import gzip
import os
def un_gz(file_name):
 """ungz zip file"""
 f_name = file_name.replace(".gz", "")
 #获取文件的名称，去掉
 g_file = gzip.GzipFile(file_name)
 #创建gzip对象
 open(f_name, "w+").write(g_file.read())
 #gzip对象用read()打开后，写入open()建立的文件里。
 g_file.close()
 #关闭gzip对象

import tarfile
def un_tar(file_name):
  untar zip file"""
 tar = tarfile.open(file_name)
 names = tar.getnames()
 if os.path.isdir(file_name + "_files"):
  pass
 else:
  os.mkdir(file_name + "_files")
 #因为解压后是很多文件，预先建立同名目录
 for name in names:
  tar.extract(name, file_name + "_files/")
 tar.close()

import rarfile
import os
def un_rar(file_name):
 """unrar zip file"""
 rar = rarfile.RarFile(file_name)
 if os.path.isdir(file_name + "_files"):
  pass
 else:
  os.mkdir(file_name + "_files")
 os.chdir(file_name + "_files"):
 rar.extractall()
 rar.close()

#!/usr/bin/env /usr/local/bin/python
 # encoding: utf-8
 import tarfile
 import os
 import time
 
 start = time.time()
 tar=tarfile.open('/path/to/your.tar,'w')
 for root,dir,files in os.walk('/path/to/dir/'): 
   for file in files:
     fullpath=os.path.join(root,file)
     tar.add(fullpath,arcname=file)
 tar.close()
 print time.time()-start

#!/usr/bin/env /usr/local/bin/python
# encoding: utf-8
import tarfile
import time

start = time.time()
t = tarfile.open("/path/to/your.tar", "r:") 
t.extractall(path = '/path/to/extractdir/') 
t.close()
print time.time()-start

tar = tarfile.open(filename, 'r:gz') 
for tar_info in tar:
 file = tar.extractfile(tar_info)
 do_something_with(file)

#coding=utf-8
import rarfile
path = "E:\\New\\New.rar"
path2 = "E:\\New"
rf = rarfile.RarFile(path)    　#待解压文件
rf.extractall(path2)        #解压指定文件路径