home-assistant.github.io/developers/development_environment/index.html
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Set Up Development Environment
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<p>Youll need to set up a development environment if you want to develop a new feature or component for Home Assistant. Read on to learn how to set up.</p>
<ul>
<li>
<p>Visit the <a href="https://github.com/home-assistant/home-assistant">Home Assistant repository</a> and click <strong>Fork</strong>.</p>
</li>
<li>
<p>Consider setting up a virtual environment using <a href="https://docs.python.org/3.4/library/venv.html"><code class="highlighter-rouge">venv</code></a> before running the setup script.</p>
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<div class="language-bash highlighter-rouge"><pre class="highlight"><code><span class="gp">$ </span>git clone https://github.com/YOUR_GIT_USERNAME/home-assistant.git
<span class="gp">$ </span><span class="nb">cd </span>home-assistant
<span class="gp">$ </span>git remote add upstream https://github.com/home-assistant/home-assistant.git
<span class="gp">$ </span>script/setup
</code></pre>
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<li>
<p>On Windows, you can use <code class="highlighter-rouge">python setup.py develop</code> instead of the setup script.</p>
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<li>
<p>Run <code class="highlighter-rouge">hass</code> to invoke your local installation.</p>
</li>
</ul>
<h3><a class="title-link" name="logging" href="#logging"></a> Logging</h3>
<p>By default logging in home-assistant is tuned for operating in
production (set to INFO by default, with some modules set to even less
verbose logging levels).</p>
<p>You can use the <a href="/components/logger/">logger</a> component to adjust
logging to DEBUG to see even more details about what is going on.</p>
<h3><a class="title-link" name="developing-on-windows" href="#developing-on-windows"></a> Developing on Windows</h3>
<p>If you are using Windows as a development platform, make sure that you have the correct Microsoft Visual C++ build tools installed. Check the <a href="https://wiki.python.org/moin/WindowsCompilers">Windows Compilers</a> section on the <a href="https://www.python.org/">Python website</a> for details. Validation using <code class="highlighter-rouge">tox</code> will fail if this is not done correctly.</p>
<p>Also, make sure to install or upgrade the <code class="highlighter-rouge">setuptools</code> Python package. It contains compatibility improvements and adds automatic use of compilers:</p>
<div class="language-bash highlighter-rouge"><pre class="highlight"><code><span class="gp">$ </span>pip install --upgrade setuptools
</code></pre>
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<h1 class="title delta">Development Guide</h1>
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<a href='/developers/'>Introduction </a>
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<li><a href='/developers/architecture/'>Architecture </a></li>
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<a href='/developers/development/'>Starting with Development </a>
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<li><a class='active' href='/developers/development_environment/'>Setting up Environment </a></li>
<li><a href='/developers/development_submitting/'>Submit your Work </a></li>
<li><a href='/developers/development_checklist/'>Checklist </a></li>
<li><a href='/developers/development_testing/'>Testing </a></li>
<li><a href='/developers/development_catching_up/'>Catching up with Reality </a></li>
<li><a href='/developers/development_validation/'>Validation </a></li>
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<a href='/developers/add_new_platform/'>Support a new device (as a platform) </a>
<ul>
<li><a href='/developers/platform_example_sensor/'>Example sensor platform </a></li>
<li><a href='/developers/platform_example_light/'>Example light platform </a></li>
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<a href='/developers/creating_components/'>Adding a new component </a>
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<li><a href='/developers/component_loading/'>Loading components </a></li>
<li><a href='/developers/component_deps_and_reqs/'>Requirements & Dependencies </a></li>
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<a href='/developers/frontend/'>Frontend Development </a>
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<li><a href='/developers/frontend_add_card/'>Add State Card </a></li>
<li><a href='/developers/frontend_add_more_info/'>Add More Info Dialog </a></li>
<li><a href='/developers/frontend_creating_custom_panels/'>Add Custom Panels </a></li>
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API
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<li><a href='https://dev-docs.home-assistant.io/en/dev/'>Home Assistant API </a></li>
<li><a href='/developers/rest_api/'>RESTful API </a></li>
<li><a href='/developers/python_api/'>Python API </a></li>
<li><a href='/developers/server_sent_events/'>Server-sent events </a></li>
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<li><a href='/developers/helpers/'>Online helpers </a></li>
<li><a href='/developers/multiple_instances/'>Multiple Instances </a></li>
<li><a href='/developers/website/'>Home-Assistant.io </a></li>
<li><a href='/developers/credits/'>Credits </a></li>
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