ass="kn">from</span> <span class="nn">subprocess</span> <span class="kn">import</span> <span class="n">DEVNULL</span><span class="p">,</span> <span class="n">STDOUT</span><span class="p">,</span> <span class="n">call</span>
<span class="kn">import</span> <span class="nn">subprocess</span>
<span class="kn">import</span> <span class="nn">os</span>
<span class="kn">import</span> <span class="nn">numpy</span> <span class="k">as</span> <span class="nn">np</span>
<span class="sd">&quot;&quot;&quot;</span>
<span c