爬虫爬取2022年高三网的大学排行榜并保存为CSV文件

Question

1，爬取
2，爬取下来有很多代码，只挑出那个大学排行榜表格
3，按照原有的表格样式将表格移入CSV文件中。网址http://www.gaosan.com/gaokao/311315.html
4目前我只学过beautifulsoup，requests, csv, os, 请只用这几个库解答，谢谢

Answer 1

from urllib.request import urlopen
from bs4 import BeautifulSoup
import csv

req = urlopen('http://www.gaosan.com/gaokao/311315.html')
con = req.read()

bs = BeautifulSoup(con,features='html.parser')

all_tr = bs.find('table').find_all('tr')
all_td=[]
for i in all_tr:
    all_td.append(i.find_all('td'))

ranking=[]
for i in all_td:
    ranking.append([i[0].text, i[1].text, i[2].text, i[3].text])

with open('ranking.csv','w', newline='') as f:
    writer = csv.writer(f)
    writer.writerows(ranking)