Python 爬虫之下载图片

from urllib import request
import json

#---------获取网页源代码--------------
def getHtml(url):
    response=request.urlopen(url)
    html=response.read()
    html=html.decode("utf-8")
    return html

#---------下载图片--------------
def downImg(url,filename):
    path="D:\\Python\\img\\"+filename
    request.urlretrieve(url,path)

page=
while page<:
    url="https://tu.fengniao.com/ajax/ajaxTuPicList.php?page="+str(page)+"&tagsId=13&action=getPicLists"
    html=getHtml(url)
    data_json=json.loads(html)
    index=
    for x in data_json["photos"]["photo"]:
        downImg(x["src"],x["id"]+".jpg")
        print("页码"+str(page)+",索引："+str(index)+",地址："+x["src"])
        index=index+
    page=page+