不了解子类定义中此 TypeError 的原因 [关闭]答案

【问题标题】：Don't understand cause of this TypeError in subclass definition [closed]不了解子类定义中此 TypeError 的原因 [关闭]
【发布时间】：2021-06-01 15:49:34
【问题描述】：

描述代码和错误如下：

代码-

#Inheritance

class Father:
    def __init__(self,home):
        self.home = home

class Son(Father):
    def __init__(self,wife,bike):
        super(). __init__(self,home)
        self.wife = wife
        self.bike = bike
        
sonworth = Son("fourbhk","nikita","hayabusa")
print(sonworth.home,sonworth.wife,sonworth.bike)

错误 -

TypeError                                 Traceback (most recent call last)
<ipython-input-69-b4fa474bd6de> in <module>
     10         self.bike = bike
     11 
---> 12 sonworth = Son("fourbhk","nikita","hayabusa")
     13 print(sonworth.home,sonworth.wife,sonworth.bike)
     14 

TypeError: __init__() takes 3 positional arguments but 4 were given

【问题讨论】：

标签： python class oop inheritance

【解决方案1】：

我可以看到您错过了来自Son 的home 参数：

class Father:
    def __init__(self, home):
        self.home = home

class Son(Father):
    def __init__(self, home, wife, bike):
        super().__init__(home)
        self.wife = wife
        self.bike = bike
        
sonworth = Son("fourbhk", "nikita", "hayabusa")
print(sonworth.home, sonworth.wife, sonworth.bike)

【讨论】：

【解决方案2】：

您忘记使用来自Son 的home 参数

您也不需要使用Super() 函数，因为Father 不继承任何东西

class Father:
    def __init__(self,home):
        self.home = home

class Son(Father):
    def __init__(self,home,wife,bike):
        Father. __init__(self,home)
        self.wife = wife
        self.bike = bike
        
sonworth = Son("fourbhk","nikita","hayabusa")
print(sonworth.home,sonworth.wife,sonworth.bike)

【讨论】：

谢谢，老师告诉我要使用超级功能。
顺便说一句，在这种情况下，您应该使用super()，以防此类更改为从不同的超类继承。那你就不用改__init__()里的代码了。