 class="n">step</span> <span class="o">=</span> <span class="p">(</span><span class="n">match_dis</span><span class="p">[</span><span class="o">-</span><span class="mi">1</span><span class="p">]</span> <span class="o">-</span> <span class="n">match_dis</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span> <span class="o">/</span> <span class="mi">100</span>
    <span class="n">thresholds</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="