Python搜索引擎爬虫中的多线程导致挂起

Question

我正在尝试自学编程，而且我遇到了多线程的墙，我正在使用它尝试并加快我的谷歌爬虫，有人能指出我正确的方向吗？

  Intent intent = getIntent();
     if(intent !=null){
          String[] myStrings = intent.getStringArrayExtra("strings");
      }

和

# Requires a search string and page numbers to scan
def google(search_string, start):
    temp                = []
    url                 = 'http://www.google.com/search'
    payload             = { 'q' : search_string, 'start' : start }
    my_headers          = { 'User-agent' : 'Mozilla/11.0' }
    r                   = requests.get( url, params = payload, headers = my_headers )
    r.text.encode('utf-8')
    soup                = BeautifulSoup( r.text, 'html.parser' )
    h3tags              = soup.find_all( 'h3', class_='r' )
        # Prints and writes output of scrapped URLs
    with open(str("test.txt"), "w") as out_15:
        for h3 in h3tags:
            try:
                print( re.search('url\?q=(.+?)\&sa', h3.a['href']).group(1) )
                temp.append( re.search('url\?q=(.+?)\&sa', h3.a['href']).group(1) )
            except:
                continue
    return temp