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方法一：父類.__init__(self,...)調用，self不能省略，否則報錯

#coding=utf-8 class family(object):def __init__(self,host):self.host = hostdef printf(self):print('the hoster of the family is %s.'%self.host) class myfamily(family):member = []def __init__(self):family.__init__(self,host = 'xiaoli')#注意self必須有，否則報錯print('hi')def add_member(self,member):self.member.append(member)def print_member(self):print("there are %d member : %s"%(len(self.member),self.member)) m = myfamily() 輸出結果： r@r-Sys:~/python/now/review2$ python3 call_father1.py hi如果不加self,那么會出現如下報錯信息： r@r-Sys:~/python/now/review2$ python3 call_father1.py Traceback (most recent call last):File "call_father1.py", line 17, in <module>m = myfamily()File "call_father1.py", line 10, in __init__family.__init__(host = 'xiaoli') TypeError: __init__() missing 1 required positional argument: 'self'

方法二：在子類初始化方法中，通過super()函數來調用父類（超類）的初始化方法，代碼如下，

#coding=utf-8 class family(object):def __init__(self,host):self.host = hostdef printf(self):print('the hoster of the family is %s.'%self.host) class myfamily(family):member = []def __init__(self):super(myfamily,self).__init__(host = 'xiaoli')#baohanselfprint('hi')def add_member(self,member):self.member.append(member)def print_member(self):print("there are %d member : %s"%(len(self.member),self.member)) m = myfamily()

python3：子類調用父類構造函數的兩種方法：

第一種方法：

class People:def __init__(self, name, age):self.name = nameself.age = ageclass Student(People):def __init__(self, name, age, grade):super().__init__(name, age)self.grade = grade

super().__init__(父類構造函數需要的參數，不包括self)

第二種方法：

父類.__init__(self,父類構造函數需要的參數)

class People:def __init__(self, name, age):self.name = nameself.age = ageclass Student(People):def __init__(self, name, age, grade):People.__init__(self, name, age)self.grade = grade

這種方法需要將self作為參數傳遞。

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總結

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