pan class="p">,</span> <span class="n">progressive_scaling</span><span class="p">,</span> <span class="n">num_scales</span><span class="o">=</span><span class="mi">4</span><span class="p">):</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">num_scales</span> <span class="o">=</span> <span class="n">num_scales</span>
        <span class="c1"># Use it only if bigger than zero (make a list)</span>
        <span class="k">if</span> <span class="n">progressive_scaling</span> <spa