n>

        <span class="c1"># Draw the vertices</span>
        <span class="n">drawer_method</span> <span class="o">=</span> <span class="n">vertex_drawer</span><span class="o">.</span><span class="n">draw</span>
        <span class="k">for</span> <span class="n">vertex</span><span class="p">,</span> <span class="n">visual_vertex</span><span class="p">,</span> <span class="n">coords</span> <span class="ow">in</span> <span class="n">vertex_coord_iter</span><span class="p">:</span>
            <span class="n