一个简单的加减法游戏

一个合格的脚本，至少含有如下部分：

1，文件名注释

2，doc字段

3，主函数

4，异常处理

5，main()

这个脚本要实现的功能：

练习1-10内数字的加减法

代码段：

#!/usr/bin/env python3
#-*- coding:utf-8 -*-
#filename = “算数游戏.py”

'''1到10之间的加减法计算'''

from operator import add, sub
from random import randint,choice

ops ={
    '+':add,
    '-':sub
}

MAXTRIES = 2

def doprob():
    op = choice('+-')
    nums = [randint(1,10) for i in range(2)]
    nums.reverse()
    ans=ops[op](*nums)
    print("%d %s %d " %(nums[0],op,nums[1]))
    Tries = 0

    while True:
            try:
                your_answer = int((input("Enter your answer
 >#")))
                if your_answer == ans:
                    print("Correct")
                    break
                if Tries == MAXTRIES:
                    print("answer is %d" %(ans))
                    break
                else:
                    print("incorrect, Please Try again:")
                    Tries += 1
            except (TypeError,EOFError,ValueError,KeyboardInterrupt):
                print("Invalid input")


def main():
    while True:
        doprob()
        try:
            opt = input("Again?[Y/N) # ").lower()
            if opt == 'n':
                break
        except (KeyboardInterrupt,EOFError):
            break

if __name__ == '__main__':
    main()

使用到的模块：

random

operator