记python首次学习，python3抓取链家网苏州二手房数据

2019年6月16日 141次阅读 来源: weixin_33724659

开发环境 pycharm 怎么安装百度～～

首先安装相应依赖包 终端下运行

pip install requests

pip install beautifulsoup4

pip install json

pip install re

思路很简单首先抓取取有详细的信息的url链接 使用正则

href中括号的意思是只提取这部分url,此处是坑～～

然后利用beautifulsoup轮询提取的url转换为xml提取数据

还有一坑链家网处理了点反爬不过也很简单把user-agent带上就好了～～

贴代码～～

from bs4 import BeautifulSoup;

import requests;

import json;

import re;

from multiprocessing import Pool;

def generate_allurl(user_in_nub):

url ='http://su.lianjia.com/ershoufang/pg{}/'
for url_next in range(1,int(user_in_nub)):
    get_allurl(url.format(url_next));
    # yield url.format(url_next);
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def get_allurl(generate_allurl):

headers = {
    'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.62 Safari/537.36'}
get_url = requests.get(generate_allurl,headers=headers)
if get_url.status_code == 200:
    # re_set = re.compile('<li.*?class="clear">.*?<a.*?cla1ss="img".*?href="(.*?)"')
    # re_set = re.compile('<div class="title"><a target="_blank">')

    re_set = re.compile('<div class="title"><a.*? href="(.*?)"')

    # re_set = re.compile('<a hr2ef="https://su.lianjia.com/ershoufang/.*" target="_blank" .* >.*</a>')
    # re_set = re.compile('')
    re_get = re.findall(re_set, get_url.text)
    # print(get_url.text)
    print(re_get)
    for url in re_get:
        open_url(url)
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def open_url(re_get):

headers = {
    'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.62 Safari/537.36'}
res = requests.get(re_get,headers=headers)
if res.status_code == 200:
    info = {}
    soup = BeautifulSoup(res.text,'lxml')
    info['标题'] = soup.select('.main')[0].text
    info['总价'] = soup.select('.total')[0].text + '万'
    info['每平方售价'] = soup.select('.unitPriceValue')[0].text
    print(info)
    return info
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def writer_to_text(list): # 储存到text22

 with open('链家二手房.text', 'a', encoding='utf-8')as f:
     f.write(json.dumps(list, ensure_ascii=False) + '\n')
     f.close()
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def main():

user_in_nub = input('输入生成页数:')
for i in generate_allurl(user_in_nub):
    print(i)
    # open_url(i)
# writer_to_text(open_url(url))  # 储存到text文件
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if name == ‘main‘:

main();

转载于:https://juejin.im/post/5cca56c851882540e61ff0be

    原文作者：weixin_33724659
    原文地址: https://blog.csdn.net/weixin_33724659/article/details/91425812
    本文转自网络文章，转载此文章仅为分享知识，如有侵权，请联系博主进行删除。
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