m</a></span></em><span class="sig-paren">)</span> &#x2192; <a class="reference external" href="https://docs.python.org/3/library/constants.html#None" title="(in Python v3.9)">None</a><a class="headerlink" href="#dscribe.ext.ExtendedSystem" title="Permalink to this definition">¶</a></dt>
<dd><p>Bases: <code class="xref py py-class docutils literal notranslate"><span class="pre">pybind11_builtins.pybind11_object</span></code></p>
<dl class="py method">
<dt id="dscribe.ext.ExtendedSystem.atomic_numbers">
<em 