解决问答游戏题库重复抽取问题：移除已选字典元素的方法

问题说明 #

我开发了一个小型问答游戏，通过代码生成两个文本文件分别存储问题字典和答案字典，后续从文件读取字典随机抽取10道题，记录玩家答案并计分，但目前存在同一问题被多次抽取的情况，需要实现抽取后移除问题字典中对应项的方法。

原游戏运行代码 #

import ast
import random

with open("question.txt", "r") as questions:
    qdic = ast.literal_eval(questions.read())

with open("answers.txt", "r") as answers:
    adic = ast.literal_eval(answers.read())


print("Welcome to my quiz!")

answer = input("Are you ready to play the quiz? (yes/no) :")
name = input(f"\nWhat's your name? ")
points = 0
total_questions = 10

while total_questions <= 10:
    if answer.lower() == "yes":
        question = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
        for i in range(len(question)):
            answers = input(f"Question " + str(question[i]) + ": " + random.choice(list(qdic.values())))
            givenAnswer = answers
            if givenAnswer.lower() in adic.values():
                points += 1
                print("Correct!")

            else:
                print("Wrong answer =(")
            i += 1


    total_questions += 1

问题与答案字典生成代码 #

import json

questions = {"1": "What year did man land on the moon?",
             "2": "Which Indonesian island shares a name with a programming language? ",
             "3": "What is the formula for water? ",
             "4": "The UV in UV rays stand for what? ",
             "5": "Which currency was used in italy prior to the Euro? ",
             "6": "Where was the croissant invented? ",
             "7": "Which movie won the first Oscar for best picture? ",
             "8": "What musical piece was Mozart's last? ",
             "9": "What country was Stalin born? ",
             "10": "Who separated the red sea in the old testament? "}


with open("question.txt", "w") as question_file:
    question_file.write(json.dumps(questions))

answers = {"1": "1969",
           "2": "java",
           "3": "h20",
           "4": "ultraviolet",
           "5": "lira",
           "6": "austria",
           "7": "wings",
           "8": "requiem",
           "9": "georgia",
           "10": "moses"
           }

with open("answers.txt", "w") as answers_file:
    answers_file.write(json.dumps(answers))

解决方案 #

核心是抽取问题后同步删除问题字典和答案字典中的对应键值对，同时修正原代码的逻辑问题，具体实现如下：

修改后的游戏运行代码 #

import json
import random

# 读取文件，用json.load更规范安全
with open("question.txt", "r") as questions:
    qdic = json.load(questions)

with open("answers.txt", "r") as answers:
    adic = json.load(answers)

print("Welcome to my quiz!")
play_ready = input("Are you ready to play the quiz? (yes/no) :").lower()
if play_ready != "yes":
    print("Maybe next time!")
    exit()

name = input("\nWhat's your name? ")
points = 0
total_questions = 10

# 循环抽取10道题，每次抽取后删除对应键
for q_num in range(1, total_questions + 1):
    if not qdic:  # 防止题目不足的情况
        print("No more questions left!")
        break
    # 随机选择一个问题的键
    selected_key = random.choice(list(qdic.keys()))
    # 获取对应的问题和正确答案
    current_question = qdic[selected_key]
    correct_answer = adic[selected_key].lower()
    # 展示问题并获取玩家答案
    player_answer = input(f"Question {q_num}: {current_question} ").lower()
    # 判断答案正误
    if player_answer == correct_answer:
        points += 1
        print("Correct!")
    else:
        print(f"Wrong answer =( The correct answer is: {adic[selected_key]}")
    # 从两个字典中删除已抽取的键，避免重复
    del qdic[selected_key]
    del adic[selected_key]

# 展示最终得分
print(f"\nThanks for playing, {name}! Your final score is {points}/{total_questions}")

关键修改点 #

• 用json.load()替代ast.literal_eval()读取文件，更适配之前用json.dumps()写入的格式，安全性更高。
• 随机抽取字典的键而非值，这样能同时关联问题和对应的正确答案，解决原代码中判断答案不准确的问题。
• 每次抽取后用del语句删除两个字典中对应的键，确保该问题不会被再次抽取。
• 优化循环逻辑，直接循环10次，同时增加题目不足时的判断。
• 修正答案判断逻辑，直接对比玩家答案和对应问题的正确答案，而非检查是否在所有答案中（原逻辑会导致玩家输入其他题的正确答案也得分）。

内容的提问来源于stack exchange，提问作者Nozdub