Common simple python module (hashlib) to achieve learning Login Register

#扩展练习：实现登录注册  用hashlib中的md5进行加密

import hashlib
import re

def denglu():
    user1 = input('请输入你的账号:')
    pwd  = input('请输入你的密码:')
    count = 0
    with open('json1.txt','r') as f:
        for i in f:
            user,passwd = i.split('|')   
            result_pwd = re.findall(r'\S+',passwd)[0]   
            
            pwd_a = '加密加密' + pwd + '#￥@￥@#@@#'
            res = hashlib.md5(pwd_a.encode())
            res_pwd = res.hexdigest()
            
            if user1 ==user and res_pwd == result_pwd:
                print('输入正确')
                count +=1

        if count ==0:
            print('输入错误')

def zhuce():
    usr = input('请输入你要注册的名字:')
    pwd = input('请输入你要注册的密码:')
    pwd_n = '加密加密' + pwd + '#￥@￥@#@@#'
    res_pwd = hashlib.md5(pwd_n.encode())
    pwd = res_pwd.hexdigest()
    with open('json1.txt','a+') as f:
        f.write(usr+'|'+pwd + '\n')

while True:
    try:
        a = int(input('请输入你要执行的操作：1.注册，2登录,3.退出\n:'))
    except ValueError as f:
        print('问题是：%s'%f)
        break
    if a == 1:
        zhuce()
    elif a == 2:
        denglu()
    elif a == 3:
        break