python爬虫（爬取羊车门作业的作业）

import requests
import json
import time
import os
from threading import Timer
def getHTML(url):
    try:
        r=requests.get(url,timeout=30)
        r.raise_for_status()
        r.encoding=r.apparent_encoding
        datas=json.loads(r.text)[‘data‘]
    except:
        print(‘连接失败‘)
    else:
        result=""
        for data in datas:
            result+=data[‘StudentNo‘]+‘,‘+data[‘RealName‘]+‘,‘+data[‘DateAdded‘]+‘,‘+data[‘Title‘]+‘,‘+data[‘Url‘]+‘\n‘
        f=open(‘F:\羊车门爬虫作业\hwlist.csv‘,‘w‘)
        f.write(result)
        f.close()
        os.mkdir(‘F:\羊车门爬虫作业\hwFolder‘)
        os.chdir(‘F:\羊车门爬虫作业\hwFolder‘)
        for data in datas:
            os.mkdir(data[‘StudentNo‘])
            os.chdir(data[‘StudentNo‘])        
            try:
                web=requests.get(data[‘Url‘],timeout=30)
                web.raise_for_status()
                web.encoding=web.apparent_encoding                
            except:
                print(‘连接失败‘)
            else:
               f=open(data[‘StudentNo‘]+‘.html‘,‘wb‘)
               f.write(web.content)
               f.close()
            os.chdir(os.path.pardir)
url=‘https://edu.cnblogs.com/Homework/GetAnswers?homeworkId=2420&_=1543216235911‘