>=</span> <span class="n">titanic</span><span class="p">[[</span><span class="s2">&quot;survived&quot;</span><span class="p">,</span> <span class="s2">&quot;pclass&quot;</span><span class="p">,</span> <span class="s2">&quot;sex&quot;</span><span class="p">,</span> <span class="s2">&quot;age&quot;</span><span class="p">,</span> <span class="s2">&quot;embark_town&quot;</span><span class="p">]]</span>
<span class="n">titanic</span> <span class="o">=</span> <span class="n">titanic</span><span class="o">.</span>