擅长:python、mysql、java
<p>希望这能奏效:
单行代码</p>
<p>代码:</p>
<pre><code>op_dict={}
[op_dict.setdefault(x.split('.')[0], []).append(y) for x in b for y in a if x.split('.')[1] in y]
</code></pre>
<p>输出:
<a href="https://i.stack.imgur.com/cCy2G.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/cCy2G.png" alt="Output lookslike"/></a></p>