Python中“AttributeError: '_io.TextIOWrapper'对象没有'replace'属性”是什么意思？

Question

print (
"""    Welcome to the code breaker game!
       In this game you will have to change symbols into letters in order to decipher secret words. 
       0 - instructions
       1 - start
       2 - clues
       3 - check your answers
       4 - quit
""")

choice = input(" choice : ")

if choice == ("0"):
    text_file = open ("instructions.txt","r")
    print (text_file.read())
    text_file.close()

elif choice =="1":
    text_file = open ("words.txt","r")
    contents = text_file
    print (text_file.read())
    text_file.close()
    a = input("Please enter a symbol ")
    b = input("Please enter a letter ")

    newcontents = contents.replace(a,b)
    contents = newcontents
    print(contents,"\n")
    text_file.close


elif choice == "2":
 text_file = open ("clues.txt","r")
 print (text_file.read())
 text_file.close()

elif choice == "3":
 text_file = open ("solved.txt","r")
 print (text_file.read())
 text_file.close()

elif choice == "4":
 quit 

基本上，我在做一个计算机科学项目，我的任务是制作一个解码游戏，通过把符号替换成字母来实现。但是当我尝试编写将符号转换成字母的代码时，出现了错误。

另外，有没有办法让这个循环（不使用while循环，因为它们比较复杂）？我希望代码在运行时能显示A和B，然后我选择一个选项后，能够再选择一个不同的选项。（比如我按0查看说明，然后可以选择其他选项，比如开始游戏）。

Answer 1

你代码的这一部分：

text_file = open ("words.txt","r")
contents = text_file
print (text_file.read())
text_file.close()

是没有意义的。你把文件对象（而不是文件的内容）赋值给了 contents。然后你用 print 打印了内容，但并没有把它们赋值给任何东西。我觉得你想要的是：

with open("words.txt") as text_file:
    contents = text_file.read()
print(contents)