列表对象没有属性拆分

Question

基本上标题说：我试图创建一个程序，检测文件中的用户名和密码。但是，每当我运行它，它想出了这个错误：

Traceback (most recent call last): 
    File "C:/Users/tom11/Desktop/Data Login.py", line 33, in <module> 
    content = raw.split(",") 
AttributeError: 'list' object has no attribute 'split' 

下面是代码的地方是哪里错了：

UCheck = "" 
PCheck = "" 
Username = input("Username: ") 
Attempts = 3 
while UCheck != "Y": 
    lines = True 
    f = open('Data.txt', 'r+') 
    while lines: 
     raw = f.readlines() 
     content = raw.split(",") 
     if len(raw) == 0: 
      print("That Username does not exist!") 
      Username = input("Username: ") 
     elif Username == content[0]: 
      UCheck == "Y" 
      lines = False 

这是什么.txt文件内：

TheCloudMiner,Password123 
TestUser,TestPass 
Testing,Tester 
Username,Password 

我已阅读了其他一些答案，但他们对我没有帮助。任何帮助将非常感激。

Answer 1

readlines()返回字符串列表，而不是字符串。你想单独申请每行split()，所以你应该遍历它的东西，如

for line in open(...).readlines(): 
    username, password = line.split(",") 
    # rest of your code