span><span class="s1">&#39;tight&#39;</span><span class="p">)</span> <span class="c1"># .png, .pdf, .jpg</span>
<span class="n">plt</span><span class="o">.</span><span class="n">savefig</span><span class="p">(</span><span class="s1">&#39;volcano.png&#39;</span><span class="p">,</span> <span class="n">dpi</span><span class="o">=</span><span class="mi">300</span><span class="p">)</span> <span class="c1"># .png, .pdf, .jpg</span>
<span class="n">plt</span><span class="o">.</span><span class="n">savefig</span><