 class="p">,</span> <span class="n">nunique_thold</span><span class="o">=</span><span class="mi">2</span><span class="p">)</span><span class="o">.</span><span class="n">columns</span>
<span class="c1"># check that col3 is removed as it only has 50% unique values</span>
<span class="k">assert</span> <span class="s1">&#39;col3&#39;</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">drop_low_uniqueness_cols</span><span class="p">(</span><span class="n">df</span><span class="p">,</spa