ass="c1"># Shift second atom&#39;s x position</span>
        <span class="n">system</span><span class="o">.</span><span class="n">atoms</span><span class="o">.</span><span class="n">pos</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">array</span><span class="p">([</span><span class="mf">0.1</span> <span class="o">+</span> <span class="n">r_values</span><span class="p">[</span><span class