tein_keys</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
            <span class="n">protein_keys</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">protein_keys</span>
        <span class="n">proteins_to_shapemer_indices</span><span class="p">,</span> <span class="n">shapemer_keys</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">map_protein_to_shapemer_indices</span><s