python基础：输密码

#输入密码不显示（隐藏）
import getpass

username = input("username:")

password = getpass.getpass("password:")


print(username,password)

#判断用户名和密码是否输入正确

_username = 'alex'

_password = '123456'

username = input("username:")

password =input("password:")


if _username == username and _password == password:

    print("Welcome user {name} login...".format(name=username) )

else:

    print("Invalid username or password!")