近日爬取疫情新闻数据，顺便把代码整理了一下，分享出来

from bs4 import BeautifulSoup
import re
import requests

def get_content(url):
    res = requests.get(url)
    res.encoding = 'utf-8'
    soup = BeautifulSoup(res.content, 'html.parser')
    newlist = soup.find_all('p')
    content=''
    for i in newlist[:-4:]:
        content+=i.text
    return content
#把文件存储在linajie.txt

data=[]
for i in range(25,39):
 filename = '新浪2020' +str(i)+'.csv'
 newsurl='https://search.sina.com.cn/?q=%e8%82%ba%e7%82%8e%e7%96%ab%e6%83%85&c=news&from=&col=1_3&range=title&source=&country=&size=10&stime=m-01-01+00%3A00%3A00&etime=m-12-31+23%3A59%3A59&time=m&dpc=0&a=&ps=0&pf=0&page={}'.format(i)
 #https://search.sina.com.cn/?q=%e7%96%ab%e6%83%85&c=news&from=&col=&range=title&source=&country=&size=10&stime=&etime=&time=&dpc=0&a=&ps=0&pf=0&page=2
 res = requests.get(newsurl)
 soup = BeautifulSoup(res.text,'html.parser')
 a=soup.find_all('h2')
 for i in a:
    i=str(i)
    pattern='<h2><a href="(.*?)" target="_blank">(.*?<font color="red">疫情</font>.*?)</a>(?:.|\n)<span class="fgray_time">(?:.|\n).*? (.*?) .*?</span></h2>'
    title=re.findall(pattern,i)
    #处理标题
    for i,j,k in title:
        pattern='(.*?)<font color="red">(疫情)</font>(.*?)$'
        j=re.findall(pattern,j)
        for a,b,c in j:
            j=a+b+c
        title=[k,j,i,get_content(i)]
    data.append(title)
 with open(filename,'w',encoding='utf_8_sig',newline="") as f:
    f.write('时间,标题,链接,内容\n')
    i=0
    while i<len(data):
        line=data[i][0]
        f.write(data[i][0]+','+data[i][1]+','+data[i][2]+','+data[i][3]+'\n')
        i+=1
 f.close()
 print("已保存文件")

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