lassic_control</span> <span class="kn">import</span> <span class="n">rendering</span>

            <span class="bp">self</span><span class="o">.</span><span class="n">viewer</span> <span class="o">=</span> <span class="n">rendering</span><span class="o">.</span><span class="n">SimpleImageViewer</span><span class="p">()</span>
        <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">viewer</span></div>
</div>



<div class="viewcode-block" id="shareworker">
<a