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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
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<html xmlns="http://www.w3.org/1999/xhtml">
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    <title>Welcome to Jinja2 &mdash; Jinja2 2.7.3 documentation</title>
    
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  <div class="section" id="welcome-to-jinja2">
<h1>Welcome to Jinja2<a class="headerlink" href="#welcome-to-jinja2" title="Permalink to this headline"></a></h1>
<p>Jinja2 is a modern and designer-friendly templating language for Python,
modelled after Django&#8217;s templates.  It is fast, widely used and secure
with the optional sandboxed template execution environment:</p>
<div class="highlight-html+jinja"><div class="highlight"><pre><span class="nt">&lt;title&gt;</span><span class="cp">{%</span> <span class="k">block</span> <span class="nv">title</span> <span class="cp">%}{%</span> <span class="k">endblock</span> <span class="cp">%}</span><span class="nt">&lt;/title&gt;</span>
<span class="nt">&lt;ul&gt;</span>
<span class="cp">{%</span> <span class="k">for</span> <span class="nv">user</span> <span class="k">in</span> <span class="nv">users</span> <span class="cp">%}</span>
  <span class="nt">&lt;li&gt;&lt;a</span> <span class="na">href=</span><span class="s">&quot;</span><span class="cp">{{</span> <span class="nv">user.url</span> <span class="cp">}}</span><span class="s">&quot;</span><span class="nt">&gt;</span><span class="cp">{{</span> <span class="nv">user.username</span> <span class="cp">}}</span><span class="nt">&lt;/a&gt;&lt;/li&gt;</span>
<span class="cp">{%</span> <span class="k">endfor</span> <span class="cp">%}</span>
<span class="nt">&lt;/ul&gt;</span>
</pre></div>
</div>
<p><strong>Features:</strong></p>
<ul class="simple">
<li>sandboxed execution</li>
<li>powerful automatic HTML escaping system for XSS prevention</li>
<li>template inheritance</li>
<li>compiles down to the optimal python code just in time</li>
<li>optional ahead-of-time template compilation</li>
<li>easy to debug.  Line numbers of exceptions directly point to
the correct line in the template.</li>
<li>configurable syntax</li>
</ul>
<div class="section" id="jinja2-documentation">
<h2>Jinja2 Documentation<a class="headerlink" href="#jinja2-documentation" title="Permalink to this headline"></a></h2>
<div class="toctree-wrapper compound">
<ul>
<li class="toctree-l1"><a class="reference internal" href="intro.html">Introduction</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="intro.html#basic-api-usage">Basic API Usage</a></li>
<li class="toctree-l2"><a class="reference internal" href="intro.html#experimental-python-3-support">Experimental Python 3 Support</a></li>
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<li class="toctree-l2"><a class="reference internal" href="api.html#undefined-types">Undefined Types</a></li>
<li class="toctree-l2"><a class="reference internal" href="api.html#the-context">The Context</a></li>
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<li class="toctree-l1"><a class="reference internal" href="templates.html">Template Designer Documentation</a><ul>
<li class="toctree-l2"><a class="reference internal" href="templates.html#synopsis">Synopsis</a></li>
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<li class="toctree-l2"><a class="reference internal" href="templates.html#list-of-control-structures">List of Control Structures</a></li>
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<li class="toctree-l2"><a class="reference internal" href="templates.html#list-of-builtin-filters">List of Builtin Filters</a></li>
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<li class="toctree-l2"><a class="reference internal" href="templates.html#list-of-global-functions">List of Global Functions</a></li>
<li class="toctree-l2"><a class="reference internal" href="templates.html#extensions">Extensions</a></li>
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<li class="toctree-l2"><a class="reference internal" href="extensions.html#expression-statement">Expression Statement</a></li>
<li class="toctree-l2"><a class="reference internal" href="extensions.html#loop-controls">Loop Controls</a></li>
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<li class="toctree-l2"><a class="reference internal" href="extensions.html#module-jinja2.ext">Writing Extensions</a></li>
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<li class="toctree-l1"><a class="reference internal" href="integration.html">Integration</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="integration.html#textmate">TextMate</a></li>
<li class="toctree-l2"><a class="reference internal" href="integration.html#vim">Vim</a></li>
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<li class="toctree-l1"><a class="reference internal" href="switching.html">Switching from other Template Engines</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="switching.html#django">Django</a></li>
<li class="toctree-l2"><a class="reference internal" href="switching.html#mako">Mako</a></li>
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<li class="toctree-l1"><a class="reference internal" href="tricks.html">Tips and Tricks</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="tricks.html#alternating-rows">Alternating Rows</a></li>
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<li class="toctree-l2"><a class="reference internal" href="tricks.html#accessing-the-parent-loop">Accessing the parent Loop</a></li>
</ul>
</li>
</ul>
</div>
</div>
<div class="section" id="additional-information">
<h2>Additional Information<a class="headerlink" href="#additional-information" title="Permalink to this headline"></a></h2>
<div class="toctree-wrapper compound">
<ul>
<li class="toctree-l1"><a class="reference internal" href="faq.html">Frequently Asked Questions</a><ul>
<li class="toctree-l2"><a class="reference internal" href="faq.html#why-is-it-called-jinja">Why is it called Jinja?</a></li>
<li class="toctree-l2"><a class="reference internal" href="faq.html#how-fast-is-it">How fast is it?</a></li>
<li class="toctree-l2"><a class="reference internal" href="faq.html#how-compatible-is-jinja2-with-django">How Compatible is Jinja2 with Django?</a></li>
<li class="toctree-l2"><a class="reference internal" href="faq.html#isn-t-it-a-terrible-idea-to-put-logic-into-templates">Isn&#8217;t it a terrible idea to put Logic into Templates?</a></li>
<li class="toctree-l2"><a class="reference internal" href="faq.html#why-is-autoescaping-not-the-default">Why is Autoescaping not the Default?</a></li>
<li class="toctree-l2"><a class="reference internal" href="faq.html#why-is-the-context-immutable">Why is the Context immutable?</a></li>
<li class="toctree-l2"><a class="reference internal" href="faq.html#my-tracebacks-look-weird-what-s-happening">My tracebacks look weird.  What&#8217;s happening?</a></li>
<li class="toctree-l2"><a class="reference internal" href="faq.html#why-is-there-no-python-2-3-2-4-2-5-3-1-3-2-support">Why is there no Python 2.3/2.4/2.5/3.1/3.2 support?</a></li>
<li class="toctree-l2"><a class="reference internal" href="faq.html#my-macros-are-overridden-by-something">My Macros are overridden by something</a></li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="changelog.html">Jinja2 Changelog</a><ul>
<li class="toctree-l2"><a class="reference internal" href="changelog.html#version-2-8">Version 2.8</a></li>
<li class="toctree-l2"><a class="reference internal" href="changelog.html#version-2-7-3">Version 2.7.3</a></li>
<li class="toctree-l2"><a class="reference internal" href="changelog.html#version-2-7-2">Version 2.7.2</a></li>
<li class="toctree-l2"><a class="reference internal" href="changelog.html#version-2-7-1">Version 2.7.1</a></li>
<li class="toctree-l2"><a class="reference internal" href="changelog.html#version-2-7">Version 2.7</a></li>
<li class="toctree-l2"><a class="reference internal" href="changelog.html#version-2-6">Version 2.6</a></li>
<li class="toctree-l2"><a class="reference internal" href="changelog.html#version-2-5-5">Version 2.5.5</a></li>
<li class="toctree-l2"><a class="reference internal" href="changelog.html#version-2-5-4">Version 2.5.4</a></li>
<li class="toctree-l2"><a class="reference internal" href="changelog.html#version-2-5-3">Version 2.5.3</a></li>
<li class="toctree-l2"><a class="reference internal" href="changelog.html#version-2-5-2">Version 2.5.2</a></li>
<li class="toctree-l2"><a class="reference internal" href="changelog.html#version-2-5-1">Version 2.5.1</a></li>
<li class="toctree-l2"><a class="reference internal" href="changelog.html#version-2-5">Version 2.5</a></li>
<li class="toctree-l2"><a class="reference internal" href="changelog.html#version-2-4-1">Version 2.4.1</a></li>
<li class="toctree-l2"><a class="reference internal" href="changelog.html#version-2-4">Version 2.4</a></li>
<li class="toctree-l2"><a class="reference internal" href="changelog.html#version-2-3-1">Version 2.3.1</a></li>
<li class="toctree-l2"><a class="reference internal" href="changelog.html#version-2-3">Version 2.3</a></li>
<li class="toctree-l2"><a class="reference internal" href="changelog.html#version-2-2-1">Version 2.2.1</a></li>
<li class="toctree-l2"><a class="reference internal" href="changelog.html#version-2-2">Version 2.2</a></li>
<li class="toctree-l2"><a class="reference internal" href="changelog.html#version-2-1-1">Version 2.1.1</a></li>
<li class="toctree-l2"><a class="reference internal" href="changelog.html#version-2-1">Version 2.1</a></li>
<li class="toctree-l2"><a class="reference internal" href="changelog.html#version-2-0">Version 2.0</a></li>
<li class="toctree-l2"><a class="reference internal" href="changelog.html#version-2-0rc1">Version 2.0rc1</a></li>
</ul>
</li>
</ul>
</div>
<p>If you can&#8217;t find the information you&#8217;re looking for, have a look at the
index or try to find it using the search function:</p>
<ul class="simple">
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<li><a class="reference internal" href="search.html"><em>Search Page</em></a></li>
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  <img class="logo" src="_static/jinja-small.png" alt="Logo"/>
</a></p><h3>About Jinja2</h3>
<p>
  Jinja2 is a full featured template engine for Python. It has full unicode
  support, an optional integrated sandboxed execution environment, widely used
  and BSD licensed.
</p>
<h3>Other Formats</h3>
<p>
  You can download the documentation in other formats as well:
</p>
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  <li><a href="http://jinja.pocoo.org/docs/jinja-docs.zip">as zipped HTML</a>
</ul>
<h3>Useful Links</h3>
<ul>
  <li><a href="http://jinja.pocoo.org/">The Jinja2 Website</a></li>
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