Python2.7-登录尝试

下面是简单的登录脚本

我有小虫子

在文本文件中写入：

name :test    
password :123321    
admin :0

我想做：

if password and username exist then 
    #do code
else
    #do code

---

您的问题是缩进-您希望将Log=中的所有内容缩进到while循环中

import os
import sys

print "Hello to login - login(username,password)"
login = 0
att = 1
while login == 0:

#Check if user login/exist

    Log = raw_input("Enter username: ")
    if os.path.isfile(Log + ".txt"):
        userfile = (Log+".txt")
        f = open(userfile,"r")
        Pass = raw_input("enter password: ")
        Lines = f.readlines()
        Password1 = Lines[1].split(":")
        Passwordl = Lines[1].strip()
        if Passwordl[10:] == Pass:
            login = 1
            break
    elif att == 3:
        print "you try to log in more then 3 time, user locked"
        break
    else:
        print "username not exist or pass wrong"
        att += 1

---

告诉我们问题是，else只是在第一个if中被执行，也就是说，如果密码错误，它将返回到loop。你应该使用计数器或其他东西，还应该使用while循环。不是if-else循环

import os
import sys

print "Hello to login - login(username,password)"
login = 0
att = 1
while login == 0:

#Check if user login/exist

    Log = raw_input("Enter username: ")
    if os.path.isfile(Log + ".txt"):
        userfile = (Log+".txt")
        f = open(userfile,"r")
        Pass = raw_input("enter password: ")
        Lines = f.readlines()
        Password1 = Lines[1].split(":")
        Passwordl = Lines[1].strip()
        if Passwordl[10:] == Pass:
            login = 1
            break
    elif att == 3:
        print "you try to log in more then 3 time, user locked"
        break
    else:
        print "username not exist or pass wrong"
        att += 1