网络爬虫作业

整体思路还行，但是细节不清楚，有很多问题，json库不太会，只能写这么多，那个result+=......是抄袭的，可以理解一点，有几个不懂

import requests
import json
url='https://edu.cnblogs.com/Homework/GetAnswers?homeworkId=2420&_=1542959851766'
def get_html(url):
r=requests.get(url)
r.raise_for_status()
r.encoding='utf-8'
return r.text
datas=json.loads(r.text)['data']
result=""
for data in datas:
result+=str(data['StudentNo'])+','+data['RealName']+','+data['DateAdded'].replace('T',' ')+','+data['Title']+','+data['Url']+'\n'
f=open(hwlist.csv,'w')
f.wright(result)