Python 之getpass模块

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

prompt:为用户输入的提示字符串，默认为：Password:

>>> pwd = getpass.getpass()

Password:

>>> print pwd

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

please input your password:

>>> print pwd

dudiaohanjiangxue

getpass模块提供了两个函数。

getpass.getpass([prompt[, stream]])：提示用户输入密码。用户输入的内容并不会在屏幕上显示出来。

###########

getpass.getuser()：获得登陆的用户名

>>> 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

#这个函数会按顺序检查环境变量：LOGNAME,USER,LNAME,USERNAME

>>> import os

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

root

0

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

root

0

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

0

推荐阅读：