Python之登陆接口设计

刚刚开始学习Python，第一个编写的程序。

import os

user_file = open('use_file.txt', 'r')
user_list = user_file.readlines()
user_file.close()
while True:
    lock_file = open('lock_file.txt', 'r+')
    lock_list = lock_file.readlines()
    lock_file.close()

    login_Success = False
    user_name = input(('user:').strip())
    for line1 in lock_list:
        line1 = line1.split()
        if user_name == line1[0]:
            print("Sorry, you are already in the block list, get the fucking out!")
            exit()
    for line2 in user_list:
        line2 = line2.split()
        if user_name == line2[0]:
            for i in range(3):
                password = input(('Password:').strip())
                if password == line2[1]:
                    print("Welcome %s login my system!" % user_name)
                    login_Success = True
                    break
            else:
                f = open('lock_file.txt', 'a')
                f.write('%s\n' % user_name)
                f.close()
                print("Entered 3 times of wrong passwd, going to lock %s" % user_name)
            if login_Success == True:
                break
    if login_Success == True:
        break