python 輸入用戶名和密碼隱藏顯示及判斷

本人用python3.6寫的，2.幾的版本可能會運行出錯
輸入密碼隱藏顯示及判斷
import getpass     #調用getpass
username =input('uarname:')

password =getpass.getpass('password:')

print(username,password) #getpass在pycharm中不好用，在命令提示符運行此代碼，例如: python 文件所在路徑

_username='hehe'
_password ='abc123'

username =input('uarname:')
password =input('password:')

if _username ==username and _password ==password :
    print('Welcome user {name} login...' .format(name=username))

else:
    print('Invalid uername or password!')