<span class="o">.</span><span class="n">n_steps</span> <span class="k">for</span> <span class="n">j</span> <span class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">n_steps</span><span class="p">)])</span>
        <span class="c1"># Initiate spectrum</span>
        <span class="n">spectrum</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">ones_like</span><span class="p">(<