爬取中国大学排名

buhaoshuooo

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 ''

def fillUnivList(ulist,html):
    soup = BeautifulSoup(html,'html.parser')
    for tr in soup.find('tbody').children:
        if isinstance(tr,bs4.element.Tag):  #确定tbody的儿子都是标签，无字符串
            tds = tr('td')
            ulist.append([tds[0].string,tds[1].string,tds[3].string])

def printUnivlist(ulist,num):
    print('{:^10}\t{:^6}\t{:^10}'.format ('排名','学校','分数'))
    for i in range(num):
        u = ulist[i]
        print('{:^10}\t{:^6}\t{:^10}'.format (u[0],u[1],u[3]))

def main():
    uinfo = []
    url = 'http://www.zuihaodaxue.com/zuihaodaxuepaiming2019.html'
    html = getHTMLText(url)
    fillUnivList(uinfo,html)
    printUnivlist(uinfo,10)
main()

运行一直显示错误，IndexError: list index out of range，请大佬帮忙看一下~

一个账号

就是超出索引访问了