>=</span><span class="s1">&#39;case&#39;</span><span class="p">,</span>
<a id="__codelineno-5-7" name="__codelineno-5-7" href="#__codelineno-5-7"></a>    <span class="n">session_index_column</span><span class="o">=</span><span class="s1">&#39;case&#39;</span><span class="p">,</span>
<a id="__codelineno-5-8" name="__codelineno-5-8" href="#__codelineno-5-8"></a>    <span class="n">session_observable_columns</span><span class="o">=</span><span class="p">[</span><span class="s1">&#39;income&#39;</span><span cla