擅长:python、mysql、java
<p><a href="http://docs.python.org/library/stdtypes.html#set.intersection" rel="nofollow">sets</a>的<code>intersection</code>-和{<cd2>}-操作应该可以帮助您更优雅地解决问题。在</p>
<p>但由于您最初处理的是dicts,这些示例和讨论可能会提供一些启示:<a href="http://code.activestate.com/recipes/59875-finding-the-intersection-of-two-dicts" rel="nofollow">http://code.activestate.com/recipes/59875-finding-the-intersection-of-two-dicts</a></p>