python编程—随机加减乘除运算计算

代码如下：

import random
count = 0
right = 0
while True:
    a = random.randint(0, 9)
    # 作为除数
    b = random.randint(1, 9)
    op = ['+', '-', '*', '//']
    d = random.choice(op)
    print('%d %s %d = ' % (a, d, b))
    question = input('请输入您的答案： （q退出）')
    result1 = a + b
    result2 = a - b
    result3 = a * b
    result4 = a // b
    if question == str(result1):
        print('回答正确')
        right += 1
        count += 1
    elif question == str(result2):
        print('回答正确')
        right += 1
        count += 1
    elif question == str(result3):
        print('回答正确')
        right += 1
        count += 1
    elif question == str(result4):
        print('回答正确')
        right += 1
        count += 1
    elif question == 'q':
        break
    else:
        print('回答错误')
        count += 1

percent = right / count
print('测试结束,共回答%d道题,正确个数为%d,正确率为%.2f%%'
          % (count, right, percent * 100))