擅长:python、mysql、java
<pre><code>result = {
item['b_id']: [
subitem['a_id']
for subitem in response
if subitem['b_id'] == item['b_id']
]
for item in response
}
print(result)
>>> {'9ec34be3d535': ['23857', '84596'], '0d687c94c5f4': ['12345', '67890'], None: ['d82ebe9815cc']}
</code></pre>