">assert</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">data</span><span class="p">,</span> <span class="n">Stock</span><span class="p">)</span></div></div>

<div class="viewcode-block" id="Test_portfolio_extractor"><a class="viewcode-back" href="../../../docs/source/time_series_transform.test.html#time_series_transform.test.test_stock_base.Test_portfolio_extractor">[docs]</a><span class="nd">@pytest</span><span class="o">.</span><span class="n">mark</span><span class="o">.