关于Day-14里request的用法看不懂，有大神可以帮忙解答么？

rom time import time
from threading import Thread

import requests

class DownloadHanlder(Thread):

def __init__(self, url):
    super().__init__()
    self.url = url

def run(self):
    filename = self.url[self.url.rfind('/') + 1:]
    resp = requests.get(self.url)
    with open('/Users/e2qiuwe/' + filename, 'wb') as f:
        f.write(resp.content)

def main():
# 通过requests模块的get函数获取网络资源
# 下面的代码中使用了天行数据接口提供的网络API
# 要使用该数据接口需要在天行数据的网站上注册
# 然后用自己的Key替换掉下面代码的中APIKey即可
resp = requests.get(
'http://api.tianapi.com/meinv/?key=APIKey&num=268a10eb01d58a13c1a2f5fd920770f8')
# 将服务器返回的JSON格式的数据解析为字典
data_model = resp.json()
for mm_dict in data_model['newslist']:
url = mm_dict['picUrl']
# 通过多线程的方式实现图片下载
DownloadHanlder(url).start()

if name == 'main':
main()

我run的时候报错：KeyError: 'newslist'
我不是很懂这里面
for mm_dict in data_model['newslist']:
url = mm_dict['picUrl']
newslist和picUrl这俩参数代表啥？

Start with the Day-14 example and the main() entry point, then inspect the value returned by requests.get(...).json() before the data_model['newslist'] lookup. Done means documenting the response fields used by the loop and clarifying the reported KeyError; no file or test is named in the issue.