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‘) news = soup.select(‘li‘) for new in news: if len(new.select(‘.news-list-title‘)) > 0: title = new.select(‘.news-list-title‘)[0].text href = new.select(‘a‘)[0].attrs[‘href‘] text = new.select(‘.news-list-description‘)[0].text print(title) print(href) print(text+‘\n‘)
图片只展示部分
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 url = ‘http://news.gzcc.cn/html/xiaoyuanxinwen/‘ res = requests.get(url) res.encoding = ‘utf-8‘ soup = BeautifulSoup(res.text, ‘html.parser‘) news = soup.select(‘li‘) for new in news: if len(new.select(‘.news-list-title‘)) > 0: title = new.select(‘.news-list-title‘)[0].text href = new.select(‘a‘)[0].attrs[‘href‘] text = new.select(‘.news-list-description‘)[0].text res = requests.get(href) res.encoding = ‘utf-8‘ soup = BeautifulSoup(res.text, ‘html.parser‘) info = soup.select(‘.show-info‘)[0].text content = info.split() time = content[0].lstrip(‘发布时间:‘) + " " + content[1] author = content[2].lstrip(‘作者：‘) check = content[3].lstrip(‘审核：‘) source = content[4].lstrip("来源：") print(time, author, check, source)
3. 将其中的发布时间由str转换成datetime类型。
from datetime import datetime time = ‘2018-04-04 05:20:34‘ a = datetime.strptime(time, ‘%Y-%m-%d %H:%M:%S‘) print(type(a)) print(a, a.strftime(‘%Y/%m/%d‘))
4. 将完整的代码及运行结果截图发布在作业上。