爬虫

import requests

from bs4 import BeautifulSoup

import bs4

def getedhtml(url, code='utf-8'):

kv = {'user-agent': 'Mozilla/5.0'}

try:

     r = requests.get(url, headers=kv, timeout=30)

     r. raise_for_status()

     r.encoding = code

     return r.text

except:

        return ' '

def returned(html, list, num):

      count = 0

      soup = BeautifulSoup(html,  'html.parser')

      info =  soup.find('tbody', 'hidden_zhpm').children

      for tr in info:

           if count >= num:

                break

           if isinstance(tr, bs4.element.Tag):

               count += 1

               tds = tr.find_all('td')

               list.append([tds[0].contents[0],  tds[1],string, tds[3].string])

def printed(list, num):

      print('{0:^10}\t{1:{3}^10}\t{2:^10}'.format('排名',  '高校',  '分数', chr(12288)))

      for i in range(num):

           L = list[i]

           print('{0:^10}\t{1:{3}^10}\t{2:^10}'.format(L[0], L[1], L[2], chr(12288)))

def main():

      list = [ ]

      url = 'http://www.zuihaodaxue.com/zuihaodaxuepaiming2019.html'

      num = int(input('请问要查询2019前多少名的高校呢: '))

      html = getedhtml(url)

      returned(html, list, num)

      printed(list, num)

main()