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href="../index.html">Docs</a> »</li> <li><a href="index.html">Release Notes</a> »</li> <li>5.4.0</li> <li class="wy-breadcrumbs-aside"> <a href="../_sources/releasenotes/5.4.0.rst.txt" rel="nofollow"> View page source</a> </li> </ul> <hr/> </div> <div role="main" class="document" itemscope="itemscope" itemtype="http://schema.org/Article"> <div itemprop="articleBody"> <div class="section" id="id1"> <h1>5.4.0<a class="headerlink" href="#id1" title="Permalink to this headline">¶</a></h1> <div class="section" id="api-changes"> <h2>API Changes<a class="headerlink" href="#api-changes" title="Permalink to this headline">¶</a></h2> <div class="section" id="apng-extension-to-png-plugin"> <h3>APNG extension to PNG plugin<a class="headerlink" href="#apng-extension-to-png-plugin" title="Permalink to this headline">¶</a></h3> <p>Animated Portable Network Graphics (APNG) images are not fully supported but can be opened via the PNG plugin to get some basic info:</p> <div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">im</span> <span class="o">=</span> <span class="n">Image</span><span class="o">.</span><span class="n">open</span><span class="p">(</span><span class="s2">"image.apng"</span><span class="p">)</span> <span class="nb">print</span><span class="p">(</span><span class="n">im</span><span class="o">.</span><span class="n">mode</span><span class="p">)</span> <span class="c1"># "RGBA"</span> <span class="nb">print</span><span class="p">(</span><span class="n">im</span><span class="o">.</span><span class="n">size</span><span class="p">)</span> <span class="c1"># (245, 245)</span> <span class="n">im</span><span class="o">.</span><span class="n">show</span><span class="p">()</span> <span class="c1"># Shows a single frame</span> </pre></div> </div> </div> <div class="section" id="check-for-libjpeg-turbo"> <h3>Check for libjpeg-turbo<a class="headerlink" href="#check-for-libjpeg-turbo" title="Permalink to this headline">¶</a></h3> <p>You can check if Pillow has been built against the libjpeg-turbo version of the libjpeg library:</p> <div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="kn">from</span> <span class="nn">PIL</span> <span class="k">import</span> <span class="n">features</span> <span class="n">features</span><span class="o">.</span><span class="n">check_feature</span><span class="p">(</span><span class="s2">"libjpeg_turbo"</span><span class="p">)</span> <span class="c1"># True or False</span> </pre></div> </div> </div> <div class="section" id="negative-indexes-in-pixel-access"> <h3>Negative indexes in pixel access<a class="headerlink" href="#negative-indexes-in-pixel-access" title="Permalink to this headline">¶</a></h3> <p>When accessing individual image pixels, negative indexes are now also accepted. For example, to get or set the farthest pixel in the lower right of an image:</p> <div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">px</span> <span class="o">=</span> <span class="n">im</span><span class="o">.</span><span class="n">load</span><span class="p">()</span> <span class="nb">print</span><span class="p">(</span><span class="n">px</span><span class="p">[</span><span class="o">-</span><span class="mi">1</span><span class="p">,</span> <span class="o">-</span><span class="mi">1</span><span class="p">])</span> <span class="n">px</span><span class="p">[</span><span class="o">-</span><span class="mi">1</span><span class="p">,</span> <span class="o">-</span><span class="mi">1</span><span class="p">]</span> <span class="o">=</span> <span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="mi">0</span><span class="p">)</span> </pre></div> </div> </div> <div class="section" id="new-custom-tiff-tags"> <h3>New custom TIFF tags<a class="headerlink" href="#new-custom-tiff-tags" title="Permalink to this headline">¶</a></h3> <p>TIFF images can now be saved with custom integer, float and string TIFF tags:</p> <div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">im</span> <span class="o">=</span> <span class="n">Image</span><span class="o">.</span><span class="n">new</span><span class="p">(</span><span class="s2">"RGB"</span><span class="p">,</span> <span class="p">(</span><span class="mi">200</span><span class="p">,</span> <span class="mi">100</span><span class="p">))</span> <span class="n">custom</span> <span class="o">=</span> <span class="p">{</span> <span class="mi">37000</span><span class="p">:</span> <span class="mi">4</span><span class="p">,</span> <span class="mi">37001</span><span class="p">:</span> <span class="mf">4.2</span><span class="p">,</span> <span class="mi">37002</span><span class="p">:</span> <span class="s2">"custom tag value"</span><span class="p">,</span> <span class="mi">37003</span><span class="p">:</span> <span class="sa">u</span><span class="s2">"custom tag value"</span><span class="p">,</span> <span class="mi">37004</span><span class="p">:</span> <span class="sa">b</span><span class="s2">"custom tag value"</span><span class="p">,</span> <span class="p">}</span> <span class="n">im</span><span class="o">.</span><span class="n">save</span><span class="p">(</span><span class="s2">"output.tif"</span><span class="p">,</span> <span class="n">tiffinfo</span><span class="o">=</span><span class="n">custom</span><span class="p">)</span> <span class="n">im2</span> <span class="o">=</span> <span class="n">Image</span><span class="o">.</span><span class="n">open</span><span class="p">(</span><span class="s2">"output.tif"</span><span class="p">)</span> <span class="nb">print</span><span class="p">(</span><span class="n">im2</span><span class="o">.</span><span class="n">tag_v2</span><span class="p">[</span><span class="mi">37000</span><span class="p">])</span> <span class="c1"># 4</span> <span class="nb">print</span><span class="p">(</span><span class="n">im2</span><span class="o">.</span><span class="n">tag_v2</span><span class="p">[</span><span class="mi">37002</span><span class="p">])</span> <span class="c1"># "custom tag value"</span> <span class="nb">print</span><span class="p">(</span><span class="n">im2</span><span class="o">.</span><span class="n">tag_v2</span><span class="p">[</span><span class="mi">37004</span><span class="p">])</span> <span class="c1"># b"custom tag value"</span> </pre></div> </div> </div> </div> <div class="section" id="other-changes"> <h2>Other Changes<a class="headerlink" href="#other-changes" title="Permalink to this headline">¶</a></h2> <div class="section" id="imageops-fit"> <h3>ImageOps.fit<a class="headerlink" href="#imageops-fit" title="Permalink to this headline">¶</a></h3> <p>Now uses one resize operation with <code class="docutils literal notranslate"><span class="pre">box</span></code> parameter internally instead of a crop and scale operations sequence. This improves the performance and accuracy of cropping since the <code class="docutils literal notranslate"><span class="pre">box</span></code> parameter accepts float values.</p> </div> </div> </div> </div> </div> <footer> <div class="rst-footer-buttons" role="navigation" aria-label="footer navigation"> <a href="5.3.0.html" class="btn btn-neutral float-right" title="5.3.0" accesskey="n" rel="next">Next <span class="fa fa-arrow-circle-right"></span></a> <a href="5.4.1.html" class="btn btn-neutral float-left" title="5.4.1" accesskey="p" rel="prev"><span class="fa fa-arrow-circle-left"></span> Previous</a> </div> <hr/> <div role="contentinfo"> <p> © Copyright 1995-2011 Fredrik Lundh, 2010-2018 Alex Clark and Contributors </p> </div> Built with <a href="http://sphinx-doc.org/">Sphinx</a> using a <a href="https://github.com/rtfd/sphinx_rtd_theme">theme</a> provided by <a href="https://readthedocs.org">Read the Docs</a>. </footer> </div> </div> </section> </div> <script type="text/javascript"> jQuery(function () { SphinxRtdTheme.Navigation.enable(true); }); </script> </body> </html>