Python音乐猜谜游戏答案验证失败问题求助

问题描述 #

我用Python开发了一款音乐猜谜游戏，核心逻辑是从Songs.txt读取歌曲列表，随机选取1首歌曲，提取歌名每个单词的首字母并显示对应歌手，用户拥有两次猜歌名的机会并按规则计分。但无论输入正确歌名（含大小写、首字母大写等形式），程序始终判定答案错误。

原程序代码 #

# MUSIC QUIZ GAME

import random
# Import the 'random' function in order to select a random number and get a random song.
import time
# Importing the ability to 'pause' to give the program a more professional feel.
import sys
# Import the ability to close the program.
import linecache
# Import the ability to get a specific line from a file.

userscore = 0
# The userscore is automatically zero, because they have just started playing.

random_picker = random.randint(1,7)
# Using the random operator, we pick a random number from 1 to 5, because there are 5 songs. We will use this to select the same random line from two files.
# ----- Accessing the Songs database ----- #
     # Open the file.
file = open("Songs.txt", "r")
     # Get the line from file. The line number is determined by the 'random_picker' used earlier.
song = linecache.getline(r"Songs.txt", random_picker).upper()
     # Split the line into individual words.
song_prompt = song.split()

# ----- Accessing the Artists database ----- #
file = open("Artists.txt", "r")
artist = linecache.getline(r"Artists.txt", random_picker)

# -----Giving the user the prompt ----- #
print("Your prompt is: ")

# Get only the first letter of each word in the prompt, then output them.
for word in song_prompt:
    print(word[0])
print("by " + artist)

guess1 = input("Enter your song name guess:\n")

if guess1 == song:
     print("Well done!")
     userscore = userscore + 3
     print("Your score is " + str(userscore) + ".")
  
elif guess1 != song:
     print("Wrong guess.")
     guess2 = input("What is your second guess for the song name?\n")
     
     if guess2 == song:
          print("Well done.")
          userscore = userscore + 1
          print("Your score is " + str(userscore) + ".")
     else:
          print("You have gotten both guesses wrong.")
          sys.exit()

文件内容 #

Songs.txt：

Let It Happen
New Gold
Shotgun
Metamodernity
Bad Guy
Blank Space
Bohemian Rhapsody

Artists.txt：

Tame Impala
Gorillaz
George Ezra
Vansire
Billie Eillish
Taylor Swift
Queen

错误运行示例 #

Your prompt is: 
N
G
by Gorillaz

Enter your song name guess:
New Gold
Wrong guess.
What is your second guess for the song name?
NEW GOLD
You have gotten both guesses wrong.

问题原因 #

1. 换行符残留：linecache.getline()读取的每行内容末尾会包含换行符\n，比如读取到的song实际值是"NEW GOLD\n"，而用户输入的内容不包含这个换行符，直接比对必然不相等。
2. 大小写不兼容：原代码仅将读取的歌名转为大写，但用户输入可能是混合大小写（如New Gold），直接比对会因大小写差异判定错误。

修复方案 #

• 对读取的歌曲名使用.strip()去除首尾空白字符（包括换行符），再转为大写。
• 将用户的输入也转为大写后再进行比对，忽略大小写差异。

修复后的完整代码 #

# MUSIC QUIZ GAME

import random
import sys
import linecache

userscore = 0

random_picker = random.randint(1,7)

# ----- Accessing the Songs database ----- #
# 读取歌曲名并去除首尾空白，转大写
song = linecache.getline(r"Songs.txt", random_picker).strip().upper()
song_prompt = song.split()

# ----- Accessing the Artists database ----- #
# 读取歌手名并去除首尾空白，避免多余换行
artist = linecache.getline(r"Artists.txt", random_picker).strip()

# -----Giving the user the prompt ----- #
print("Your prompt is: ")
for word in song_prompt:
    print(word[0])
print(f"by {artist}")

guess1 = input("Enter your song name guess:\n").strip().upper()

if guess1 == song:
     print("Well done!")
     userscore += 3
     print(f"Your score is {userscore}.")
  
else:
     print("Wrong guess.")
     guess2 = input("What is your second guess for the song name?\n").strip().upper()
     
     if guess2 == song:
          print("Well done.")
          userscore += 1
          print(f"Your score is {userscore}.")
     else:
          print("You have gotten both guesses wrong.")
          sys.exit()

内容的提问来源于stack exchange，提问作者Boxo Games