　　　　-->  輸出1

　　② ? = 1,2　　　　   --> TypeError: __init__() takes exactly 2 arguments (3 given)

　　定義C的時候改成class(B,A)

　　③ ? = 1　　　　　　--> TypeError: __init__() takes exactly 3 arguments (2 given)

　　④ ? =1,2　　　　    --> 輸出3

class A(object):
    def func(self):
        print 1
         
class B(object):
    def __init__(self):
        print 2
        
class C(A,B):
    def __init__(self):
         super(C,self).__init__()

obj = C()   
#The output is 2