使用Python爬取最好大学网大学排名

#-*-coding:utf-8-*- ''''' Created on 2017年3月17日 @author: lavi ''' import requests from bs4 import BeautifulSoup import bs4 def getHTMLText(url):   try:     r = requests.get(url)     r.raise_for_status     r.encoding = r.apparent_encoding     return r.text   except:     return ""  def fillUnivList(univList,html):   soup = BeautifulSoup(html,"html.parser")   for tr in soup.find("tbody").children:     if isinstance(tr,bs4.element.Tag): #tobody有的节点是空串，属于要判断类型进行过滤       tds = tr("td") #等价于tr.find_all("td")       univList.append([tds[0].string,tds[1].string,tds[2].string]) #NavigableString可以跨越多个层次  def printUnivList(univList,num):   tplt = "{0:^6}/t{1:^10}/t{2:^6}" #:前的数字说明使用format函数的第几个参数填充模板   print(tplt.format("排名","学校名称","总分",chr(12288)))   for i in range(num):     u = univList[i]     print(tplt.format(u[0],u[1],u[2],chr(12288))) def main():   url= "http://www.zuihaodaxue.cn/zuihaodaxuepaiming2016.html";   html = getHTMLText(url)   univList=[]   fillUnivList(univList,html)   printUnivList(univList,20)    main()