Python爬蟲——Ajax豆瓣json

import urllib
import  urllib.request

url="https://movie.douban.com/j/new_search_subjects?sort=U"
headers = {
    "User-Agent": "Mozilla / 5.0(iPhone;CPUiPhoneOS11_0likeMacOSX) AppleWebKit / 604.1.38(KHTML, likeGecko) Version / 11.0Mobile / 15A372Safari / 604.1"
}
formdata={

    "range":"0,10",

    "start":"20",
    "countries":"中國大陸"

}
data = urllib.parse.urlencode(formdata).encode(encoding='UTF8')
requests = urllib.request.Request(url,data=data,headers=headers)
print(urllib.request.urlopen(requests).read().decode("utf-8"))