">df</span><span class="o">.</span><span class="n">dtypes</span><span class="p">)</span><span class="o">.</span><span class="n">groups</span>
  <span class="n">s</span> <span class="o">=</span> <span class="p">{</span><span class="n">k</span><span class="o">.</span><span class="n">name</span><span class="p">:</span> <span class="n">v</span> <span class="k">for</span> <span class="n">k</span><span class="p">,</span> <span class="n">v</span> <span class="ow">in</span> <span class="n">g</span><span class="o">.