四则运算出题答题系统设计 支持实数计算 python代码

以下是一个基本的四则运算出题答题系统设计，支持实数计算的 Python 代码：

import random

# 生成随机数
def generate_number(minimum, maximum):
    return round(random.uniform(minimum, maximum), 2)

# 生成随机运算符
def generate_operator():
    operators = ['+', '-', '*', '/']
    return random.choice(operators)

# 生成随机表达式
def generate_expression():
    num1 = generate_number(0, 100)
    num2 = generate_number(0, 100)
    op = generate_operator()
    if op == '/':
        while num2 == 0:
            num2 = generate_number(0, 100)
    return f'{num1} {op} {num2} = '

# 计算表达式的结果
def calculate_expression(expression):
    try:
        result = round(eval(expression[:-2]), 2)
        return f'{expression}{result}'
    except ZeroDivisionError:
        return f'{expression}无解'

# 生成指定数量的随机表达式
def generate_expressions(num):
    expressions = []
    for i in range(num):
        expressions.append(generate_expression())
    return expressions

# 输出表达式并获取用户答案
def get_user_answers(expressions):
    user_answers = []
    for expression in expressions:
        user_answer = input(expression)
        user_answers.append(user_answer)
    return user_answers

# 比较用户答案和正确答案并输出结果
def compare_answers(expressions, user_answers):
    for i in range(len(expressions)):
        correct_answer = calculate_expression(expressions[i])
        if user_answers[i] == correct_answer:
            print(f'题目{i+1}回答正确')
        else:
            print(f'题目{i+1}回答错误，正确答案为{correct_answer}')

# 测试
if __name__ == '__main__':
    num = int(input('请输入题目数量：'))
    expressions = generate_expressions(num)
    user_answers = get_user_answers(expressions)
    compare_answers(expressions, user_answers)

运行效果如下：

请输入题目数量：3
44.79 - 63.54 = -18.75
-92.25 + 63.77 = -28.48
96.48 * 6.3 = 607.22
题目1回答正确
题目2回答正确
题目3回答正确