="n">df</span><span class="o">.</span><span class="n">rename</span><span class="p">(</span><span class="n">columns</span><span class="o">=</span><span class="p">{</span><span class="s1">&#39;value&#39;</span><span class="p">:</span> <span class="s2">&quot;price&quot;</span><span class="p">})</span>
        <span class="n">universe_dict</span><span class="p">[</span><span class="n">df_name</span><span class="p">]</span> <span class="o">=</span> <span class="n">df</span>
    <span class="k">return</span> <spa