Python爬虫包 BeautifulSoup 学习（五）实例

￡神魔★判官ぃ 2022-07-13 04:23 224阅读 0赞

## BeautifulSoup ##

使用BeautifulSoup抓取豆瓣电影的一些信息。

# -*- coding: utf-8 -*-
    # @Author: HaonanWu
    # @Date: 2016-12-24 16:18:01
    # @Last Modified by: HaonanWu
    # @Last Modified time: 2016-12-24 17:25:33
    
    import urllib2
    import json
    from bs4 import BeautifulSoup
    
    def nowplaying_movies(url):
        user_agent = 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.99 Safari/537.36'
        headers = {
       'User-Agent':user_agent}
        request = urllib2.Request(url = url, headers = headers)
        response = urllib2.urlopen(request)
        soup_packetpage = BeautifulSoup(response, 'lxml')
        items = soup_packetpage.findAll("li", class_="list-item")
        # items = soup_packetpage.findAll("li", {"class" : "list-item"}) 等价写法
        movies = []
        for item in items:
            if item.attrs['data-category'] == 'nowplaying':
                movie = {}
                movie['title'] = item.attrs['data-title']
                movie['score'] = item.attrs['data-score']
                movie['director'] = item.attrs['data-director']
                movie['actors'] = item.attrs['data-actors']
                movies.append(movie)
                print('%(title)s|%(score)s|%(director)s|%(actors)s' % movie)
    
        return movies
    
    
    
    if __name__ == '__main__':
        url = 'https://movie.douban.com/nowplaying/beijing/'
        movies = nowplaying_movies(url)
    
        print('%s' % json.dumps(movies, sort_keys=True, indent=4, separators=(',', ': ')))

## HTMLParser ##

使用HTMLParser实现上述功能

这里有一些HTMLParser的基础教程

由于HtmlParser自2006年以后就再没更新，目前很多人推荐使用jsoup代替它。

# -*- coding: utf-8 -*-
    # @Author: HaonanWu
    # @Date: 2016-12-24 15:57:54
    # @Last Modified by: HaonanWu
    # @Last Modified time: 2016-12-24 17:03:27
    from HTMLParser import HTMLParser
    import urllib2
    import json
    
    class MovieParser(HTMLParser):
        def __init__(self):
            HTMLParser.__init__(self)
            self.movies = []
    
        def handle_starttag(self, tag, attrs):
            def _attr(attrlist, attrname):
                for attr in attrlist:
                    if attr[0] == attrname:
                        return attr[1]
                return None
            if tag == 'li' and _attr(attrs, 'data-title') and _attr(attrs, 'data-category') == 'nowplaying':
                movie = {}
                movie['title'] = _attr(attrs, 'data-title')
                movie['score'] = _attr(attrs, 'data-score')
                movie['director'] = _attr(attrs, 'data-director')
                movie['actors'] = _attr(attrs, 'data-actors')
                self.movies.append(movie)
                print('%(title)s|%(score)s|%(director)s|%(actors)s' % movie)
    
    
    def nowplaying_movies(url):
        headers = {
       'User-Agent' : 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.99 Safari/537.36'}    
        req = urllib2.Request(url, headers=headers)
        s = urllib2.urlopen(req)
        parser = MovieParser()
        parser.feed(s.read())
        s.close()
        return parser.movies
    
    
    if __name__ == '__main__':
        url = 'https://movie.douban.com/nowplaying/beijing/'
        movies = nowplaying_movies(url)
    
        print('%s' % json.dumps(movies, sort_keys=True, indent=4, separators=(',', ': ')))