从知乎上下载图片，转载的，自己备用

# -*- coding: utf-8 -*-
import requests  
import re  
import uuid
  
session=requests.session()  
questionurl='https://www.zhihu.com/question/36007260'  
agent=r'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.84 Safari/537.36'  
headers0={'user-agent':agent,
         'Host':'www.zhihu.com'}  
#requests.cookies=http.cookiejar.LWPCookieJar(filename='D:/pachongtest/cookies')  
index_page = session.get(questionurl, headers=headers0)  
cl=requests.utils.dict_from_cookiejar(session.cookies)  
#print (cl)  
if 'd_c0' in cl.keys():  
    dc0=cl['d_c0'].split('|')[0]  
else:  
    session.cookies.clear()  
    index_page = session.get(questionurl, headers=headers0)  
    cl=requests.utils.dict_from_cookiejar(session.cookies)  
    dc0=cl['d_c0'].split('|')[0]  
print (dc0)  
  
headers={'user-agent':agent,  
         'Host':'www.zhihu.com',  
         'X-UDID':dc0,  
         'Host':'www.zhihu.com','Referer':'https://www.zhihu.com/question/36007260','authorization':'oauth c3cef7c66a1843f8b3a9e6a1e3160e20'}  
#  
for j in range(0,3):  
    url='https://www.zhihu.com/api/v4/questions/36007260/answers?sort_by=default&include=data%5B%2A%5D.is_normal%2Cadmin_closed_comment%2Creward_info%2Cis_collapsed%2Cannotation_action%2Cannotation_detail%2Ccollapse_reason%2Cis_sticky%2Ccollapsed_by%2Csuggest_edit%2Ccomment_count%2Ccan_comment%2Ccontent%2Ceditable_content%2Cvoteup_count%2Creshipment_settings%2Ccomment_permission%2Ccreated_time%2Cupdated_time%2Creview_info%2Crelevant_info%2Cquestion%2Cexcerpt%2Crelationship.is_authorized%2Cis_author%2Cvoting%2Cis_thanked%2Cis_nothelp%2Cupvoted_followees%3Bdata%5B%2A%5D.mark_infos%5B%2A%5D.url%3Bdata%5B%2A%5D.author.follower_count%2Cbadge%5B%3F%28type%3Dbest_answerer%29%5D.topics&limit=20&offset={page}'.format(page=3+j*20)  
    
    page=requests.get(url,headers=headers)  
    #print (page.status_code)  
    allurlre=re.compile(r'data-actualsrc=\\"(.*?\.jpg)\\"',re.S)  
    allurl=re.findall(allurlre,page.text)  
    #print(page.text)  
    i=0  
    for urls in allurl:  
        gifpattern=re.compile('^(?!.*gif)')  
        m=re.match(gifpattern,urls)  
        if m:  
            print (str(i)+':'+urls)  
            file=requests.get(urls)  
            filename=r'D:\temp\img4\\'+str(j)+'_'+str(i)+'_'+ str(uuid.uuid1()) +'.jpg'  
            f=open(filename,'wb')  
            f.write(file.content)  
            f.close()  
            i=i+1