擅长:python、mysql、java
<p>您可能应该阅读文档中的以下两部分:</p>
<ul>
<li><a href="http://docs.python.org/reference/datamodel.html#emulating-container-types" rel="noreferrer">Emulating container types</a></li>
<li><a href="https://docs.python.org/2.7/reference/datamodel.html#additional-methods-for-emulation-of-sequence-types" rel="noreferrer">Additional methods for emulating sequence types</a>(仅限Python 2)</li>
</ul>
<p><strong>编辑:</strong>为了处理扩展切片,应该使<code>__getitem__</code>-方法处理切片对象(请参阅<a href="http://docs.python.org/reference/datamodel.html#the-standard-type-hierarchy" rel="noreferrer">here</a>,再往下一点)。</p>