擅长:python、mysql、java
<p>使用<code>key</code>参数(并按照<a href="http://code.activestate.com/recipes/576653-convert-a-cmp-function-to-a-key-function/" rel="noreferrer">recipe</a>说明如何将旧的<code>cmp</code>函数转换为<code>key</code>函数)。</p>
<p><code>functools</code>具有在<a href="https://docs.python.org/3.6/library/functools.html#functools.cmp_to_key" rel="noreferrer">docs.python.org/3.6/library/functools.html#functools.cmp_to_key</a>提到的功能<code>cmp_to_key</code></p>