Python习题 184：乘法计算练习程序

import random


def generate_question():
    num1 = random.randint(1, 9)  # 注：这是闭区间
    num2 = random.randint(1, 9)  # [a, b]
    question = f'{num1} x {num2} ='
    answer = num1 * num2
    return question, answer


def quiz():
    correct_answers = 0  # 正确答案计数器
    total_questions = 20  # 总题量

    for _ in range(total_questions):
        question, correct_answer = generate_question()
        try:
            user_answer = int(input(question + ' '))
            if user_answer == correct_answer:
                print('正确！')
                correct_answers += 1
            else:
                print(f'错误，正确答案是 {correct_answer}')
        except ValueError:
            print(f'错误，正确答案是 {correct_answer}')

    accuracy = (correct_answers / total_questions) * 100
    print(f'\n答题结束！你的正确率是 {accuracy:.2f}%')


if __name__ == '__main__':
    print('欢迎参加乘法计算练习！（输入数字后回车）')
    quiz()

python test.py
'''
欢迎参加乘法计算练习！（输入数字后回车）
8 x 4 = 34
错误，正确答案是 32
1 x 6 = 6
正确！
...
8 x 7 = 56
正确！

答题结束！你的正确率是 66.67%
'''