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)
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+‘\t作者:‘+sh+‘\t审核:‘+sh1+‘\t来源:‘+sh2)
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)
