/span>
        <span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="fm">__init__</span><span class="p">(</span><span class="n">callable</span><span class="p">)</span>


<span class="k">class</span> <span class="nc">abstractproperty</span><span class="p">(</span><span class="nb">property</span><span class="p">):</span>
    <span class="sd">&quot;&quot;&quot;A decorator indicating abstract properties.</span>

<span class="sd">    Requires that the metaclass is ABCMeta or 