an class="sd">&quot;&quot;&quot;</span>
<span class="sd">  Base class for classes that contain a ndarray value attribute. </span>

<span class="sd">  This class derives its name from the presence of an attribute named &quot;value&quot; that contains a Numpy ndarray. Methods relate to this attribute.</span>
<span class="sd">  &quot;&quot;&quot;</span>

  <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span><span class="n">name<