Question

这是html页面的一部分，我需要从中提取以下项目：名称来自强标签，分类类型（演员和歌手），出生和死亡的位置。

<li class="clearfix">
   <div style="margin-top:10px;">
      <div class="float-left" style="margin-bottom:10px;">
         <a href="http://" title="Elvis Presley" name="Elvis Presley" class="float-left">
         <strong>Mr. Elvis Presley</strong></a>
      </div>
      <div class="rating_overall fleft" style="margin:0px 0px 0px 10px;">
         <div class="rating_overall voted_rating_overall" style='width:72.96px;'></div>
      </div>
      <span class="result-vote float-left" id="result" style="line-height:15px; color: #AAA; font-size: 0.9em; margin-top: 1px;"> &nbsp; (15 vots)</span>
      <div class="clear"></div>
      <a href="http://" title="Mr. Elvis Presley" name="Mr. Elvis Presley">
      <img style="float:left;" src="http://a.jpg" alt="Mr. Elvis Presley" title="Mr. Elvis Presley"  />
      </a>
      <br/>
      <p>
         <b>Classification:</b>
         <a href="http://" title="Actor " name="Actor " class="underline">Actor </a>
         ,                      <a href="" title="Singer" name="Singer" class="underline">Singer</a>
         <br />
         <b>Born:</b> <a href="http://" title="Tupelo" name="Tupelo" class="underline">Tupelo</a><br />
         <b>Died:</b>
         Memphis,
         <!--<b>City:</b>-->
         <a href="http://" title="Memphis" name="Memphis" class="underline">Memphis</a>
      </p>
      <div class="clk"></div>
   </div>
</li>

我曾尝试使用BeautifulSoup，但我是python上的新手：

    data2 = soup.find_all('li',{'class':'clearfix'})

for container in data2:
    if container.find('a', {'class':'float-left'}):
        name = container.a.text
        print (name)

    if container.find('a', {'class':'underline'}):
        classification=container.div.p.a.text
        print (classification)


flag

虽然我没有从脚本中得到任何错误，但我设法只提取了名称和第一个分类。如何定位我需要的其他元素：分类（“歌手”）以及出生和死亡的位置？

Answer 1

你可以使用漂亮的汤作为html解析器，我首先用漂亮的汤向你展示，然后用正则表达式向你展示，并用群组捕获来捕捉结果：

首先是美味的汤：

string_1="""<li class="clearfix">
   <div style="margin-top:10px;">
      <div class="float-left" style="margin-bottom:10px;">
         <a href="http://" title="Elvis Presley" name="Elvis Presley" class="float-left">
         <strong>Mr. Elvis Presley</strong></a>
      </div>
      <div class="rating_overall fleft" style="margin:0px 0px 0px 10px;">
         <div class="rating_overall voted_rating_overall" style='width:72.96px;'></div>
      </div>
      <span class="result-vote float-left" id="result" style="line-height:15px; color: #AAA; font-size: 0.9em; margin-top: 1px;"> &nbsp; (15 vots)</span>
      <div class="clear"></div>
      <a href="http://" title="Mr. Elvis Presley" name="Mr. Elvis Presley">
      <img style="float:left;" src="http://a.jpg" alt="Mr. Elvis Presley" title="Mr. Elvis Presley"  />
      </a>
      <br/>
      <p>
         <b>Classification:</b>
         <a href="http://" title="Actor " name="Actor " class="underline">Actor </a>
         ,                      <a href="" title="Singer" name="Singer" class="underline">Singer</a>
         <br />
         <b>Born:</b> <a href="http://" title="Tupelo" name="Tupelo" class="underline">Tupelo</a><br />
         <b>Died:</b>
         Memphis,
         <!--<b>City:</b>-->
         <a href="http://" title="Memphis" name="Memphis" class="underline">Memphis</a>
      </p>
      <div class="clk"></div>
   </div>
</li>"""

from bs4 import BeautifulSoup
soup=BeautifulSoup(string_1,"html.parser")
for a in soup.find_all('a'):
    print(a['name'])

输出：

Elvis Presley
Mr. Elvis Presley
Actor 
Singer
Tupelo
Memphis

第二个是正则表达式：

如果表单代码与您在那里显示的相同，请使用它：

import re
string_1="""<li class="clearfix">
   <div style="margin-top:10px;">
      <div class="float-left" style="margin-bottom:10px;">
         <a href="http://" title="Elvis Presley" name="Elvis Presley" class="float-left">
         <strong>Mr. Elvis Presley</strong></a>
      </div>
      <div class="rating_overall fleft" style="margin:0px 0px 0px 10px;">
         <div class="rating_overall voted_rating_overall" style='width:72.96px;'></div>
      </div>
      <span class="result-vote float-left" id="result" style="line-height:15px; color: #AAA; font-size: 0.9em; margin-top: 1px;"> &nbsp; (15 vots)</span>
      <div class="clear"></div>
      <a href="http://" title="Mr. Elvis Presley" name="Mr. Elvis Presley">
      <img style="float:left;" src="http://a.jpg" alt="Mr. Elvis Presley" title="Mr. Elvis Presley"  />
      </a>
      <br/>
      <p>
         <b>Classification:</b>
         <a href="http://" title="Actor " name="Actor " class="underline">Actor </a>
         ,                      <a href="" title="Singer" name="Singer" class="underline">Singer</a>
         <br />
         <b>Born:</b> <a href="http://" title="Tupelo" name="Tupelo" class="underline">Tupelo</a><br />
         <b>Died:</b>
         Memphis,
         <!--<b>City:</b>-->
         <a href="http://" title="Memphis" name="Memphis" class="underline">Memphis</a>
      </p>
      <div class="clk"></div>
   </div>
</li>"""
pattern=r'<strong>(\w.+)<\/strong>|<b>Classification:<\/b>(\s.+)(\s.+)|(Born:.+)|(Died:.+\s.+\s.+\s.+)'
pattern_2=r'name=["](\w.+?)["]'


match=re.finditer(pattern,string_1,re.M)
for find in match:
    if find.group(1):
        print("Name {}".format(find.group(1)))
    if find.group(2):
        print("Classificiation first {}".format(re.search(pattern_2,str(find.group(2))).group(1)))
        print("Classification second {}".format(re.search(pattern_2,str(find.group(3))).group(1)))
    if find.group(4):
        print("Born {}".format(re.search(pattern_2, str(find.group(4))).group(1)))
    if find.group(5):
        print("Dead {}".format(re.search(pattern_2, str(find.group(5))).group(1)))

输出：

Name Mr. Elvis Presley
Classificiation first Actor 
Classification second Singer
Born Tupelo
Dead Memphis

我需要从html页面

1 个答案: