python获取操作系统的用户名

函数：
getpass.getuser()    解释：
   Return the “login name” of the user. Availability: Unix, Windows.
   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.
代码如下：import getpassgetpass.getuser()