网络爬虫

完成了第一部分，还有些不太明白，借鉴了网上的一些内容。

import requests 
import json
a=requests.get('http://edu.cnblogs.com/Homework/GetAnswers?homeworkId=2420&_=1543835964941')
if a.status_code==200:
    datas=json.loads(a.text)['data']
    result=''
    for data in datas:
        result=result+str(data['StudentNo'])+'\t'+','+data['RealName']+','+data['Title']+','+data['DateAdded'].replace('T',' ')+'\t'+','+data['Url']+'\n'
    with open('E:\hwlist.csv','w') as c:
        c.write(result)
         
else:
    print('错误')