python输入密码的隐藏及判断语句

import getpass

username = input("username:")
password = input("password:")

if_username == username and _password == password:
    print("welcome {name} login...", .format(name=username))
else:
    print("Invalid username or password！")

使用python的内置模组来隐藏密码

判断年龄的小程序

age_of_girl = 16
guess_age = int(input(girl's age:))

if guess_age == age_of_girl:
    print("you got it !")
elif guess_age >= age_of_girl:
    print("think smaller , you think is bigger. ")
else:
    print("think bigger , you think is smaller ")