get the google dns list

gethost.py

# !/usr/bin/env python
#my first python script
import urllib2
import os
enable_proxy = True
proxy_hander = urllib2.ProxyHandler({"http" : 'http://127.0.0.1:8087'})
null_proxy_hander = urllib2.ProxyHandler({})
if enable_proxy:
    opener = urllib2.build_opener(proxy_hander)

else:
    opener = urllib2.build_opener(null_proxy_hander)
#urllib2.install_opener(opener)

content = opener.open('https://smarthosts.googlecode.com/svn/trunk/hosts_us').read()

f = open('data.txt', 'w')
f.write(content)
f.close()

rest = list()
f = open('data.txt', 'r')
for line in f.readlines():
    line = line.strip()
    rest.append(line)
f.close()


start = rest.index("#SmartHosts START")
end = rest.index("#SmartHosts END")

f = open('data_fiter.txt', 'w')
while start <= end:
    f.writelines(rest[start])
    f.write("\n")
    start += 1

f.close()


#clean
os.remove('data.txt')
os.rename('data_fiter.txt', 'hosts_us')