代码内容：
url = 'https://movie.douban.com/j/search_subjects?type=movie'+ str(tag) + '&sort=recommend&page_limit=20&page_start=' + str(limit)
response = urllib.request.urlopen(url, timeout=20)
result = response.read().decode('utf-8','ignore').replace(u'\xa9', u'')
result = json.loads(result)
url = 'https://movie.douban.com/j/s
