/span> <span class="nb">str</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">species</span><span class="p">[</span><span class="n">neighbor</span><span class="p">])</span> <span class="o">==</span> <span class="s2">&quot;C&quot;</span> \
                        <span class="ow">and</span> <span class="nb">int</span><span class="p">(</span><span class="n">attributes</span><span class="p">[</span><span class="mi">0</span><span class="p">][</span><span class="s2