<span class="p">,</span> <span class="p">(</span><span class="n">res_i</span><span class="p">,</span> <span class="n">res_j</span><span class="p">)</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="nb">zip</span><span class="p">(</span><span class="n">seq_i</span><span class="p">,</span> <span class="n">seq_j</span><span class="p">)):</span>
        <span class="c1"># Do we match two residues, or residue and a gap?</span>
        <span class="c1"># if ma