如何访问混合嵌套列表和字典中的键值对？

Question

请有人告诉我如何访问此类键值对。我想访问“类别”，“问题”，“正确答案”，“错误答案”。我可以删除“响应代码”和“结果”，并且只使用列表中的嵌套字典，但我想尝试不操作数据。我知道将使用 for 循环。

question_data = {"response_code": 0,
                 "results": [
                     {"type": "multiple",
                      "difficulty": "medium",
                      "category": "Entertainment: Film",
                      "question": "Sign of death.",
                      "correct_answer": "Red Shirt",
                      "incorrect_answers": ["Minions", "Expendables", "Cannon Fodder"]
                      }
                      ]
                        

Answer 1

在示例中尝试一下：

代码：

import random
import string

QUESTIONS = {
    "What is the name of PEP 572?": [
        "Assignment Expressions",
        "Named Expressions",
        "The Walrus Operator",
        "The Colon Equals Operator",
    ],
    "Which one of these is an invalid use of the walrus operator?": [
        "[y**2 for x in range(10) if y := f(x) > 0]",
        "print(y := f(x))",
        "(y := f(x))",
        "any((y := f(x)) for x in range(10))",
    ],
}

num_correct = 0
for question, answers in QUESTIONS.items(0):
    correct = answers[0]
    random.shuffle(answers)

    coded_answers = dict(zip(string.ascii_lowercase, answers))
    valid_answers = sorted(coded_answers.keys())

    for code, answer in coded_answers.items():
        print(f"  {code}) {answer}")

    while (user_answer := input(f"\n{question} ")) not in valid_answers:
        print(f"Please answer one of {', '.join(valid_answers)}")

    if coded_answers[user_answer] == correct:
        print(f"Correct, the answer is {user_answer!r}\n")
        num_correct += 1
    else:
        print(f"No, the answer is {correct!r}\n")

print(f"You got {num_correct} correct out of {len(QUESTIONS)} questions")