python - 将一个字符串转换成一个整数，要求不能使用字符串转换整数的库函数。 数值为0或者字符串不是一个合法的数值则返回0

原創 菜鸟小馒头 2020-06-16 04:53

注意：

str.isdigit()

str.isalpha()

ord(str) 是字母转数字

chr(12) 是数字转字母

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