四则运算题库python代码

以下是一个简单的四则运算题库 Python 代码，可以随机生成指定数量的四则运算题目：

import random

OPERATORS = ["+", "-", "*", "/"]


def generate_question():
    operator = random.choice(OPERATORS)
    if operator == "/":
        a = random.randint(1, 100)
        b = random.randint(1, 10)
        a = a * b
    else:
        a = random.randint(1, 100)
        b = random.randint(1, 100)
    question = f"{a} {operator} {b}"
    answer = eval(question)
    return question, answer


if __name__ == "__main__":
    num_questions = int(input("请输入题目数量："))
    questions = []
    for i in range(num_questions):
        question, answer = generate_question()
        questions.append((question, answer))
    print("题目：")
    for i, (question, answer) in enumerate(questions):
        print(f"{i+1}. {question} = ")
    print("答案：")
    for i, (question, answer) in enumerate(questions):
        print(f"{i+1}. {answer}")

使用方法：

1. 运行代码后，会提示你输入题目数量。
2. 然后程序会生成指定数量的四则运算题目和答案，并输出到屏幕上。

注意：此代码中没有做除法运算的除数不能为0的检查，可以根据需要进行添加。