Python模拟用户登录

# coding=utf8

import hashlib

db = {
    'michael':'e10adc3949ba59abbe56e057f20f883e',
    'bob':'878ef96e86145580c38c87f0410ad153',
    'alice':'99b1c2188db85afee403b1536010c2c9'
}

def calc_md5(password):
    md5 = hashlib.md5()
    md5.update(password.encode('utf-8'))
    return md5.hexdigest()

def login(user, password):
    entry_pwd = calc_md5(password)
    try:
        db_pwd = db.get(user)

        if db_pwd == entry_pwd:
            print(user + '登录成功')
        else:
            print(user + '密码输入错误')
    except:
        print('用户名' + user + '输入错误！')

login(')
login('bob', 'abc999')
login('alice', 'alice2008')
login('tom', 'tom123')
login('mike', 'abcdefg')
login('bob', 'abc9999')