ot;</span><span class="p">)</span>
            <span class="bp">self</span><span class="o">.</span><span class="n">expected_values_</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">expval</span><span class="p">)</span>

        <span class="bp">self</span><span class="o">.</span><span class="n">df_</span> <span class="o">=</span> <span class="n">pd</span><span class="o">.</span><span class="n">DataFrame</span><span class="p">(</span>
            <span class=