Python 之getpass模塊

Python 之getpass模塊

getpass.getpass([prompt[, stream]]):

prompt:為用戶輸入的提示字符串，默認為：Password:

>>> pwd = getpass.getpass()

Password:

>>> print pwd

>>> pwd = getpass.getpass(prompt='please input your password: ')

please input your password:

>>> print pwd

dudiaohanjiangxue

getpass模塊提供了兩個函數。

getpass.getpass([prompt[, stream]])：提示用戶輸入密碼。用戶輸入的內容並不會在屏幕上顯示出來。

###########

getpass.getuser()：獲得登陸的用戶名

>>> user = getpass.getuser()

>>> print user

root

#This function checks the environment variables LOGNAME, USER, LNAME and USERNAME, in order, and returns the value of the first one which is set to a non-empty string. If none are set, the login name from the password database is returned on systems which support the pwd module, otherwise, an exception is raised

#這個函數會按順序檢查環境變量：LOGNAME,USER,LNAME,USERNAME

>>> import os

>>> os.system('echo $LOGNAME')

root

0

>>> os.system('echo $USER')

root

0

>>> os.system('echo $LNAME')

0

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