pan class="p">)</span>

        <span class="k">def</span> <span class="nf">_abc_caches_clear</span><span class="p">(</span><span class="bp">cls</span><span class="p">):</span>
            <span class="sd">&quot;&quot;&quot;Clear the caches (for debugging or testing).&quot;&quot;&quot;</span>
            <span class="n">_reset_caches</span><span class="p">(</span><span class="bp">cls</span><span class="p">)</span>


<span class="k">class</span> <span class="nc">ABC</span><span class="p">(</span><span class=