Python爬取中国大学排名网站内容
爬取地址:
http://www.zuihaodaxue.com/zuihaodaxuepaiming2018.html
这个网址打开自动跳转到主页,故替换为:
https://www.shanghairanking.cn/rankings/bcur/201611
要求:
1. 爬取大学排名(学号尾号3,4,爬取年费2016)
2. 把爬取得数据,存为csv文件
代码:
import csv import os import requests from bs4 import BeautifulSoup AllUniv = [] def getHTMLText(url): try: r = requests.get(url, timeout=30) r.raise_for_status() r.encoding ='utf-8' return r.text except: return "" def fillUnivList(soup): data = soup.find_all('tr') for tr in data: ltd = tr.find_all('td') if len(ltd)==0: continue singleUniv = [] for td in ltd: singleUniv.append(td.string) AllUniv.append(singleUniv) def writercsv(save_road,num,title): if os.path.isfile(save_road): with open(save_road,'a',newline='')as f: csv_write=csv.writer(f,dialect='excel') for i in range(num): u=AllUniv[i] csv_write.writerow(u) else: with open(save_road,'w',newline='')as f: csv_write=csv.writer(f,dialect='excel') csv_write.writerow(title) for i in range(num): u=AllUniv[i] csv_write.writerow(u) title=["排名","学校名称","省市","类型","总分","生源质量","培养结果","科研规模(篇)",\ "科研质量(FWCI)","顶尖成果(篇)","顶尖人才(人)","科技服务(千元)",\ "产学研合作(篇)","成果转化(千元)"] save_road="E:\\排名.csv" url = 'https://www.shanghairanking.cn/rankings/bcur/202011' html = getHTMLText(url) soup = BeautifulSoup(html, "html.parser") fillUnivList(soup) writercsv(save_road,30,title)
结果:
爬不了