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 url='http://news.gzcc.cn/html/xiaoyuanxinwen/' res=requests.get(url) res.encoding='utf-8' soup = BeautifulSoup(res.text,'html.parser') for news in soup.select('li'): if len(news.select('.news-list-title'))>0: t=news.select('.news-list-title')[0].text dt=news.select('.news-list-info')[0].contents[0].text a=news.select('a')[0].attrs['href'] print(dt,t,a)
for news in soup.select('li'): if len(news.select('.news-list-title'))>0: t = news.select('.news-list-title')[0].text a = news.select('a')[0].attrs['href'] print(a) resd = requests.get(a) resd.encoding ='utf-8' soupd = BeautifulSoup(resd.text,'html.parser') print(soupd.select('#content')[0].text) break
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
for news in soup.select('li'): if len(news.select('.news-list-title'))>0: t = news.select('.news-list-title')[0].text a = news.select('a')[0].attrs['href'] print(a) resd = requests.get(a) resd.encoding ='utf-8' soupd = BeautifulSoup(resd.text,'html.parser') print(soupd.select('.show-info')[0].text) break
3. 将其中的发布时间由str转换成datetime类型
from _datetime import datetime str = '2018-03-30 17:10:12' dt =datetime.strptime(str,'%Y-%m-%d %H:%M:%S') now = datetime.now() type(now) now.strftime("%Y-%m-%d %H:%M:%S")