爬取校园新闻首页的新闻

1. 用requests库和BeautifulSoup库，爬取校园新闻首页新闻的标题、链接、正文。

import requests
from bs4 import BeautifulSoup

res = requests.get('http://news.gzcc.cn/html/xiaoyuanxinwen/')
res.encoding='utf-8'
soup=BeautifulSoup(res.text,'html.parser')
for news in soup.select('li'):
    if len(news.select('.news-list-title'))> 0:
        d=news.select('.news-list-info')[0].contents[0].text
        t=news.select('.news-list-title')[0].text
        ti=news.select('a')[0].attrs['href']

        resf=requests.get(ti)
        resf.encoding='utf-8'
        soupd=BeautifulSoup(resf.text,'html.parser')
        s=soupd.select('.show-info')[0].text

        print(t,ti)
        print(soupd.select('#content')[0].text)

　

2. 分析字符串，获取每篇新闻的发布时间，作者，来源，摄影等信息

res2 = requests.get(ti)
        res2.encoding = 'utf-8'
        soup2 = BeautifulSoup(res2.text, 'html.parser')
        info = soup2.select('.show-info')[0].text
        info = info.lstrip('发布时间:').rstrip('点击：次')
        # print(info)
        time = info[:info.find('作者')] # 发布时间
        author = info[info.find('作者：')+3:info.find('审核')] # 作者
        check = info[info.find('审核：')+3:info.find('来源')]  # 审核
        source = info[info.find("来源：")+3:info.find('摄影')] # 来源
        print(time, author, check, source,end="")
        if(info.find("摄影：")>0):
            photogra = info[info.find("摄影：")+3:] # 摄影
            print(photogra)
        else:
            print()

　　

3.将其中的发布时间由str转换成datetime类型

res3 = requests.get('http://news.gzcc.cn/html/xiaoyuanxinwen/')
res3.encoding = 'utf-8'
soup3 = BeautifulSoup(res3.text,'html.parser')
 
for news in soup3.select('li'):
    if len(news.select('.news-list-title')) > 0:
 
        a = news.a.attrs['href']
        resq = requests.get(a)
        resq.encoding = 'utf-8'
        soupq = BeautifulSoup(resq.text,'html.parser')
        info = soupq.select('.show-info')[0].text
        dt = info.lstrip('发布时间:')[:19]
        from datetime import datetime
        dt = info.lstrip('发布时间:')[:19]
        dati = datetime.strptime(dt, '%Y-%m-%d %H:%M:%S')
        print(dati, dati.strftime('%Y/%m/%d'))

　　

4. 将完整的代码及运行结果截图发布在作业上。

import requests
from bs4 import BeautifulSoup

res = requests.get('http://news.gzcc.cn/html/xiaoyuanxinwen/')
res.encoding='utf-8'
soup=BeautifulSoup(res.text,'html.parser')
for news in soup.select('li'):
    if len(news.select('.news-list-title'))> 0:
        d=news.select('.news-list-info')[0].contents[0].text
        t=news.select('.news-list-title')[0].text
        ti=news.select('a')[0].attrs['href']

        resf=requests.get(ti)
        resf.encoding='utf-8'
        soupd=BeautifulSoup(resf.text,'html.parser')
        s=soupd.select('.show-info')[0].text

        print(t,ti)
        print(soupd.select('#content')[0].text)


        res2 = requests.get(ti)
        res2.encoding = 'utf-8'
        soup2 = BeautifulSoup(res2.text, 'html.parser')
        info = soup2.select('.show-info')[0].text
        info = info.lstrip('发布时间:').rstrip('点击：次')
        
        time = info[:info.find('作者')]
        author = info[info.find('作者：')+3:info.find('审核')]
        check = info[info.find('审核：')+3:info.find('来源')]
        source = info[info.find("来源：")+3:info.find('摄影')]
        print(time, author, check, source,end="")
        if(info.find("摄影：")>0):
            photogra = info[info.find("摄影：")+3:]
            print(photogra)
        else:
            print()

res3 = requests.get('http://news.gzcc.cn/html/xiaoyuanxinwen/')
res3.encoding = 'utf-8'
soup3 = BeautifulSoup(res3.text,'html.parser')
 
for news in soup3.select('li'):
    if len(news.select('.news-list-title')) > 0:
 
        a = news.a.attrs['href']
        resq = requests.get(a)
        resq.encoding = 'utf-8'
        soupq = BeautifulSoup(resq.text,'html.parser')
        info = soupq.select('.show-info')[0].text
        dt = info.lstrip('发布时间:')[:19]
        from datetime import datetime
        dt = info.lstrip('发布时间:')[:19]
        dati = datetime.strptime(dt, '%Y-%m-%d %H:%M:%S')
        print(dati, dati.strftime('%Y/%m/%d'))