Question

我正在努力练习，因为我在学校做了未经审核的评估，而且我的代码仍然存在，但它没有按预期工作，因为它没有无论我写的是什么，都说用户名是正确的：/

 acc = input("Do you have an existing account? y/n ")
if acc == "y":
    accnick= input("Enter your username. ")
    while accnick in open("file.txt").read():
        print("Correct username.")
        accpass= input("Enter your password. ")
        if len(accpass) == 0:
            accpass = input("Try again. ")
        while accpass in open("file.txt").read():
            print("Correct password. ")
            break

    else:
        accnick = input("Wrong username, try again. ")

elif acc == "n":
    name = input("Enter your name. ")
    while len(name) == 0:
        name = input("You haven't entered anything, try again. ")
    age = int(input("Enter your age. "))
    age = str(age)
    while len(age) == 0:
        age = input("Enter your age again. ")
    password = input("Enter your password. ")
    nick = name[:3]
    nickname = nick+str(age)
    file=open("file.txt","w+") #w+ is to write to a file and create a file if it doesnt exist yet
    file.write(name+' '+str(age)+' '+nickname+' '+' '+password)
    file=open("file.txt","r")
    kurwa=file.read()
    print(kurwa)
    name = input("Enter your name. ") ###
    if 'Test Test' in open('file.txt').read():
        print("Someone with that name already exists. ")

Answer 1

在您的代码中，在输入正确的用户名后，它将跳回print("Correct username.")。因此，您将陷入无限循环。您的break应该是while循环的一部分。此外，我将第二个while更改为if。

试试这个：

acc = input("Do you have an existing account? y/n")
if acc == "y":
    accnick= input("Enter your username. ")
    while accnick in open("file.txt").read():
        print("Correct username.")
        accpass= input("Enter your password. ")
        if len(accpass) == 0:
            accpass = input("Try again. ")
        if accpass in open("file.txt").read():
            print("Correct password. ")
        break

Python帐户系统

1 个答案: