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tuburfransth

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[ÇóÖú] Python¶àÖØ¼Ì³ÐÔõô³õʼ»¯£¿

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class A(object):
        def __init__(self, a):
                print('__init__ A', str(a))
                self.A = a
               
class B(A):
        def __init__(self, a, b):
                super(B, self).__init__(a)
                print('__init__ B', str(b))
                self.B = b

class C(A):
        def __init__(self, a, c):
                super(C, self).__init__(a)
                print('__init__ C', str(c))
                self.C = c
               
class D(B, C):
        def __init__(self, a, b, c, d):
                B.__init__(self, a, b)                    # ÕâÐм°ÏÂÐдúÂëÓÐÎÊÌâ£¬Ã²ËÆ¶Ô»ùÀàA½øÐÐÁËÁ½´Î³õʼ»¯
                C.__init__(self, a, c)
                print('__init__ D', str(d))
                self.D = d
               
shanghe = D('x', 'y', 'z', 'k')
-------------------------------------------------------------------------------------------------------------------
Traceback (most recent call last):
  File "test.py", line 25, in <module>
    shanghe = D('x', 'y', 'z', 'k')
  File "test.py", line 20, in __init__
    B.__init__(self, a, b)
  File "test.py", line 8, in __init__
    super(B, self).__init__(a)
TypeError: __init__() missing 1 required positional argument: 'c'
-----------------------------------------------------------------------------------------------------------
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tuburfransth

½ð³æ (ÕýʽдÊÖ)

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class A(object):
        def __init__(self, a):
                print('__init__ A', str(a))
                self.A = a
               
class B(A):
        def __init__(self, a, b):
                B.__init__(self, a)        # Ð޸Ĵ˴¦£¬²»ÖªµÀΪʲôsuper(B, self).__init__(a)»áÓÐÎÊÌâ
                print('__init__ B', str(b))
                self.B = b

class C(A):
        def __init__(self, a, c):
                C.__init__(self, a)        # Ð޸Ĵ˴¦£¬ ²»ÖªµÀΪʲôsuper(C, self).__init__(a)»áÓÐÎÊÌâ
                print('__init__ C', str(c))
                self.C = c
               
class D(B, C):
        def __init__(self, a, b, c, d):
                B.__init__(self, a, b)                    # ÕâÐм°ÏÂÐдúÂëÓÐÎÊÌâ£¬Ã²ËÆ¶Ô»ùÀàA½øÐÐÁËÁ½´Î³õʼ»¯
                C.__init__(self, a, c)
                print('__init__ D', str(d))
                self.D = d
               
shanghe = D('x', 'y', 'z', 'k')
2Â¥2016-12-13 18:27:59
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

ygidtu

гæ (ÕýʽдÊÖ)

Á½´ÎAµÄ³õʼ»¯ºÜÕý³£°É£¬ÄãBÊǼ̳ÐAµÄ£¬CÒ²ÊǼ̳ÐAµÄ£¬È»ºóDÀïͬʱÓÐBC£¬²»¾ÍÊǰüº¬ÁËÁ½¸öA£¿ËùÒÔAÓеÄÄǸöº¯Êý¿Ï¶¨±»BCÍæ»µÁË£¬¶àÖØ¼Ì³ÐÎÒ´ÓÀ´Ã»¿¼Âǹýͬʱ¼Ì³Ðͬһ¸ö¸¸ÀàÑÜÉú³öÀ´µÄÁ½¸ö×ÓÀ࣬ËùÒÔ»¹Õæ²»ÖªµÀÔõô½â¾ö

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3Â¥2016-12-14 09:31:20
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

baichi121234

½û³æ (Ö°Òµ×÷¼Ò)

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