条件判断语句if的使用练习

user = '努力'
passwd = '再努力'
username = input('输入用户名：')
password = input('输入密码：')
if username == user:
    pass
    if password == passwd:
        print('登录成功')
    else:
        print('用户名或密码错误')
else:
    print('用户名或密码错误')

优化代码

user = '努力'
passwd = '再努力'
username = input('输入用户名：')
password = input('输入密码：')
if username == user and password == passwd:
    print('登录成功')
else:
    print('用户名或密码错误')