最新操作
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: # print(news.select('.news-list-title')) for newc in soup.select('li'): if len(newc.select('.news-list-title'))>0:
d=newc.select('a')[0].attrs['href']
res1=requests.get(d)
res1.encoding="utf-8"
e=BeautifulSoup(res1.text,'html.parser')
content=e.select('#content')[0].text
show=e.select('.show-info')[0].text
print(content,show)
2. 分析字符串,获取每篇新闻的发布时间,作者,来源,摄影。
for news in soup.select('li'): if len(news.select('.news-list-title'))>0: title = news.select('.news-list-title')[0].get_text() time = news.select('.news-list-info span')[0].get_text() href = news.select('a')[0].attrs['href'] print(time,title,href) res1 = requests.get(href) res1.encoding = "utf-8" soup = BeautifulSoup(res1.text, "html.parser") con = soup.select('#content')[0].tedtxt info = soup.select('.show-info')[0].get_text() dt = info.lstrip('发布时间:')[:19] dt2 = datetime.strptime(dt,'%Y-%m-%d %H:%M:%S') print(dt2) ///此处代码参考117李智濠 i = info.find('来源:') if i>0: s = info[info.find('来源:'):].split()[0].replace('来源:') print(s) a = info.find('作者:') if a > 0: l = info[info.find('作者:'):].split()[0].replace('作者:') print(l) y = info.find('摄影:') if y > 0: u = info[info.find('作者:'):].split()[0].replace('作者:') print(u)
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' dt1 = datetime.strptime(str,'%Y-%M-%D %H:%M:%S').year now = datetime.now() type(now) now.strftime("%Y-%M-%D %H:%M:%S")