关于TypeError:xxx() missing 1 required positional argument: ‘S‘问题处理意见

关于TypeError:xxx() missing 1 required positional argument: 'S’问题处理意见

关于调用python模块的方法总结

在调用自己保存的模块.py文件时，导入后就直接进行 文件名.函数进行调用，会直接出现问题Missing 1 required positional argument

class Solution:
    def numJewelsInStones(self, J: str, S: str) -> int:
        i = 0
        for key in J:
            i=S.count(key)+i
        return i
        

>>> from Solution import *
>>> S = Solution.numJewelsInStones(A,B)
Traceback (most recent call last):
  File "<pyshell#16>", line 1, in <module>
    S = Solution.numJewelsInStones(A,B)
TypeError: numJewelsInStones() missing 1 required positional argument: 'S'

正确的做法是

>>> from Solution import *
>>> s = Solution()
>>> m = s.numJewelsInStones(A,B)
>>> m
3

在对类模块进行进行调用时，必须进行实例化，才会调用__init__函数，使用传进的参数进行处理