擅长:python、mysql、java
<pre><code>for key in d1:
if key in wanted_keys:
d2[key] = d1[key]
</code></pre>
<p><strong>更新</strong></p>
<p>我最近发现有一种更干净的方法来理解</p>
<pre><code>wanted_keys = set(['this_key', 'that_key'])
new_dict = {k: d1[k] for k in d1.keys() & wanted_keys}
</code></pre>