一、代码详情

import requestsfrom bs4 import BeautifulSoupalluniv = []def getHTMLText(url):    try:        r = requests.get(url,timeout = 30)        r.raise_for_status()        r.encoding = 'utf-8'        return r.text    except:        return "error"def fillunivlist(soup):    data=soup.find_all('tr')    for tr in data:        ltd =tr.find_all('td')        if len(ltd)==0:            continue        singleuniv=[]        for td in ltd:            singleuniv.append(td.string)        alluniv.append(singleuniv)def printunivlist(num):    print("{:^4}{:^10}{:^5}{:^8}{:^10}".format("排名","学校名字","省份","总分","培养规模"))    for i in range(num):        u=alluniv[i]        print("{:^4}{:^10}{:^5}{:^8}{:^10}".format(u[0],u[1],u[2],u[3],u[6]))def main(num):    url = "http://www.zuihaodaxue.cn/zuihaodaxuepaiming2019.html"    html=getHTMLText(url)    soup=BeautifulSoup(html,"html.parser")    fillunivlist(soup)    printunivlist(num)main(100)