擅长:python、mysql、java
<pre><code>{k:{k1:v1 for k1,v1 in v.items() if k1.startswith('customer')} for k, v in clients.items()}
</code></pre>
<p>输出:</p>
<pre><code>{'Shop': {'customer': 'cumoster_v'}, 'Gym': {'customer_2': 'customer_v2', 'customer_1': 'customer_v1'}, 'Bank': {'customer_3': 'customer_v3'}}
</code></pre>