import</span> <span class="n">load_material</span><span class="p">,</span> <span class="n">interpolate_material</span><span class="p">,</span> <span class="n">load_material_RF</span>
<span class="kn">from</span> <span class="nn">layerlumos.layerlumos</span> <span class="kn">import</span> <span class="n">stackrt</span><span class="p">,</span> <span class="n">stackrt0</span>
<span class="kn">import</span> <span class="nn">matplotlib.pyplot</span> <span class="k">as</span> <span class="nn">plt</span>
<span cla