基于Python实现用户管理系统

class userLogReg:  """  Created on 2018.11  @author: tox33  """  def __init__(self):    """      :param userFile: 操作的文件    """    self.userFile = "user.txt"   def userLogin(self,username,password):    """      用户登录      :param username:用户名      :param paaword:密码      :return:True，用户登录成功；False，用户登录失败    """    try:      f = open(self.userFile,"r",encoding="utf-8")      for line in f:        line = line.strip()        line_list = line.split("#")        if line_list[0] == username and line_list[1] == password:          return True        elif line_list[0] == username and line_list[1] != password:          print("密码错误！！")      return False    except IOError:      return False   def userRegister(self,username,password):    """      用户注册      1、打开文件      2、用户名#密码      :param username:用户名      :param password:密码      :return:True，注册成功    """    with open(self.userFile,"a",encoding="utf-8")as f:      temp = "/n" + username + "#" + password      f.write(temp)      return True   def user_exist(self,username):    """      检测用户名是否存在      :param username:要检测的用户名      :return: True，用户名存在；False，用户名不存在    """    try:      with open(self.userFile,"r",encoding="utf-8") as f:        for line in f:          line = line.strip()          line_new = line.split("#")          if line_new[0] == username:            return True        return False    except IOError:      return False   def main(self):    """      主控制函数      :操作选择参数arg: 0-注册 1-登录    """    print("欢迎来到Al用户管理系统")    while(True):      arg = input("0：注册 ，1：登录/n")      if arg == "0":        user = input("请设置用户名：")        if self.user_exist(user):          print("用户名已存在，请重新设置！")          continue        else:          pwd = input("请设置密码：")          if self.userRegister(user,pwd):            print("注册成功！")            continue          else:            print("注册失败！")            continue      elif arg == "1":        user = input("请输入用户名：")        if not self.user_exist(user):          print("用户名不存在，请检查！")          continue        else:          pwd = input("请输入登录密码：")          if self.userLogin(user,pwd):            print("登录成功！")            break          else:            print("登录失败，请检查！")            continue      else:        print("输入错误，请检查！")        continue if __name__ == '__main__':  test = userLogReg()  test.main()