爬虫作业

#爬虫中国大学排名
import re
import pandas as pd
import requests
from bs4 import BeautifulSoup
allUniv = []
def getHTMLText(url):
    try:
        r = requests.get(url, timeout=30)
        r.raise_for_status()
        r.encoding = 'utf-8'
        return r.text
    except:
        return ""
def fillUnivList(soup):
    soup.encode('utf-8')
    data = soup.find_all('tr')
    list1=[]
    for tr in data:
        ltd = tr.find_all('td')
        if len(ltd) == 0:
            continue
        singleUniv = []
        for td in ltd:
            temp=re.findall('[\u4e00-\u9fff]+' ,str(td))
            if td.string!=None and td.string!="[]":
                singleUniv.append(td.string)
            if temp!=[]:
                if type(temp)==list:
                    str1=''
                    for i in temp:
                        str1+=i
                    singleUniv.append(str1)
        allUniv.append(singleUniv)
    return allUniv
def printUnivList(num):
    print("{:^5}{:^4}{:^5}{:^10}{:^10}".format("排名", "学校名称", "省市", "类型", "总分"))
    for i in range(num):
        u = allUniv[i]
        u[0]=u[0][29:31]
        u[1]=u[1][:4]
        u[4]=u[4][25:31]
        print("{:^5} {:^4}{:^5}{:^10}{:^10}".format(u[0], u[1], u[2], u[3], u[4]))
def main(flag):
    url = 'https://www.shanghairanking.cn/rankings/bcur/201611'
    html = getHTMLText(url)
    soup = BeautifulSoup(html, "html.parser")
    list1=fillUnivList(soup)
    if flag==0:
        printUnivList(10)
    else:
        return  list1
def combination(list1,count):
    list2=[]
    for i in list1:
        list2.append(i[count])
    return list2
main(0)
list1=main(1)
def deal_data(list1):
    list_1=combination(list1,0)
    list_2=combination(list1,1)
    list_3=combination(list1,2)
    list_4=combination(list1,3)
    list_5=combination(list1,4)
    data = pd.DataFrame({
        "排名": list_1,
        "学校名称": list_2,
        '省市': list_3,
        '类型': list_4,
        '总分': list_5
    })
    return data
data=deal_data(list1)
data.to_csv('University_grade.csv',index=False)
print("22信计2班—2022310143137—黄志涛")