Python 简单的方法爬取b站dnf视频封面

import urllib.request
cnt=0
def instr(keystr):
st=keystr.find('(')+1
strhtml=keystr[st:len(keystr)-1]
return strhtml def picsave(strJson,number):
global cnt
strdic=strJson['data']['archives']
num=len(strdic)
for i in range(0,num,1):
cnt=cnt+1
strdic=strJson['data']['archives'][i]
print(strdic['pic'])
urllib.request.urlretrieve(strdic['pic'],'E:\图片\dnf\%s.jpg'%(cnt)) def urlget(num):
for i in range(1,num,1):
url='https://api.bilibili.com/x/tag/ranking/archives?callback=jQuery172014070206081723846_1514982701564&tag_id=5033&rid=65&type=0&pn='+str(i)+'&ps=20&jsonp=jsonp&_=1514982702144'
response=urllib.request.urlopen(url)
html=response.read().decode('utf-8')
html=instr(html)
strJson=eval(html)
picsave(strJson,i) urlget(6)
print("ok")