上一篇文章的正則，其實(shí)對(duì)很多人來(lái)說(shuō)用起來(lái)是不方便的，加上需要記很多規(guī)則，所以用起來(lái)不是特別熟練，而這節(jié)我們提到的beautifulsoup就是一個(gè)非常強(qiáng)大的工具，爬蟲(chóng)利器。
beautifulSoup “美味的湯，綠色的濃湯”
一個(gè)靈活又方便的網(wǎng)頁(yè)解析庫(kù)，處理高效，支持多種解析器。
利用它就不用編寫正則表達(dá)式也能方便的實(shí)現(xiàn)網(wǎng)頁(yè)信息的抓取
快速使用
通過(guò)下面的一個(gè)例子，對(duì)bs4有個(gè)簡(jiǎn)單的了解，以及看一下它的強(qiáng)大之處：
from bs4 import BeautifulSoup
html = '''<html><head><title>The Dormouse's story</title></head>
<body>
<p class="title"><b>The Dormouse's story</b></p>
<p class="story">Once upon a time there were three little sisters; and their names were
<a href="http://example.com/elsie" class="sister" id="link1">Elsie</a>,
<a href="http://example.com/lacie" class="sister" id="link2">Lacie</a> and
<a href="http://example.com/tillie" class="sister" id="link3">Tillie</a>;
and they lived at the bottom of a well.</p>
<p class="story">...</p>'''soup = BeautifulSoup(html,'lxml')print(soup.prettify())print(soup.title)print(soup.title.name)print(soup.title.string)print(soup.title.parent.name)print(soup.p)print(soup.p["class"])print(soup.a)print(soup.find_all('a'))print(soup.find(id='link3'))