></pre></div>
<h1 id="step-2-format-data-frame">Step 2: Format Data-Frame</h1>
<p>TODO: add why we need to do it (every package is doing it).</p>
<h2 id="python_2">Python</h2>
<p>Tell the <code>EasyDatasetWrapper</code> about observables</p>
<ol>
<li>price observable: cost, freq, ovt, ivt</li>
<li>session observables: income.</li>
</ol>
<div class="highlight"><pre><span></span><code><a id="__codelineno-5-1" name="__codelineno-5-1" href="#__codelineno-5-1"></a><span class="n">data</span> <span class="o">=</s