ss="p">,</span> <span class="n">E</span> <span class="o">=</span> <span
            class="bp">self</span><span class="o">.</span><span class="n">get_internal_structure</span><span class="p">()</span>
        <span class="n">fig</span><span class="p">,</span> <span class="n">ax</span> <span class="o">=</span> <span
            class="n">plt</span><span class="o">.</span><span class="n">subplots</span><span class="p">()</span>
        <span class="n">y_min</span> <span class="o">=</span> <span class="mi">0</