'''
初
参考嵩天老师代码
'''
import requests
from bs4 import BeautifulSoup
import bs4


def gettext(url):                   #获取url内容
    try:
        r = requests.get(url)
        r.raise_for_status()
        r.encoding = r.apparent_encoding
        return r.text
    except:
        return ''

def filllist(ulist,html):                   #解析HTML文本格式
    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 printlist(ulist,num):                                       #按照格式化列表输出
    print("{:^10}\t{:^6}\t{:^10}".format("排名","学校","总分"))
    for i in range(num):
        u = ulist[i]
        print("{:^10}\t{:^6}\t{:^10}".format(u[0],u[1],u[2]))


uinfo = []
url = 'http://www.zuihaodaxue.com/zuihaodaxuepaiming-zongbang-2020.html'
html = gettext(url)
filllist(uinfo,html)
printlist(uinfo,10)