如何使用漂亮的汤从下面的html中提取两种表格类型的表格标题
<body>
<p>some other data 1</p>
<p>Table1 heading</p>
<div></div>
<div>
<div><table width="15%"><tbody>
<tr>
<td><p>data1_00</p></td>
<td><p>data1_01</p></td>
</tr>
<tr>
<td><p>data1_10</p></td>
<td><p>data1_11</p></td>
</tr>
</tbody></table></div>
</div>
<br><br>
<div>some other data 2</div>
<div>Table2 heading</div>
<div>
<div><table width="15%"><tbody>
<tr>
<td><p>data2_00</p></td>
<td><p>data2_01</p></td>
</tr>
<tr>
<td><p>data2_10</p></td>
<td><p>data2_11</p></td>
</tr>
</tbody></table></div>
</div>
</body>
在第一个表上,标题位于<p>
标记内,在第二个表上,标题位于<div>
标记内。同样在第二张桌子上,在桌子上方有一个空白的<div>
标签。
如何提取两个表标题?
当前,我正在使用<div>
搜索当前表上方的上一个table.find_previous('div')
,其中的文本将另存为标题。
from bs4 import BeautifulSoup
import urllib.request
htmlpage = urllib.request.urlopen(url)
page = BeautifulSoup(htmlpage, "html.parser")
all_divtables = page.find_all('table')
for table in all_divtables:
curr_div = table
while True:
curr_div = curr_div.find_previous('div')
if len(curr_div.find_all('table')) > 0:
continue
else:
heading = curr_div.text.strip()
print(heading)
break
所需输出:
Table1 heading
Table2 heading
答案 0 :(得分:3)
您可以将find_previous()
函数与lambda参数一起使用,该函数选择不包含其他表且不包含空字符串的第一个先前标记:
data = '''<body>
<p>some other data 1</p>
<p>Table1 heading</p>
<div></div>
<div>
<div><table width="15%"><tbody>
<tr>
<td><p>data1_00</p></td>
<td><p>data1_01</p></td>
</tr>
<tr>
<td><p>data1_10</p></td>
<td><p>data1_11</p></td>
</tr>
</tbody></table></div>
</div>
<br><br>
<div>some other data 2</div>
<div>Table2 heading</div>
<div>
<div><table width="15%"><tbody>
<tr>
<td><p>data2_00</p></td>
<td><p>data2_01</p></td>
</tr>
<tr>
<td><p>data2_10</p></td>
<td><p>data2_11</p></td>
</tr>
</tbody></table></div>
</div>
<div>some other data 3</div>
<div>Table3 heading</div>
<div>
<div><table width="15%"><tbody>
<tr>
<td><p>data2_00z</p></td>
<td><p>data2_01z</p></td>
</tr>
<tr>
<td><p>data2_10z</p></td>
<td><p>data2_11z</p></td>
</tr>
</tbody></table></div>
</div>
<div>
<div><table width="15%"><tbody>
<tr>
<td><p>data2_00x</p></td>
<td><p>data2_01x</p></td>
</tr>
<tr>
<td><p>data2_10x</p></td>
<td><p>data2_11x</p></td>
</tr>
</tbody></table></div>
</div>
</body>'''
from bs4 import BeautifulSoup
soup = BeautifulSoup(data, 'lxml')
for table in soup.select('table'):
for i in table.find_previous(lambda t: not t.find('table') and t.text.strip() != ''):
if i.find_parents('table'):
continue
print(i)
print('*' * 80)
打印:
Table1 heading
********************************************************************************
Table2 heading
********************************************************************************
Table3 heading
********************************************************************************
答案 1 :(得分:0)
urldata='''<body>
<p>some other data 1</p>
<p>Table1 heading</p>
<div></div>
<div>
<div><table width="15%"><tbody>
<tr>
<td><p>data1_00</p></td>
<td><p>data1_01</p></td>
</tr>
<tr>
<td><p>data1_10</p></td>
<td><p>data1_11</p></td>
</tr>
</tbody></table></div>
</div>
<br><br>
<div>some other data 2</div>
<div>Table2 heading</div>
<div>
<div><table width="15%"><tbody>
<tr>
<td><p>data2_00</p></td>
<td><p>data2_01</p></td>
</tr>
<tr>
<td><p>data2_10</p></td>
<td><p>data2_11</p></td>
</tr>
</tbody></table></div>
</div>
</body>'''
import re
from bs4 import BeautifulSoup
import urllib.request
soup = BeautifulSoup(data, 'lxml')
results =soup.body.findAll(text=re.compile('heading'))
for result in results:
print(result)
**Output:-**
Table1 heading
Table2 heading