an class="p">):</span>
<span class="w">        </span><span class="sd">&quot;&quot;&quot;Return the derivatives for the given system.</span>
<span class="sd">        Args:</span>
<span class="sd">            system (:class:`ase.Atoms`): Atomic structure.</span>
<span class="sd">            centers (list): Centers where to calculate SOAP. Can be</span>
<span class="sd">                provided as cartesian positions or atomic indices. If no</span>
<span class="sd">                centers are defined, the SOA