py小bai
2021-04-01 16:51
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python爬虫初学,运行不报错但是没有结果?

import requests
from bs4 import BeautifulSoup
import bs4
def getHTMLText(url):
    try:
        r=request.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=th('td')
            ulist.append([tds[0].string,tds[1].string,tds[2].string])
    pass
def printUnivList(ulist,num):
    print("{:^10}\t{:^6}\t{:^10}".format("排名","学校名称","省市"))
    for i in range(num):
        u=ulist[i]
    print("{:^10}\t{:^6}\t{:^10}".format(u[0],u[1],u[2]))  
def main():
    uinfo=[]
    url="https://www.dxsbb.com/news/44368.html"
    html =getHTMLText(url)
    fillUnivList(uinfo,html)
    printUnivList(uinfo,30)
    main()

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