怎么找不到<Python核心编程>的习题答案def ji(x1, x2): '''5-2 返回两个数的乘积''' return x1*x2 def grade(score): '''5-3 输入2023-02-25Python240
怎么找不到<Python核心编程>的习题答案def ji(x1, x2): '''5-2 返回两个数的乘积''' return x1*x2 def grade(score): '''5-3 输入2023-02-24Python220