>
                    <span class="n">k</span> <span class="o">+=</span> <span class="mi">1</span>
            <span class="k">if</span> <span class="n">k</span> <span class="o">==</span> <span class="mi">0</span><span class="p">:</span>
                <span class="k">return</span> <span class="mi">0</span>
        <span class="k">return</span> <span class="mi">1</span>

    <span class="nd">@staticmethod</span>
    <span class="k">def</span> <span class="nf">_convert</span><span class="p">(</span><span cl