写了个小爬虫，为何用上代理ip总是出现错误。

import urllib.request
import re
import os
import random
import threading

def url_open(url):  #在第8到第12行，总是无法正常运行，代理Ip是从网上免费代理ip获取的。
    #ips = ['117.136.234.12:80', '218.189.26.20:8080','202.194.101.150:80','180.166.112.47:8888']
        
    #proxy = urllib.request.ProxyHandler({'http':random.choice(ips)})#{'http':'124.202.174.66:8118'}
    #opener = urllib.request.build_opener(proxy)
    #opener.addheaders = [('User-Agent','Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/30.0.1599.101 Safari/537.36')]
        
    #urllib.request.install_opener(opener)

    req = urllib.request.Request(url)
    
    req.add_header('User-Agent','Mozilla/5.0')
    urlobject = urllib.request.urlopen(req)
    response = urlobject.read()
    return response
    
def find_page(html):
    s2 = r'[d{4}]'
    m = re.search(s2, html)
    page = m.group()
    print("find_page")
    return page

def find_page_link(html):
    s = r'http://ww[0-9].sinaimg.cn/mw600/w+.jpg'
    m = re.findall(s, html)
    return m


def save_page(jpg):
    for file in jpg:
        data = url_open(file)
        #print("wwwwwwwwww")
        name = "E:\作业\j_d\"+file.split('/')[-1]
        with open(name, 'wb') as f:
            f.write(data)
        

def down_jpg(dir_name='E:作业j_d', page=10, pages=10):
    #os.mkdir(dir_name)
    os.chdir(dir_name)
    #red = url_open('http://jandan.net/ooxx')
    #print(type(red))
    #red = red.decode('utf-8')
    
    #page = find_page(red)
    #page = int(page[1:-1])
    #page = 1333
    for i in range(pages):
        page += 1
        url = 'http://jandan.net/ooxx/page-'+str(page)+'#comments'
        print(url)
        data = url_open(url)
        data = data.decode('utf-8')
        print("dddddddddddddd")
        page_list = find_page_link(data)
        #print("sssssssssssssss")
        save_page(page_list)
    

if __name__ == '__main__':
    p = threading.Thread(target=down_jpg,args=('E:作业j_d',1555,10))
    c = threading.Thread(target=down_jpg,args=('E:作业j_d',1024,10))
    #down_jpg()
    p.start()
    c.start()

    p.join()
    c.join()