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<li class="toctree-l1"><a class="reference internal" href="../../../environments/third_party_environments/#third-party-environments-using-gym">Third-Party Environments using Gym</a></li>
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<li class="toctree-l1 current has-children"><a class="reference internal" href="../">Gymnasium Basics</a><input checked="" class="toctree-checkbox" id="toctree-checkbox-9" name="toctree-checkbox-9" role="switch" type="checkbox"/><label for="toctree-checkbox-9"><div class="visually-hidden">Toggle child pages in navigation</div><i class="icon"><svg><use href="#svg-arrow-right"></use></svg></i></label><ul class="current">
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<li class="toctree-l2 current current-page"><a class="current reference internal" href="#">Implementing Custom Wrappers</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../environment_creation/">Make your own custom environment</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../vector_envs_tutorial/">Training A2C with Vector Envs and Domain Randomization</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../../training_agents/blackjack_tutorial/">Solving Blackjack with Q-Learning</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../../training_agents/FrozenLake_tuto/">Frozenlake benchmark</a></li>
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<li class="toctree-l1"><a class="reference external" href="https://www.comet.com/docs/v2/integrations/ml-frameworks/gymnasium/?utm_source=gymnasium&utm_medium=partner&utm_campaign=partner_gymnasium_2023&utm_content=docs_gymnasium">Comet Tutorial</a></li>
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<section class="sphx-glr-example-title" id="implementing-custom-wrappers">
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<span id="sphx-glr-tutorials-gymnasium-basics-implementing-custom-wrappers-py"></span><h1>Implementing Custom Wrappers<a class="headerlink" href="#implementing-custom-wrappers" title="Permalink to this heading">#</a></h1>
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<p>In this tutorial we will describe how to implement your own custom wrappers.
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Wrappers are a great way to add functionality to your environments in a modular way.
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This will save you a lot of boilerplate code.</p>
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<p>We will show how to create a wrapper by</p>
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<ul class="simple">
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||
<li><p>Inheriting from <a class="reference internal" href="../../../api/wrappers/observation_wrappers/#gymnasium.ObservationWrapper" title="gymnasium.ObservationWrapper"><code class="xref py py-class docutils literal notranslate"><span class="pre">gymnasium.ObservationWrapper</span></code></a></p></li>
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<li><p>Inheriting from <a class="reference internal" href="../../../api/wrappers/action_wrappers/#gymnasium.ActionWrapper" title="gymnasium.ActionWrapper"><code class="xref py py-class docutils literal notranslate"><span class="pre">gymnasium.ActionWrapper</span></code></a></p></li>
|
||
<li><p>Inheriting from <a class="reference internal" href="../../../api/wrappers/reward_wrappers/#gymnasium.RewardWrapper" title="gymnasium.RewardWrapper"><code class="xref py py-class docutils literal notranslate"><span class="pre">gymnasium.RewardWrapper</span></code></a></p></li>
|
||
<li><p>Inheriting from <a class="reference internal" href="../../../api/wrappers/#gymnasium.Wrapper" title="gymnasium.Wrapper"><code class="xref py py-class docutils literal notranslate"><span class="pre">gymnasium.Wrapper</span></code></a></p></li>
|
||
</ul>
|
||
<p>Before following this tutorial, make sure to check out the docs of the <a class="reference internal" href="../../../api/wrappers/#module-gymnasium.wrappers" title="gymnasium.wrappers"><code class="xref py py-mod docutils literal notranslate"><span class="pre">gymnasium.wrappers</span></code></a> module.</p>
|
||
<section id="inheriting-from-gymnasium-observationwrapper">
|
||
<h2>Inheriting from <a class="reference internal" href="../../../api/wrappers/observation_wrappers/#gymnasium.ObservationWrapper" title="gymnasium.ObservationWrapper"><code class="xref py py-class docutils literal notranslate"><span class="pre">gymnasium.ObservationWrapper</span></code></a><a class="headerlink" href="#inheriting-from-gymnasium-observationwrapper" title="Permalink to this heading">#</a></h2>
|
||
<p>Observation wrappers are useful if you want to apply some function to the observations that are returned
|
||
by an environment. If you implement an observation wrapper, you only need to define this transformation
|
||
by implementing the <a class="reference internal" href="../../../api/wrappers/observation_wrappers/#gymnasium.ObservationWrapper.observation" title="gymnasium.ObservationWrapper.observation"><code class="xref py py-meth docutils literal notranslate"><span class="pre">gymnasium.ObservationWrapper.observation()</span></code></a> method. Moreover, you should remember to
|
||
update the observation space, if the transformation changes the shape of observations (e.g. by transforming
|
||
dictionaries into numpy arrays, as in the following example).</p>
|
||
<p>Imagine you have a 2D navigation task where the environment returns dictionaries as observations with
|
||
keys <code class="docutils literal notranslate"><span class="pre">"agent_position"</span></code> and <code class="docutils literal notranslate"><span class="pre">"target_position"</span></code>. A common thing to do might be to throw away some degrees of
|
||
freedom and only consider the position of the target relative to the agent, i.e.
|
||
<code class="docutils literal notranslate"><span class="pre">observation["target_position"]</span> <span class="pre">-</span> <span class="pre">observation["agent_position"]</span></code>. For this, you could implement an
|
||
observation wrapper like this:</p>
|
||
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="kn">import</span> <span class="nn">numpy</span> <span class="k">as</span> <span class="nn">np</span>
|
||
<span class="kn">from</span> <span class="nn">gym</span> <span class="kn">import</span> <span class="n">ActionWrapper</span><span class="p">,</span> <span class="n">ObservationWrapper</span><span class="p">,</span> <span class="n">RewardWrapper</span><span class="p">,</span> <span class="n">Wrapper</span>
|
||
|
||
<span class="kn">import</span> <span class="nn">gymnasium</span> <span class="k">as</span> <span class="nn">gym</span>
|
||
<span class="kn">from</span> <span class="nn">gymnasium.spaces</span> <span class="kn">import</span> <span class="n">Box</span><span class="p">,</span> <span class="n">Discrete</span>
|
||
|
||
|
||
<span class="k">class</span> <span class="nc">RelativePosition</span><span class="p">(</span><span class="n">ObservationWrapper</span><span class="p">):</span>
|
||
<span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">env</span><span class="p">):</span>
|
||
<span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="fm">__init__</span><span class="p">(</span><span class="n">env</span><span class="p">)</span>
|
||
<span class="bp">self</span><span class="o">.</span><span class="n">observation_space</span> <span class="o">=</span> <span class="n">Box</span><span class="p">(</span><span class="n">shape</span><span class="o">=</span><span class="p">(</span><span class="mi">2</span><span class="p">,),</span> <span class="n">low</span><span class="o">=-</span><span class="n">np</span><span class="o">.</span><span class="n">inf</span><span class="p">,</span> <span class="n">high</span><span class="o">=</span><span class="n">np</span><span class="o">.</span><span class="n">inf</span><span class="p">)</span>
|
||
|
||
<span class="k">def</span> <span class="nf">observation</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">obs</span><span class="p">):</span>
|
||
<span class="k">return</span> <span class="n">obs</span><span class="p">[</span><span class="s2">"target"</span><span class="p">]</span> <span class="o">-</span> <span class="n">obs</span><span class="p">[</span><span class="s2">"agent"</span><span class="p">]</span>
|
||
</pre></div>
|
||
</div>
|
||
</section>
|
||
<section id="inheriting-from-gymnasium-actionwrapper">
|
||
<h2>Inheriting from <a class="reference internal" href="../../../api/wrappers/action_wrappers/#gymnasium.ActionWrapper" title="gymnasium.ActionWrapper"><code class="xref py py-class docutils literal notranslate"><span class="pre">gymnasium.ActionWrapper</span></code></a><a class="headerlink" href="#inheriting-from-gymnasium-actionwrapper" title="Permalink to this heading">#</a></h2>
|
||
<p>Action wrappers can be used to apply a transformation to actions before applying them to the environment.
|
||
If you implement an action wrapper, you need to define that transformation by implementing
|
||
<a class="reference internal" href="../../../api/wrappers/action_wrappers/#gymnasium.ActionWrapper.action" title="gymnasium.ActionWrapper.action"><code class="xref py py-meth docutils literal notranslate"><span class="pre">gymnasium.ActionWrapper.action()</span></code></a>. Moreover, you should specify the domain of that transformation
|
||
by updating the action space of the wrapper.</p>
|
||
<p>Let’s say you have an environment with action space of type <a class="reference internal" href="../../../api/spaces/fundamental/#gymnasium.spaces.Box" title="gymnasium.spaces.Box"><code class="xref py py-class docutils literal notranslate"><span class="pre">gymnasium.spaces.Box</span></code></a>, but you would only like
|
||
to use a finite subset of actions. Then, you might want to implement the following wrapper:</p>
|
||
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="k">class</span> <span class="nc">DiscreteActions</span><span class="p">(</span><span class="n">ActionWrapper</span><span class="p">):</span>
|
||
<span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">env</span><span class="p">,</span> <span class="n">disc_to_cont</span><span class="p">):</span>
|
||
<span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="fm">__init__</span><span class="p">(</span><span class="n">env</span><span class="p">)</span>
|
||
<span class="bp">self</span><span class="o">.</span><span class="n">disc_to_cont</span> <span class="o">=</span> <span class="n">disc_to_cont</span>
|
||
<span class="bp">self</span><span class="o">.</span><span class="n">action_space</span> <span class="o">=</span> <span class="n">Discrete</span><span class="p">(</span><span class="nb">len</span><span class="p">(</span><span class="n">disc_to_cont</span><span class="p">))</span>
|
||
|
||
<span class="k">def</span> <span class="nf">action</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">act</span><span class="p">):</span>
|
||
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">disc_to_cont</span><span class="p">[</span><span class="n">act</span><span class="p">]</span>
|
||
|
||
|
||
<span class="k">if</span> <span class="vm">__name__</span> <span class="o">==</span> <span class="s2">"__main__"</span><span class="p">:</span>
|
||
<span class="n">env</span> <span class="o">=</span> <span class="n">gym</span><span class="o">.</span><span class="n">make</span><span class="p">(</span><span class="s2">"LunarLanderContinuous-v2"</span><span class="p">)</span>
|
||
<span class="n">wrapped_env</span> <span class="o">=</span> <span class="n">DiscreteActions</span><span class="p">(</span>
|
||
<span class="n">env</span><span class="p">,</span> <span class="p">[</span><span class="n">np</span><span class="o">.</span><span class="n">array</span><span class="p">([</span><span class="mi">1</span><span class="p">,</span> <span class="mi">0</span><span class="p">]),</span> <span class="n">np</span><span class="o">.</span><span class="n">array</span><span class="p">([</span><span class="o">-</span><span class="mi">1</span><span class="p">,</span> <span class="mi">0</span><span class="p">]),</span> <span class="n">np</span><span class="o">.</span><span class="n">array</span><span class="p">([</span><span class="mi">0</span><span class="p">,</span> <span class="mi">1</span><span class="p">]),</span> <span class="n">np</span><span class="o">.</span><span class="n">array</span><span class="p">([</span><span class="mi">0</span><span class="p">,</span> <span class="o">-</span><span class="mi">1</span><span class="p">])]</span>
|
||
<span class="p">)</span>
|
||
<span class="nb">print</span><span class="p">(</span><span class="n">wrapped_env</span><span class="o">.</span><span class="n">action_space</span><span class="p">)</span> <span class="c1"># Discrete(4)</span>
|
||
</pre></div>
|
||
</div>
|
||
</section>
|
||
<section id="inheriting-from-gymnasium-rewardwrapper">
|
||
<h2>Inheriting from <a class="reference internal" href="../../../api/wrappers/reward_wrappers/#gymnasium.RewardWrapper" title="gymnasium.RewardWrapper"><code class="xref py py-class docutils literal notranslate"><span class="pre">gymnasium.RewardWrapper</span></code></a><a class="headerlink" href="#inheriting-from-gymnasium-rewardwrapper" title="Permalink to this heading">#</a></h2>
|
||
<p>Reward wrappers are used to transform the reward that is returned by an environment.
|
||
As for the previous wrappers, you need to specify that transformation by implementing the
|
||
<a class="reference internal" href="../../../api/wrappers/reward_wrappers/#gymnasium.RewardWrapper.reward" title="gymnasium.RewardWrapper.reward"><code class="xref py py-meth docutils literal notranslate"><span class="pre">gymnasium.RewardWrapper.reward()</span></code></a> method. Also, you might want to update the reward range of the wrapper.</p>
|
||
<p>Let us look at an example: Sometimes (especially when we do not have control over the reward
|
||
because it is intrinsic), we want to clip the reward to a range to gain some numerical stability.
|
||
To do that, we could, for instance, implement the following wrapper:</p>
|
||
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="kn">from</span> <span class="nn">typing</span> <span class="kn">import</span> <span class="n">SupportsFloat</span>
|
||
|
||
|
||
<span class="k">class</span> <span class="nc">ClipReward</span><span class="p">(</span><span class="n">RewardWrapper</span><span class="p">):</span>
|
||
<span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">env</span><span class="p">,</span> <span class="n">min_reward</span><span class="p">,</span> <span class="n">max_reward</span><span class="p">):</span>
|
||
<span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="fm">__init__</span><span class="p">(</span><span class="n">env</span><span class="p">)</span>
|
||
<span class="bp">self</span><span class="o">.</span><span class="n">min_reward</span> <span class="o">=</span> <span class="n">min_reward</span>
|
||
<span class="bp">self</span><span class="o">.</span><span class="n">max_reward</span> <span class="o">=</span> <span class="n">max_reward</span>
|
||
<span class="bp">self</span><span class="o">.</span><span class="n">reward_range</span> <span class="o">=</span> <span class="p">(</span><span class="n">min_reward</span><span class="p">,</span> <span class="n">max_reward</span><span class="p">)</span>
|
||
|
||
<span class="k">def</span> <span class="nf">reward</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">r</span><span class="p">:</span> <span class="n">SupportsFloat</span><span class="p">)</span> <span class="o">-></span> <span class="n">SupportsFloat</span><span class="p">:</span>
|
||
<span class="k">return</span> <span class="n">np</span><span class="o">.</span><span class="n">clip</span><span class="p">(</span><span class="n">r</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">min_reward</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">max_reward</span><span class="p">)</span>
|
||
</pre></div>
|
||
</div>
|
||
</section>
|
||
<section id="inheriting-from-gymnasium-wrapper">
|
||
<h2>Inheriting from <a class="reference internal" href="../../../api/wrappers/#gymnasium.Wrapper" title="gymnasium.Wrapper"><code class="xref py py-class docutils literal notranslate"><span class="pre">gymnasium.Wrapper</span></code></a><a class="headerlink" href="#inheriting-from-gymnasium-wrapper" title="Permalink to this heading">#</a></h2>
|
||
<p>Sometimes you might need to implement a wrapper that does some more complicated modifications (e.g. modify the
|
||
reward based on data in <code class="docutils literal notranslate"><span class="pre">info</span></code> or change the rendering behavior).
|
||
Such wrappers can be implemented by inheriting from <a class="reference internal" href="../../../api/wrappers/#gymnasium.Wrapper" title="gymnasium.Wrapper"><code class="xref py py-class docutils literal notranslate"><span class="pre">gymnasium.Wrapper</span></code></a>.</p>
|
||
<ul class="simple">
|
||
<li><p>You can set a new action or observation space by defining <code class="docutils literal notranslate"><span class="pre">self.action_space</span></code> or <code class="docutils literal notranslate"><span class="pre">self.observation_space</span></code> in <code class="docutils literal notranslate"><span class="pre">__init__</span></code>, respectively</p></li>
|
||
<li><p>You can set new metadata and reward range by defining <code class="docutils literal notranslate"><span class="pre">self.metadata</span></code> and <code class="docutils literal notranslate"><span class="pre">self.reward_range</span></code> in <code class="docutils literal notranslate"><span class="pre">__init__</span></code>, respectively</p></li>
|
||
<li><p>You can override <a class="reference internal" href="../../../api/wrappers/#gymnasium.Wrapper.step" title="gymnasium.Wrapper.step"><code class="xref py py-meth docutils literal notranslate"><span class="pre">gymnasium.Wrapper.step()</span></code></a>, <code class="xref py py-meth docutils literal notranslate"><span class="pre">gymnasium.Wrapper.render()</span></code>, <a class="reference internal" href="../../../api/wrappers/#gymnasium.Wrapper.close" title="gymnasium.Wrapper.close"><code class="xref py py-meth docutils literal notranslate"><span class="pre">gymnasium.Wrapper.close()</span></code></a> etc.</p></li>
|
||
</ul>
|
||
<p>If you do this, you can access the environment that was passed
|
||
to your wrapper (which <em>still</em> might be wrapped in some other wrapper) by accessing the attribute <code class="xref py py-attr docutils literal notranslate"><span class="pre">env</span></code>.</p>
|
||
<p>Let’s also take a look at an example for this case. Most MuJoCo environments return a reward that consists
|
||
of different terms: For instance, there might be a term that rewards the agent for completing the task and one term that
|
||
penalizes large actions (i.e. energy usage). Usually, you can pass weight parameters for those terms during
|
||
initialization of the environment. However, <em>Reacher</em> does not allow you to do this! Nevertheless, all individual terms
|
||
of the reward are returned in <cite>info</cite>, so let us build a wrapper for Reacher that allows us to weight those terms:</p>
|
||
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="k">class</span> <span class="nc">ReacherRewardWrapper</span><span class="p">(</span><span class="n">Wrapper</span><span class="p">):</span>
|
||
<span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">env</span><span class="p">,</span> <span class="n">reward_dist_weight</span><span class="p">,</span> <span class="n">reward_ctrl_weight</span><span class="p">):</span>
|
||
<span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="fm">__init__</span><span class="p">(</span><span class="n">env</span><span class="p">)</span>
|
||
<span class="bp">self</span><span class="o">.</span><span class="n">reward_dist_weight</span> <span class="o">=</span> <span class="n">reward_dist_weight</span>
|
||
<span class="bp">self</span><span class="o">.</span><span class="n">reward_ctrl_weight</span> <span class="o">=</span> <span class="n">reward_ctrl_weight</span>
|
||
|
||
<span class="k">def</span> <span class="nf">step</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">action</span><span class="p">):</span>
|
||
<span class="n">obs</span><span class="p">,</span> <span class="n">_</span><span class="p">,</span> <span class="n">terminated</span><span class="p">,</span> <span class="n">truncated</span><span class="p">,</span> <span class="n">info</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">env</span><span class="o">.</span><span class="n">step</span><span class="p">(</span><span class="n">action</span><span class="p">)</span>
|
||
<span class="n">reward</span> <span class="o">=</span> <span class="p">(</span>
|
||
<span class="bp">self</span><span class="o">.</span><span class="n">reward_dist_weight</span> <span class="o">*</span> <span class="n">info</span><span class="p">[</span><span class="s2">"reward_dist"</span><span class="p">]</span>
|
||
<span class="o">+</span> <span class="bp">self</span><span class="o">.</span><span class="n">reward_ctrl_weight</span> <span class="o">*</span> <span class="n">info</span><span class="p">[</span><span class="s2">"reward_ctrl"</span><span class="p">]</span>
|
||
<span class="p">)</span>
|
||
<span class="k">return</span> <span class="n">obs</span><span class="p">,</span> <span class="n">reward</span><span class="p">,</span> <span class="n">terminated</span><span class="p">,</span> <span class="n">truncated</span><span class="p">,</span> <span class="n">info</span>
|
||
</pre></div>
|
||
</div>
|
||
<div class="sphx-glr-footer sphx-glr-footer-example docutils container" id="sphx-glr-download-tutorials-gymnasium-basics-implementing-custom-wrappers-py">
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<div class="sphx-glr-download sphx-glr-download-python docutils container">
|
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<p><a class="reference download internal" download="" href="../../../_downloads/edd29dab6b748d30e0d5574912999157/implementing_custom_wrappers.py"><code class="xref download docutils literal notranslate"><span class="pre">Download</span> <span class="pre">Python</span> <span class="pre">source</span> <span class="pre">code:</span> <span class="pre">implementing_custom_wrappers.py</span></code></a></p>
|
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|
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<div class="sphx-glr-download sphx-glr-download-jupyter docutils container">
|
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<p><a class="reference download internal" download="" href="../../../_downloads/b4e38e84e3b5c293cbde554ccbba7111/implementing_custom_wrappers.ipynb"><code class="xref download docutils literal notranslate"><span class="pre">Download</span> <span class="pre">Jupyter</span> <span class="pre">notebook:</span> <span class="pre">implementing_custom_wrappers.ipynb</span></code></a></p>
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||
</span>
|
||
</div>
|
||
<div class="toc-tree-container">
|
||
<div class="toc-tree">
|
||
<ul>
|
||
<li><a class="reference internal" href="#">Implementing Custom Wrappers</a><ul>
|
||
<li><a class="reference internal" href="#inheriting-from-gymnasium-observationwrapper">Inheriting from <code class="xref py py-class docutils literal notranslate"><span class="pre">gymnasium.ObservationWrapper</span></code></a></li>
|
||
<li><a class="reference internal" href="#inheriting-from-gymnasium-actionwrapper">Inheriting from <code class="xref py py-class docutils literal notranslate"><span class="pre">gymnasium.ActionWrapper</span></code></a></li>
|
||
<li><a class="reference internal" href="#inheriting-from-gymnasium-rewardwrapper">Inheriting from <code class="xref py py-class docutils literal notranslate"><span class="pre">gymnasium.RewardWrapper</span></code></a></li>
|
||
<li><a class="reference internal" href="#inheriting-from-gymnasium-wrapper">Inheriting from <code class="xref py py-class docutils literal notranslate"><span class="pre">gymnasium.Wrapper</span></code></a></li>
|
||
</ul>
|
||
</li>
|
||
</ul>
|
||
|
||
</div>
|
||
</div>
|
||
</div>
|
||
|
||
|
||
</aside>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
<script>
|
||
const toggleMenu = () => {
|
||
const menuBtn = document.querySelector(".farama-header-menu__btn");
|
||
const menuContainer = document.querySelector(".farama-header-menu-container");
|
||
if (document.querySelector(".farama-header-menu").classList.contains("active")) {
|
||
menuBtn.setAttribute("aria-expanded", "false");
|
||
menuContainer.setAttribute("aria-hidden", "true");
|
||
} else {
|
||
menuBtn.setAttribute("aria-expanded", "true");
|
||
menuContainer.setAttribute("aria-hidden", "false");
|
||
}
|
||
document.querySelector(".farama-header-menu").classList.toggle("active");
|
||
}
|
||
|
||
document.querySelector(".farama-header-menu__btn").addEventListener("click", toggleMenu);
|
||
document.getElementById("farama-close-menu").addEventListener("click", toggleMenu);
|
||
</script>
|
||
|
||
|
||
<script>
|
||
(() => {
|
||
if (!localStorage.getItem("shownCookieAlert")) {
|
||
const boxElem = document.createElement("div");
|
||
boxElem.classList.add("cookie-alert");
|
||
const containerElem = document.createElement("div");
|
||
containerElem.classList.add("cookie-alert__container");
|
||
const textElem = document.createElement("p");
|
||
textElem.innerHTML = `This page uses <a href="https://analytics.google.com/">
|
||
Google Analytics</a> to collect statistics. You can disable it by blocking
|
||
the JavaScript coming from www.google-analytics.com.`;
|
||
containerElem.appendChild(textElem);
|
||
const closeBtn = document.createElement("button");
|
||
closeBtn.innerHTML = `<?xml version="1.0" ?><svg viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg"><defs><style>.cls-1{fill:none;stroke:#000;stroke-linecap:round;stroke-linejoin:round;stroke-width:2px;}</style></defs><title/><g id="cross"><line class="cls-1" x1="7" x2="25" y1="7" y2="25"/><line class="cls-1" x1="7" x2="25" y1="25" y2="7"/></g></svg>`
|
||
closeBtn.onclick = () => {
|
||
localStorage.setItem("shownCookieAlert", "true");
|
||
boxElem.style.display = "none";
|
||
}
|
||
containerElem.appendChild(closeBtn);
|
||
boxElem.appendChild(containerElem);
|
||
document.body.appendChild(boxElem);
|
||
}
|
||
})()
|
||
</script>
|
||
|
||
<script async src="https://www.googletagmanager.com/gtag/js?id=G-6H9C8TWXZ8"></script>
|
||
<script>
|
||
window.dataLayer = window.dataLayer || [];
|
||
function gtag(){dataLayer.push(arguments);}
|
||
gtag('js', new Date());
|
||
|
||
gtag('config', 'G-6H9C8TWXZ8');
|
||
</script>
|
||
|
||
<script data-url_root="../../../" id="documentation_options" src="../../../_static/documentation_options.js"></script>
|
||
<script src="../../../_static/doctools.js"></script>
|
||
<script src="../../../_static/sphinx_highlight.js"></script>
|
||
<script src="../../../_static/scripts/furo.js"></script>
|
||
|
||
<script>
|
||
const createCORSRequest = (method, url) => {
|
||
let xhr = new XMLHttpRequest();
|
||
xhr.responseType = 'json';
|
||
|
||
if ("withCredentials" in xhr) {
|
||
xhr.open(method, url, true);
|
||
} else if (typeof XDomainRequest != "undefined") {
|
||
// IE8 & IE9
|
||
xhr = new XDomainRequest();
|
||
xhr.open(method, url);
|
||
} else {
|
||
// CORS not supported.
|
||
xhr = null;
|
||
}
|
||
return xhr;
|
||
};
|
||
|
||
const url = 'https://farama.org/api/projects.json';
|
||
const imagesBasepath = "https://farama.org/assets/images"
|
||
const method = 'GET';
|
||
let xhr = createCORSRequest(method, url);
|
||
|
||
xhr.onload = () => {
|
||
const jsonResponse = xhr.response;
|
||
const sections = {
|
||
"Documentation": [],
|
||
"Mature Projects": [],
|
||
"Incubating Projects": [],
|
||
"Foundation": [
|
||
{
|
||
name: "About",
|
||
link: "https://farama.org/about"
|
||
},
|
||
{
|
||
name: "Standards",
|
||
link: "https://farama.org/project_standards",
|
||
},
|
||
{
|
||
name: "Donate",
|
||
link: "https://farama.org/donations"
|
||
}
|
||
]
|
||
}
|
||
Object.keys(jsonResponse).forEach(key => {
|
||
projectJson = jsonResponse[key];
|
||
if (projectJson.website !== null) {
|
||
projectJson.link = projectJson.website;
|
||
sections["Documentation"].push(projectJson)
|
||
} else if (projectJson.type == "mature") {
|
||
projectJson.link = projectJson.github;
|
||
sections["Mature Projects"].push(projectJson)
|
||
} else {
|
||
projectJson.link = projectJson.github;
|
||
sections["Incubating Projects"].push(projectJson)
|
||
}
|
||
})
|
||
|
||
const menuContainer = document.querySelector(".farama-header-menu__body");
|
||
|
||
Object.keys(sections).forEach((key, i) => {
|
||
projects = sections[key];
|
||
const sectionElem = Object.assign(
|
||
document.createElement('div'), {
|
||
className:'farama-header-menu__section',
|
||
style: "padding-left: 24px"
|
||
}
|
||
)
|
||
sectionElem.appendChild(Object.assign(document.createElement('span'),
|
||
{
|
||
className:'farama-header-menu__section-title' ,
|
||
innerText: key
|
||
}
|
||
))
|
||
const ulElem = Object.assign(document.createElement('ul'),
|
||
{
|
||
className:'farama-header-menu-list',
|
||
}
|
||
)
|
||
for (let project of projects) {
|
||
const liElem = document.createElement("li");
|
||
const aElem = Object.assign(document.createElement("a"),
|
||
{
|
||
href: project.link
|
||
}
|
||
);
|
||
liElem.appendChild(aElem);
|
||
if (key !== "Foundation") {
|
||
const imgElem = Object.assign(document.createElement("img"),
|
||
{
|
||
src: project.image ? imagesBasepath + project.image : imagesBasepath + "/farama_black.svg",
|
||
alt: `${project.name} logo`,
|
||
className: "farama-black-logo-invert"
|
||
}
|
||
);
|
||
aElem.appendChild(imgElem);
|
||
}
|
||
aElem.appendChild(document.createTextNode(project.name));
|
||
ulElem.appendChild(liElem);
|
||
}
|
||
sectionElem.appendChild(ulElem);
|
||
menuContainer.appendChild(sectionElem)
|
||
});
|
||
}
|
||
|
||
xhr.onerror = function() {
|
||
console.error("Unable to load projects");
|
||
};
|
||
|
||
xhr.send();
|
||
</script>
|
||
|
||
|
||
<script>
|
||
const versioningConfig = {
|
||
githubUser: 'Farama-Foundation',
|
||
githubRepo: 'Gymnasium',
|
||
};
|
||
fetch('/main/_static/versioning/versioning_menu.html').then(response => {
|
||
if (response.status === 200) {
|
||
response.text().then(text => {
|
||
const container = document.createElement("div");
|
||
container.innerHTML = text;
|
||
document.querySelector("body").appendChild(container);
|
||
// innerHtml doenst evaluate scripts, we need to add them dynamically
|
||
Array.from(container.querySelectorAll("script")).forEach(oldScript => {
|
||
const newScript = document.createElement("script");
|
||
Array.from(oldScript.attributes).forEach(attr => newScript.setAttribute(attr.name, attr.value));
|
||
newScript.appendChild(document.createTextNode(oldScript.innerHTML));
|
||
oldScript.parentNode.replaceChild(newScript, oldScript);
|
||
});
|
||
});
|
||
} else {
|
||
console.warn("Unable to load versioning menu", response);
|
||
}
|
||
});
|
||
</script>
|
||
|
||
</body>
|
||
</html> |