自定义类的定义和不同的方法

huangapple
go评论96阅读模式
英文:

Definition of custom class and different methods

问题

我有以下定义：

  1. def fun1(x):
  2.     return x + 2
  4. class my_class:
  5.     def fun1(x):
  6.         return x + 22
  7.     def fun2(x):
  8.         return fun1(x) + 33
  10. print(my_class.fun2(10))

然而，这返回的是45，而我期望的是65（10 + 22 + 33）。

我在哪里犯了错误？

英文:

I have below definition:

  1. def fun1(x) :
  2. 	return x + 2
  4. class my_class :
  5. 	def fun1(x) :
  6. 		return x + 22
  7. 	def fun2(x) :
  8. 		return fun1(x) + 33
  10. print(my_class.fun2(10))

However this returns 45, whereas I am expecting 65 (10 + 22 + 33).

Where am I making a mistake?

答案1

得分: 0

This can be a way out but, not a recommended style:

  1. class my_class:
  2.     def fun1(x):
  3.         return x + 22
  4.     def fun2(x):
  5.         return my_class.fun1(x) + 33
  6. my_class.fun2(10)

Another unorthodox way:

  1. class my_class:
  2.     def fun1(x):
  3.         return x + 22
  4.     @classmethod
  5.     def fun2(cls, x):
  6.         return cls.fun1(x) + 33
  7. my_class.fun2(10)

The best way I can think of:

  1. def fun1(x):
  2.     return x + 2
  4. class my_class:
  5.     def fun1(self, x):
  6.         return x + 22
  7.     def fun2(self, x):
  8.         return self.fun1(x) + 33 # referring to instance method self.fun1
  10. print(my_class().fun2(10)) # my_class() is an object
英文:

This can be a way out but, not a recommended style:

  1. class my_class:
  2.     def fun1(x) :
  3.         return x + 22
  4.     def fun2(x) :
  5.         return my_class.fun1(x) + 33
  6. my_class.fun2(10)

Another unorthodox way:

  1. class my_class:
  2.     def fun1(x) :
  3.         return x + 22
  4.     @classmethod
  5.     def fun2(cls,x) :
  6.         return cls.fun1(x) + 33
  7. my_class.fun2(10)

The best way I can think of:

  1. def fun1(x) :
  2.     return x + 2
  4. class my_class :
  5.     def fun1(self,x) : 
  6.         return x + 22
  7.     def fun2(self,x) :
  8.         return self.fun1(x) + 33 #refering to instance method self.fun1
  10. print(my_class().fun2(10)) # my_class() is a object

huangapple
  • 本文由 发表于 2023年4月10日 19:19:37
  • 转载请务必保留本文链接：https://go.coder-hub.com/75976617.html
  • python
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