pan> <span class="n">EasyDatasetWrapper</span><span class="p">(</span>
<a id="__codelineno-5-2" name="__codelineno-5-2" href="#__codelineno-5-2"></a>    <span class="n">main_data</span><span class="o">=</span><span class="n">df</span><span class="p">,</span>
<a id="__codelineno-5-3" name="__codelineno-5-3" href="#__codelineno-5-3"></a>    <span class="n">purchase_record_column</span><span class="o">=</span><span class="s1">&#39;case&#39;</span><span class="p">,</span>
<a id="__codelineno-5-4" name="__codeli