码迷,mamicode.com
首页 > 其他好文 > 详细

用requests库和BeautifulSoup4库爬取新闻列表

时间:2017-09-28 18:38:32      阅读:166      评论:0      收藏:0      [点我收藏+]

标签:show   操作   new   color   .text   code   主题   def   链接   

1、用requests库和BeautifulSoup4库,爬取校园新闻列表的时间、标题、链接、来源、详细内容

import requests
from bs4 import BeautifulSoup

gzccurl = http://news.gzcc.cn/html/xiaoyuanxinwen/
res = requests.get(gzccurl)
res.encoding=utf-8
soup = BeautifulSoup(res.text,html.parser)

for news in soup.select(li):
    if len(news.select(.news-list-title))>0:
        title = news.select(.news-list-title)[0].text #标题
        url = news.select(a)[0][href] #路径
        time = news.select(.news-list-info)[0].contents[0].text #时间
        source = news.select(.news-list-info)[0].contents[1].text #来源
        #正文
        resd = requests.get(url)
        resd.encoding=utf-8
        soupd = BeautifulSoup(resd.text,html.parser)
        detail = soupd.select(.show-content)[0].text
        print(time,title,url,source)
        print(detail)
        break

技术分享

2、将其中的时间str转换成datetime类型

import requests
from bs4 import BeautifulSoup
from datetime import datetime

gzccurl = http://news.gzcc.cn/html/xiaoyuanxinwen/
res = requests.get(gzccurl)
res.encoding=utf-8
soup = BeautifulSoup(res.text,html.parser)

for news in soup.select(li):
    if len(news.select(.news-list-title))>0:
        title = news.select(.news-list-title)[0].text #标题
        url = news.select(a)[0][href] #路径
        time = news.select(.news-list-info)[0].contents[0].text #时间
        dt = datetime.strptime(time,%Y-%m-%d)
        source = news.select(.news-list-info)[0].contents[1].text #来源
        #正文
        resd = requests.get(url)
        resd.encoding=utf-8
        soupd = BeautifulSoup(resd.text,html.parser)
        detail = soupd.select(.show-content)[0].text
        print(dt,title,url,source)
        print(detail)
        break

技术分享

 

3、将取得详细内容的代码包装成函数

import requests
from bs4 import BeautifulSoup
from datetime import datetime

gzccurl = http://news.gzcc.cn/html/xiaoyuanxinwen/
res = requests.get(gzccurl)
res.encoding=utf-8
soup = BeautifulSoup(res.text,html.parser)

def getdetail(url):
    resd = requests.get(url)
    resd.encoding=utf-8
    soupd = BeautifulSoup(resd.text,html.parser)
    return soupd.select(.show-content)[0].text

for news in soup.select(li):
    if len(news.select(.news-list-title))>0:
        title = news.select(.news-list-title)[0].text #标题
        url = news.select(a)[0][href] #路径
        time = news.select(.news-list-info)[0].contents[0].text #时间
        dt = datetime.strptime(time,%Y-%m-%d)
        source = news.select(.news-list-info)[0].contents[1].text #来源
        #正文
        detail =  getdetail(url)
        print(dt,title,url,source)
        print(detail)
        break

技术分享

 

4、选一个自己感兴趣的主题,做类似的操作,为后面“爬取网络数据并进行文本分析”做准备

import requests
from bs4 import BeautifulSoup
from datetime import datetime

gzccurl = http://news.gzcc.cn/html/meitishijie/
res = requests.get(gzccurl)
res.encoding=utf-8
soup = BeautifulSoup(res.text,html.parser)

def getdetail(url):
    resd = requests.get(url)
    resd.encoding=utf-8
    soupd = BeautifulSoup(resd.text,html.parser)
    return soupd.select(.show-content)[0].text

for news in soup.select(li):
    if len(news.select(.news-list-title))>0:
        title = news.select(.news-list-title)[0].text #标题
        url = news.select(a)[0][href] #路径
        time = news.select(.news-list-info)[0].contents[0].text #时间
        dt = datetime.strptime(time,%Y-%m-%d)
        #正文
        detail =  getdetail(url)
        print(dt,title,url,detail)
        break

技术分享

 

用requests库和BeautifulSoup4库爬取新闻列表

标签:show   操作   new   color   .text   code   主题   def   链接   

原文地址:http://www.cnblogs.com/zjq-013/p/7605914.html

(0)
(0)
   
举报
评论 一句话评论(0
登录后才能评论!
© 2014 mamicode.com 版权所有  联系我们:gaon5@hotmail.com
迷上了代码!