#016 爬虫第一次尝试

import requests
from bs4 import BeautifulSoup
import bs4

def getHTMLText(url):
     try:
          r = requests.get(url, timeout = 30)
          r.raise_for_status()
          r.encoding = r.apparent_encoding
          return r.text
     
          
     except:
          return ""
          
     return ""

def fillUnivList(ulist,html):
     soup = BeautifulSoup(html, "html.parser")
     for tr in soup.find('tbody').children:
          if isinstance(tr, bs4.element.Tag):
               tds = tr('td')
               ulist.append([tds[0].string, tds[1].string, tds[2].string])

               
               
     

def printUnivList(ulist, num):
     print("{:^10}	{:^6}	{:^10}".format("排名","学校名称","总分"))
     for i in range(num):
          u=ulist[i]
          print("{:^10}	{:^6}	{:^10}".format(u[0],u[1],u[2]))

def main():
     uinfo = []
     url = 'http://www.zuihaodaxue.com/zuihaodaxuepaiming2016.html'
     html = getHTMLText(url)
     fillUnivList(uinfo,html)
     printUnivList(uinfo, 20)
main()
     

结合 这个课第一次敲得爬虫，，，，没有Pyhton语法，主要是老师说啥我咋敲，没有技术含量.就是不知道咋敲，一直报错。。