Python两个变量是相同的，但python并不认为它们是

Question

我正在制作一个有登录的程序;它根据用户的输入检查输入。但是，它不会接受他们输入了正确的密码，即使它是正确的：

for i in range(5):
    existingUsername = input("What is your user name?")
    if existingUsername in open('logins.txt').read():
        with open("logins.txt", "r") as myFile:
            for num, line in enumerate(myFile, 1):
                if existingUsername in line:
                    passwordLine = num + 1
                    passwordAttempt = input(str("What is your password?"))
                    passwordText = linecache.getline("logins.txt", passwordLine)
                    if passwordAttempt == passwordText:
                        print("That is correct")
                        quizSelection()
                        break
                    else:
                        print("That doesn't seem to match. Please try again")

它引用的文本文件中只有Har16和Google，顶部是Har16的单独行

Answer 1

当您运行passwordText = linecache.getline("logins.txt", passwordLine)时，如果您的文件有多行，则可能会在结尾处返回带有\n的字符串。