选择题题库系统

好的，下面是一个简单的选择题题库系统示例，你可以在 Python 中运行它：

class Question:
    def __init__(self, text, choices, answer):
        self.text = text
        self.choices = choices
        self.answer = answer

    def check_answer(self, answer):
        return self.answer == answer


class Quiz:
    def __init__(self, questions):
        self.questions = questions
        self.score = 0
        self.question_index = 0

    def get_question(self):
        return self.questions[self.question_index]

    def display_question(self):
        question = self.get_question()
        print(f"Question {self.question_index + 1}: {question.text}")
        for i, choice in enumerate(question.choices):
            print(f"{i + 1}: {choice}")
        answer = input("Enter your choice (1-4): ")
        self.check_answer(answer)
        self.question_index += 1

    def check_answer(self, answer):
        question = self.get_question()
        if question.check_answer(int(answer)):
            self.score += 1
            print("Correct!")
        else:
            print("Incorrect!")

    def display_score(self):
        print(f"Your score is {self.score}/{len(self.questions)}")


question_bank = [
    Question("What is the capital of France?", ["Paris", "London", "Berlin", "Madrid"], 1),
    Question("What is the largest country in the world?", ["Russia", "USA", "China", "India"], 1),
    Question("What is the highest mountain in the world?", ["Mount Everest", "Mount Kilimanjaro", "Mount Fuji", "Mount McKinley"], 1),
]

quiz = Quiz(question_bank)

while quiz.question_index < len(quiz.questions):
    quiz.display_question()

quiz.display_score()

该程序定义了 `Question` 和 `Quiz` 两个类，其中 `Question` 表示每个选择题，包含题目文本、选项和正确答案；`Quiz` 表示整个题库，包含多个题目和用户的得分。在程序中，我们创建了一个包含多个 `Question` 对象的 `question_bank` 列表，并将其传递给 `Quiz` 对象。`Quiz` 对象中的 `display_question()` 方法会显示当前问题的文本和选项，并要求用户输入答案，然后调用 `check_answer()` 方法来检查答案是否正确。在程序的主循环中，我们一直调用 `display_question()` 直到所有问题都回答完毕，最后调用 `display_score()` 方法显示用户的得分。注意，这个程序只是一个简单示例，如果你需要更完整的选择题题库系统，你需要考虑更多的边界条件和错误处理。