python开发_getpass_获取登录名

我们有时候需要获取到计算机的登录名，这时候，就可以使用python中的getpass模块了

下面是我做的demo

运行效果：

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代码部分：

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 #python getpass

 #Author   :   Hongten
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 import getpass

 '''
     The getpass module provides two functions:

     getpass.getpass(prompt = 'Password:', stream = None)
         Prompt the user form a password without echoing.
         The user is prompted using the string prompt,which
         defaults to 'Password:' .On Unix, the prompt is written
         to the file-like object stream.stream defaults to the
         controlling terminal(/dev/tty) or if that is unavailable
         to sys.stderr(this argument is ignoed on Windows)

         if echo free input is unavailable getpass() falls back to
         printing a warning message to stream and reading from
         sys.stdin and issuing a GetPassWarning.

         Availablity:Macintosh,Unix,Windows.

         Note:
         if you call getpass from within IDLE,the input may be done in
         the terminal you launched IDLE from rather than the idle window
         itself.

         exception getpass.GetPassWarning
             A UserWarning subclass isssued when password input may be echoed.

         getpass.getuser()
             Return the 'login name' of the user.Availavility:Unix,Windows.

             This function checks the environment variables LOGNAME, USER,LNAME and
             USERNAME,in order, and returns the values 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.

 '''
 def get_system_user_name():
     '''return the 'login name' of the user.'''
     return getpass.getuser()

 def main():
     user_name = get_system_user_name()
     print('the system user\'s name is : [{}]'.format(user_name))

 if __name__ == '__main__':
     main()