ss="p">:</span>
    <span class="k">class</span> <span class="nc">ABCMeta</span><span class="p">(</span><span class="nb">type</span><span class="p">):</span>
        <span class="sd">&quot;&quot;&quot;Metaclass for defining Abstract Base Classes (ABCs).</span>

<span class="sd">        Use this metaclass to create an ABC.  An ABC can be subclassed</span>
<span class="sd">        directly, and then acts as a mix-in class.  You can also register</span>
<span class="sd">        unrelated concrete classes (even