span class="nb">len</span><span class="p">(</span><span class="n">df</span><span class="o">.</span><span class="n">index</span><span class="p">)</span> <span class="o">-</span> <span class="mi">1</span><span class="p">,</span> <span class="mi">1000</span><span class="p">))</span><span class="o">.</span><span class="n">astype</span><span class="p">(</span><span class="n">np</span><span class="o">.</span><span class="n">int64</span><span class="p">)</span>
    <span class="c1">#new_ind = df.index[index]</span