using_os.py

《python编程金典》书中

#!/usr/bin/prthon
# -*- coding: cp936 -*-
#filename:using_os.py
import os

print "os is",os.name
print "current path",os.getcwd()
print "env is",os.getenv('path')
print "\n目录中",os.listdir(r'e:\biyelunwen')