How to save web pictures to local python

#!/usr/bin/env Python
#coding=utf-8 
 
import time
import datetime
import sys
import random
import math
import uuid
import cookielib
import urllib2
import os
 
class GetImage():
 reload(sys)
 ('utf8') 
 '''
  Crawl the content of the web page file and save it to memory
 
  @url To grab the file, path+filename
  '''
 def get_file(self,url):
 try:
 cj=()
 opener=urllib2.build_opener((cj))
 urllib2.install_opener(opener)
  
 req=(url)
 operate=(req)
 data=()
 return data
 except BaseException, e:
 print e
 return None
 
 '''
  Save the file locally
 
  @path Local path
  @file_name File name
  @data File content
  '''
 def save_file(self,file_name, data):
 if data == None:
 return
  
 file=open(file_name, "wb")
 (data)
 ()
 ()
 def save_png_file(self,filename,url):
 self.save_file(filename,self.get_file(url))
  
if __name__=="__main__":
 
 h1 = GetImage()
 
 #h1.save_file('c:/log/',h1.get_file('http://1.1.1.1/doc/images/public/ICON/'))
 #url = 'http://1.1.1.1/doc/images/public/ICON/'
 #file_path ='c:/log/'
 #h1.save_png_file(file_path,url)