pan><span class="s1">&#39;</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">i</span><span class="o">+</span><span class="mi">1</span><span class="p">)</span> <span class="k">for</span> <span class="n">i</span> <span class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="n">nhbins</span><span class="p">)]</span>
      
    <span class="c1"># initializing the figure</span>
    <span class="n">cmap</span> <span class="o">=</span>