python的Gzip模块

import gzip #导入python gzip模块，注意名字为全小写
g = gzip.GzipFile(filename="", mode="wb", compresslevel=9, fileobj=open('sitemap.log.gz', 'wb'))#filename参数是压缩文件内文件的名字，为空也可以。fileobj是生成的压缩文件对象
g.write(open('d:\\test\\sitemap.xml').read())
g.close()

g = gzip.GzipFile(mode="rb", fileobj=open('d:\\test\\sitemap.log.gz', 'rb')) # python gzip 解压
open(r"d:\\haha.xml", "wb").write(g.read())

#-*-coding:utf8 -*-
import urllib2
from lxml import etree


request = urllib2.Request('http://outofmemory.cn/')

response = urllib2.urlopen(request)

print data.text()

#-*-coding:utf8 -*-
import urllib2
from lxml import etree
from StringIO import StringIO  #StringIO模块就是在内存中读写str
import gzip  #加压缩文件
request = urllib2.Request('http://outofmemory.cn/')
request.add_header('Accept-encoding', 'gzip') #添加头信息
response = urllib2.urlopen(request)
if response.info().get('Content-Encoding') == 'gzip':
    buf = StringIO( response.read()) #将读取的response信息作为stringIO方便后面作为文件写入
    f = gzip.GzipFile(fileobj=buf)  #解压缩response
    data = f.read()
print data