ass="w"> </span><span class="n"><span class="pre">str</span></span></em><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">&#x2192;</span> <span class="sig-return-typehint"><span class="pre">Tuple</span><span class="p"><span class="pre">[</span></span><span class="pre">pandas.DataFrame</span><span class="p"><span class="pre">,</span></span><span class="w"> </span><span class="pre">pandas.Series</span><span class="p"><span class="pre">]</span></span></span></span><a class