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数据结构化与保存

时间:2017-10-18 21:16:25      阅读:209      评论:0      收藏:0      [点我收藏+]

1.结构化:

  • 单条新闻的详情字典:news
  • 一个列表页所有单条新闻汇总列表:newsls.append(news)
  • 所有列表页的所有新闻汇总列表:newstotal.extend(newsls)

2.转换成pandas的数据结构DataFrame

3.从DataFrame保存到excel

4.从DataFrame保存到sqlite3数据库

 

import requests
from bs4 import BeautifulSoup
import re
from  datetime  import  *
import pandas

def gethits(url_1):
    li_id =re.search(_.*/(.*).html,url_1).groups(0)[0]
    hits = requests.get(http://oa.gzcc.cn/api.php?op=count&id={}&modelid=80.format(li_id)).text.split(.)[-1].rstrip(‘‘‘‘);‘‘‘).lstrip(‘‘‘‘html(‘‘‘)
    return hits

def getdetail(url):
    res = requests.get(url)
    res.encoding = utf-8
    
    soup = BeautifulSoup(res.text,html.parser)
 
    news = {}
    news[url] = url
    if(soup.select(.show-title)):
        news[title] = soup.select(.show-title)[0].text
        info = soup.select(.show-info)[0].text
        news[dt] = datetime.strptime(info.lstrip(发布时间:)[0:19],%Y-%m-%d %H:%M:%S)
        news[source] = re.search(来源:(.*)点击,info).group(1).strip()
        news[content] = soup.select(.show-content)[0].text.strip()
        news[hits] = gethits(url)
    else:
        pass
    return news

def onepage(url_page):
    res = requests.get(url_page)
    res.encoding = utf-8
    
    soup = BeautifulSoup(res.text,html.parser)
    newsls = []

    for news in soup.select(li):
        if len(news.select(.news-list-title))>0:
            newsls.append(getdetail(news.select(a)[0][href]))
    return newsls

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

newstotal = []
newstotal.extend(onepage(url_main))

pages = int(soup.select(.a1)[0].text.rstrip())//10+1

for i in range(2,pages+1):
    url_page = "http://news.gzcc.cn/html/xiaoyuanxinwen/{}.html".format(i)
    
    newstotal.extend(onepage(url_page))

df = pandas.DataFrame(newstotal)
print(df.head())
df.to_excel(news.xlsx)

 

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数据结构化与保存

原文:http://www.cnblogs.com/zeson/p/7688913.html

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