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<div class="section" id="cgi">
<h1>CGI<a class="headerlink" href="#cgi" title="Permalink to this headline">¶</a></h1>
<p>If all other deployment methods do not work, CGI will work for sure.
CGI is supported by all major servers but usually has a sub-optimal
performance.</p>
<p>This is also the way you can use a Flask application on Google’s <a class="reference external" href="http://code.google.com/appengine/">App
Engine</a>, where execution happens in a CGI-like environment.</p>
<div class="admonition-watch-out admonition ">
<p class="first admonition-title">Watch Out</p>
<p class="last">Please make sure in advance that any <tt class="docutils literal"><span class="pre">app.run()</span></tt> calls you might
have in your application file are inside an <tt class="docutils literal"><span class="pre">if</span> <span class="pre">__name__</span> <span class="pre">==</span>
<span class="pre">'__main__':</span></tt> block or moved to a separate file. Just make sure it’s
not called because this will always start a local WSGI server which
we do not want if we deploy that application to CGI / app engine.</p>
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<div class="section" id="creating-a-cgi-file">
<h2>Creating a <cite>.cgi</cite> file<a class="headerlink" href="#creating-a-cgi-file" title="Permalink to this headline">¶</a></h2>
<p>First you need to create the CGI application file. Let’s call it
<cite>yourapplication.cgi</cite>:</p>
<div class="highlight-python"><div class="highlight"><pre><span class="c">#!/usr/bin/python</span>
<span class="kn">from</span> <span class="nn">wsgiref.handlers</span> <span class="kn">import</span> <span class="n">CGIHandler</span>
<span class="kn">from</span> <span class="nn">yourapplication</span> <span class="kn">import</span> <span class="n">app</span>
<span class="n">CGIHandler</span><span class="p">()</span><span class="o">.</span><span class="n">run</span><span class="p">(</span><span class="n">app</span><span class="p">)</span>
</pre></div>
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<h2>Server Setup<a class="headerlink" href="#server-setup" title="Permalink to this headline">¶</a></h2>
<p>Usually there are two ways to configure the server. Either just copy the
<cite>.cgi</cite> into a <cite>cgi-bin</cite> (and use <cite>mod_rewrite</cite> or something similar to
rewrite the URL) or let the server point to the file directly.</p>
<p>In Apache for example you can put a like like this into the config:</p>
<div class="highlight-apache"><div class="highlight"><pre><span class="nb">ScriptAlias</span> <span class="sx">/app</span> <span class="sx">/path/to/the/application.cgi</span>
</pre></div>
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<p>For more information consult the documentation of your webserver.</p>
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<h3><a href="../index.html">Table Of Contents</a></h3>
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<li><a class="reference internal" href="#">CGI</a><ul>
<li><a class="reference internal" href="#creating-a-cgi-file">Creating a <cite>.cgi</cite> file</a></li>
<li><a class="reference internal" href="#server-setup">Server Setup</a></li>
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