            <span class="nb">float</span><span class="p">(</span><span class="n">left</span><span class="p">),</span>
                                    <span class="nb">float</span><span class="p">(</span><span class="n">lower</span><span class="p">),</span>
                                    <span class="nb">float</span><span class="p">(</span><span class="n">right</span><span class="p">))</span>
    <span class="k">else</span><span class="p">:</span>
        <span class="k">raise</span> <span class="ne