#!/usr/bin/env python3
# -*- coding: utf-8 -*-


import sys
import urllib
import json
from bs4 import BeautifulSoup

tags=[]
url='https://movie.douban.com/j/search_tags?type=movie'

response=urllib.request.urlopen(url,timeout=20)
result=json.loads(response.read())
tags=result['tags']

movies=[]
for tag in tags:
    limit=0
    while 1:
        url='https://movie.douban.com/j/search_subjects?type=movie&tag=' + tag + '&sort=recommend&page_limit=20&page_start=' + str(limit)
        print(url)
        response=urllib.request.urlopen(url,timeout=20)
        result=json.loads(response.read())

        result=result['subjects']

        if len(result)==0:
            break
        limit+=20
        for item in result:
            movies.append(item)

就这段代码，一直报ascii，不知道问题出在哪里，哪位大神给看看啊