回答編集履歴
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実行結果を付与
test
CHANGED
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@@ -1,31 +1,93 @@
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next がclass="b"の間はclass="a"にappend
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> for e in doc.findall('.//div[@class="a"]'):
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```shell
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dockerdev@py3:~$ cat a
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#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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> if img.tag == 'img':
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> e.append(img)
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import lxml.html
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> break
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> n = n.getnext()
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html = """
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>
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<div class='a'><img src='aa.jpg'></div>
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>
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<div class='b'><img src='ab.jpg'></div>
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<div class='b'><img src='ac.jpg'></div>
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<div class='b'><img src='ad.jpg'></div>
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<div class='a'><img src='ba.jpg'></div>
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<div class='b'><img src='bb.jpg'></div>
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<div class='b'><img src='bc.jpg'></div>
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<div class='a'><img src='ca.jpg'></div>
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<div class='b'><img src='cb.jpg'></div>
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"""
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doc = lxml.html.fromstring(html)
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# next がclass="b"の間はclass="a"にappend
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for e in doc.findall('.//div[@class="a"]'):
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n = e.getnext()
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while True:
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if n != None and n.get('class') == 'b':
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for img in n:
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if img.tag == 'img':
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e.append(img)
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else:
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break
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n = n.getnext()
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# 不要なdivを一気に消す
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for e in doc.findall('.//div[@class="b"]'):
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parent = e.getparent()
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parent.remove(e)
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print(lxml.etree.tostring(doc, pretty_print=True).decode('utf8'))
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dockerdev@py3:~$ python3 a
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python3 a
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<div><div class="a"><img src="aa.jpg"/><img src="ab.jpg"/><img src="ac.jpg"/><img src="ad.jpg"/></div>
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<div class="a"><img src="ba.jpg"/><img src="bb.jpg"/><img src="bc.jpg"/></div>
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<div class="a"><img src="ca.jpg"/><img src="cb.jpg"/></div>
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</div>
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dockerdev@py3:~$
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```
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