os os.path

#! /usr/bin/python
#coding=utf-8
import os
usrdir = '/usr/local'
os.chdir(usrdir)
cwd = os.getcwd()
print'***当前目录为: ',cwd

print '创建文件'
os.mkdir('example')
os.chdir('example')
cwd=os.getcwd()
print '***到新文件下的目录为： ',cwd

print '***dir list: ',os.listdir(cwd)

print '***create test file'
fobj = open('test' ,'w')
fobj.write('hadoop\n')
fobj.write('hive\n')
fobj.close()

print '***dir list: ',os.listdir(cwd)

print '***rename test to demo'
os.rename('test', 'demo')
print '***dir list: ',os.listdir(cwd)

path = os.path.join(cwd, os.listdir(cwd)[0])
print '***full file pathname: ' ,path
print '***(pathname ,basename) == ', os.path.split(path)
print '***(filename,extension) == ',os.path.splitext(os.path.basename(path))

print '**dispaly file contents: '
fobj = open(path)
for e in fobj:
print e
fobj.close()

print '***delete test file'
os.remove(path)

print os.listdir(cwd)
os.chdir(os.pardir)

print '***delete example dir'
os.rmdir('example')

print '***done'