s="nn">iDEA.system</span>
<span class="kn">import</span> <span class="nn">iDEA.state</span>
<span class="kn">import</span> <span class="nn">iDEA.observables</span>
<span class="kn">import</span> <span class="nn">iDEA.methods.non_interacting</span>
<span class="kn">import</span> <span class="nn">iDEA.methods.hartree</span>


<span class="n">name</span> <span class="o">=</span> <span class="s2">&quot;lda&quot;</span>


<span class="n">kinetic_energy_operator</span> <span class="o">=</span> <span class="n">iDE