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 new in soup.select('li'): if len(new.select('.news-list-info'))>0: s0 = new.select('.news-list-title')[0].text# 标题内容 s1 = new.select('a')[0].attrs['href'] # 链接 resd=requests.get(s1) resd.encoding = 'utf-8' soupd = BeautifulSoup(resd.text, 'html.parser') s2 = soupd.select('#content')[0].text #正文 print(s1+' '+s0,s2)
运行结果:
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。
import requests from bs4 import BeautifulSoup from datetime import datetime url='http://news.gzcc.cn/html/xiaoyuanxinwen/' res=requests.get(url) res.encoding='utf-8' soup=BeautifulSoup(res.text,'html.parser') for new in soup.select('li'): if len(new.select('.news-list-info'))>0: s1 = new.select('a')[0].attrs['href'] # 链接 resd=requests.get(s1) resd.encoding = 'utf-8' soupd = BeautifulSoup(resd.text, 'html.parser') info=soupd.select('.show-info')[0].text dt=info.lstrip('发布时间:')[:19]#发布时间 sh=info[info.find('作者:'):].split()[0].lstrip('作者:') #作者 sh1 = info[info.find('审核:'):].split()[0].lstrip('审核:') # 审核 sh2 = info[info.find('来源:'):].split()[0].lstrip('来源:') # 来源 print('发布时间:'+dt+' 作者:'+sh+' 审核:'+sh1+' 来源:'+sh2)
运行结果:
3. 将其中的发布时间由str转换成datetime类型。
import requests from bs4 import BeautifulSoup from datetime import datetime url='http://news.gzcc.cn/html/xiaoyuanxinwen/' res=requests.get(url) res.encoding='utf-8' soup=BeautifulSoup(res.text,'html.parser') for new in soup.select('li'): if len(new.select('.news-list-info'))>0: s1 = new.select('a')[0].attrs['href'] # 链接 resd=requests.get(s1) resd.encoding = 'utf-8' soupd = BeautifulSoup(resd.text, 'html.parser') info=soupd.select('.show-info')[0].text dt=info.lstrip('发布时间:')[:19]#发布时间 dati=datetime.strptime(dt,'%Y-%m-%d %H:%M:%S') print(dati)
运行结果: