n> <span class="s1">&#39;/&#39;</span> <span class="ow">in</span> <span class="n">step</span><span class="p">:</span>
        <span class="n">steps</span> <span class="o">=</span> <span class="n">step</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="s1">&#39;/&#39;</span><span class="p">)</span>
        <span class="k">if</span> <span class="s1">&#39;to&#39;</span> <span class="ow">in</span> <span class="n">step</span><span class="o">.</span><span class="n">lowe