html_parser.py

# coding: utf8
from bs4 import BeautifulSoup
import re
import urlparse
class HtmlParser(object):
    def _get_new_urls(self, page_url, soup):
        new_urls = set()
        #/view/123.htm
        links = soup.find_all("a", href=re.compile(r"/view/\d+\.htm"))
        for link in links:
            new_url = link['href']
            new_full_url = urlparse.urljoin(page_url, new_url)
            new_urls.add(new_full_url)
        return new_urls

    def _get_new_data(self, page_url, soup):
        res_data = {}
        #url
        res_data['url'] = page_url
        #<dd class="lemmaWgt-lemmaTitle-title">
        title_node = soup.find('dd', class_ = "lemmaWgt-lemmaTitle-title").find("h1")
        res_data['title'] = title_node.get_text()
        #<div class="lemma-summary" label-module="lemmaSummary">
        summary_node = soup.find('div', class_= "lemma-summary")
        res_data['summary'] = summary_node.get_text()
        return res_data
    def parse(self, page_url, html_cont):
        if page_url is None or html_cont is None:
            return
        soup = BeautifulSoup(html_cont, 'html.parser', from_encoding="utf-8")
        new_urls = self._get_new_urls(page_url, soup)
        new_data = self._get_new_data(page_url, soup)
        return new_urls, new_data