擅长:python、mysql、java
<p>你可以试试</p>
<pre><code>new_dc = []
for i in dc:
base_obj = {'index': i[0]['index'], 'lang': []}
for y in i:
base_obj['lang'].append(y['lang'])
base_obj['lang'] = ", ".join(base_obj['lang'])
new_dc.append([base_obj])
</code></pre>
<p>这将产生</p>
<pre><code>[[{'index': 20140, 'lang': 'tag4, tag, tag2'}],
[{'index': 20416, 'lang': 'tag3, tag2, tag3'}],
[{'index': 20594, 'lang': 'tag, tag4, tag5'}]]
</code></pre>