#!/usr/bin/env python
 
import os
from urlparse import urlparse
 
uri = os.environ['NAUTILUS_SCRIPT_CURRENT_URI']
result = urlparse(uri)
user,host = result.netloc.split('@')
path = result.path
print('user=',user)
print('host=',host)
print('path=',path)

进一步阅读：

> os.environ
> urlparse.urlparse()