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<p class="caption" role="heading"><span class="caption-text">Introduction</span></p>
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<li class="toctree-l1"><a class="reference internal" href="../../introduction/basic_usage/">Basic Usage</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../introduction/train_agent/">Training an Agent</a></li>
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<li class="toctree-l1"><a class="reference internal" href="../../introduction/migration_guide/">Migration Guide - v0.21 to v1.0.0</a></li>
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<p class="caption" role="heading"><span class="caption-text">API</span></p>
<ul class="current">
<li class="toctree-l1"><a class="reference internal" href="../env/">Env</a></li>
<li class="toctree-l1"><a class="reference internal" href="../registry/">Make and register</a></li>
<li class="toctree-l1 has-children"><a class="reference internal" href="../spaces/">Spaces</a><input class="toctree-checkbox" id="toctree-checkbox-1" name="toctree-checkbox-1" role="switch" type="checkbox"/><label for="toctree-checkbox-1"><div class="visually-hidden">Toggle navigation of Spaces</div><i class="icon"><svg><use href="#svg-arrow-right"></use></svg></i></label><ul>
<li class="toctree-l2"><a class="reference internal" href="../spaces/fundamental/">Fundamental Spaces</a></li>
<li class="toctree-l2"><a class="reference internal" href="../spaces/composite/">Composite Spaces</a></li>
<li class="toctree-l2"><a class="reference internal" href="../spaces/utils/">Spaces Utils</a></li>
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<li class="toctree-l1 current has-children current-page"><a class="current reference internal" href="#">Vectorize</a><input checked="" class="toctree-checkbox" id="toctree-checkbox-3" name="toctree-checkbox-3" role="switch" type="checkbox"/><label for="toctree-checkbox-3"><div class="visually-hidden">Toggle navigation of Vectorize</div><i class="icon"><svg><use href="#svg-arrow-right"></use></svg></i></label><ul>
<li class="toctree-l2"><a class="reference internal" href="wrappers/">Wrappers</a></li>
<li class="toctree-l2"><a class="reference internal" href="async_vector_env/">AsyncVectorEnv</a></li>
<li class="toctree-l2"><a class="reference internal" href="sync_vector_env/">SyncVectorEnv</a></li>
<li class="toctree-l2"><a class="reference internal" href="utils/">Utility functions</a></li>
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<li class="toctree-l1"><a class="reference internal" href="../utils/">Utility functions</a></li>
<li class="toctree-l1"><a class="reference internal" href="../functional/">Functional Env</a></li>
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<p class="caption" role="heading"><span class="caption-text">Environments</span></p>
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<li class="toctree-l1 has-children"><a class="reference internal" href="../../environments/classic_control/">Classic Control</a><input class="toctree-checkbox" id="toctree-checkbox-4" name="toctree-checkbox-4" role="switch" type="checkbox"/><label for="toctree-checkbox-4"><div class="visually-hidden">Toggle navigation of Classic Control</div><i class="icon"><svg><use href="#svg-arrow-right"></use></svg></i></label><ul>
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<li class="toctree-l2"><a class="reference internal" href="../../environments/classic_control/pendulum/">Pendulum</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../../environments/toy_text/blackjack/">Blackjack</a></li>
<li class="toctree-l2"><a class="reference internal" href="../../environments/toy_text/taxi/">Taxi</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../../environments/toy_text/frozen_lake/">Frozen Lake</a></li>
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<li class="toctree-l1 has-children"><a class="reference internal" href="../../environments/mujoco/">MuJoCo</a><input class="toctree-checkbox" id="toctree-checkbox-7" name="toctree-checkbox-7" role="switch" type="checkbox"/><label for="toctree-checkbox-7"><div class="visually-hidden">Toggle navigation of MuJoCo</div><i class="icon"><svg><use href="#svg-arrow-right"></use></svg></i></label><ul>
<li class="toctree-l2"><a class="reference internal" href="../../environments/mujoco/ant/">Ant</a></li>
<li class="toctree-l2"><a class="reference internal" href="../../environments/mujoco/half_cheetah/">Half Cheetah</a></li>
<li class="toctree-l2"><a class="reference internal" href="../../environments/mujoco/hopper/">Hopper</a></li>
<li class="toctree-l2"><a class="reference internal" href="../../environments/mujoco/humanoid/">Humanoid</a></li>
<li class="toctree-l2"><a class="reference internal" href="../../environments/mujoco/humanoid_standup/">Humanoid Standup</a></li>
<li class="toctree-l2"><a class="reference internal" href="../../environments/mujoco/inverted_double_pendulum/">Inverted Double Pendulum</a></li>
<li class="toctree-l2"><a class="reference internal" href="../../environments/mujoco/inverted_pendulum/">Inverted Pendulum</a></li>
<li class="toctree-l2"><a class="reference internal" href="../../environments/mujoco/pusher/">Pusher</a></li>
<li class="toctree-l2"><a class="reference internal" href="../../environments/mujoco/reacher/">Reacher</a></li>
<li class="toctree-l2"><a class="reference internal" href="../../environments/mujoco/swimmer/">Swimmer</a></li>
<li class="toctree-l2"><a class="reference internal" href="../../environments/mujoco/walker2d/">Walker2D</a></li>
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<li class="toctree-l1"><a class="reference internal" href="../../environments/atari/">Atari</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../environments/third_party_environments/">External Environments</a></li>
</ul>
<p class="caption" role="heading"><span class="caption-text">Tutorials</span></p>
<ul>
<li class="toctree-l1 has-children"><a class="reference internal" href="../../tutorials/gymnasium_basics/">Gymnasium Basics Documentation Links</a><input class="toctree-checkbox" id="toctree-checkbox-8" name="toctree-checkbox-8" role="switch" type="checkbox"/><label for="toctree-checkbox-8"><div class="visually-hidden">Toggle navigation of Gymnasium Basics Documentation Links</div><i class="icon"><svg><use href="#svg-arrow-right"></use></svg></i></label><ul>
<li class="toctree-l2"><a class="reference internal" href="../../tutorials/gymnasium_basics/load_quadruped_model/">Load custom quadruped robot environments</a></li>
<li class="toctree-l2"><a class="reference internal" href="../../tutorials/gymnasium_basics/handling_time_limits/">Handling Time Limits</a></li>
<li class="toctree-l2"><a class="reference internal" href="../../tutorials/gymnasium_basics/implementing_custom_wrappers/">Implementing Custom Wrappers</a></li>
<li class="toctree-l2"><a class="reference internal" href="../../tutorials/gymnasium_basics/environment_creation/">Make your own custom environment</a></li>
<li class="toctree-l2"><a class="reference internal" href="../../tutorials/gymnasium_basics/vector_envs_tutorial/">Training A2C with Vector Envs and Domain Randomization</a></li>
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<li class="toctree-l1 has-children"><a class="reference internal" href="../../tutorials/training_agents/">Training Agents links in the Gymnasium Documentation</a><input 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 navigation of Training Agents links in the Gymnasium Documentation</div><i class="icon"><svg><use href="#svg-arrow-right"></use></svg></i></label><ul>
<li class="toctree-l2"><a class="reference internal" href="../../tutorials/training_agents/reinforce_invpend_gym_v26/">Training using REINFORCE for Mujoco</a></li>
<li class="toctree-l2"><a class="reference internal" href="../../tutorials/training_agents/blackjack_tutorial/">Solving Blackjack with Q-Learning</a></li>
<li class="toctree-l2"><a class="reference internal" href="../../tutorials/training_agents/FrozenLake_tuto/">Frozenlake benchmark</a></li>
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<li class="toctree-l1"><a class="reference internal" href="../../tutorials/third-party-tutorials/">Third-Party Tutorials</a></li>
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<li class="toctree-l1"><a class="reference external" href="https://github.com/Farama-Foundation/Gymnasium">Github</a></li>
<li class="toctree-l1"><a class="reference external" href="https://arxiv.org/abs/2407.17032">Paper</a></li>
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<li class="toctree-l1"><a class="reference internal" href="../../gym_release_notes/">Gym Release Notes</a></li>
<li class="toctree-l1"><a class="reference external" href="https://github.com/Farama-Foundation/Gymnasium/blob/main/docs/README.md">Contribute to the Docs</a></li>
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<article role="main">
<section class="tex2jax_ignore mathjax_ignore" id="vectorize">
<h1>Vectorize<a class="headerlink" href="#vectorize" title="Link to this heading"></a></h1>
<div class="toctree-wrapper compound">
</div>
<section id="gymnasium-vector-vectorenv">
<h2>Gymnasium.vector.VectorEnv<a class="headerlink" href="#gymnasium-vector-vectorenv" title="Link to this heading"></a></h2>
<dl class="py class">
<dt class="sig sig-object py" id="gymnasium.vector.VectorEnv">
<em class="property"><span class="pre">class</span><span class="w"> </span></em><span class="sig-prename descclassname"><span class="pre">gymnasium.vector.</span></span><span class="sig-name descname"><span class="pre">VectorEnv</span></span><a class="reference internal" href="../../_modules/gymnasium/vector/vector_env/#VectorEnv"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#gymnasium.vector.VectorEnv" title="Link to this definition"></a></dt>
<dd><p>Base class for vectorized environments to run multiple independent copies of the same environment in parallel.</p>
<p>Vector environments can provide a linear speed-up in the steps taken per second through sampling multiple
sub-environments at the same time. Gymnasium contains two generalised Vector environments: <a class="reference internal" href="async_vector_env/#gymnasium.vector.AsyncVectorEnv" title="gymnasium.vector.AsyncVectorEnv"><code class="xref py py-class docutils literal notranslate"><span class="pre">AsyncVectorEnv</span></code></a>
and <a class="reference internal" href="sync_vector_env/#gymnasium.vector.SyncVectorEnv" title="gymnasium.vector.SyncVectorEnv"><code class="xref py py-class docutils literal notranslate"><span class="pre">SyncVectorEnv</span></code></a> along with several custom vector environment implementations.
For <a class="reference internal" href="#gymnasium.vector.VectorEnv.reset" title="gymnasium.vector.VectorEnv.reset"><code class="xref py py-func docutils literal notranslate"><span class="pre">reset()</span></code></a> and <a class="reference internal" href="#gymnasium.vector.VectorEnv.step" title="gymnasium.vector.VectorEnv.step"><code class="xref py py-func docutils literal notranslate"><span class="pre">step()</span></code></a> batches <cite>observations</cite>, <cite>rewards</cite>, <cite>terminations</cite>, <cite>truncations</cite> and
<cite>info</cite> for each sub-environment, see the example below. For the <cite>rewards</cite>, <cite>terminations</cite>, and <cite>truncations</cite>,
the data is packaged into a NumPy array of shape <cite>(num_envs,)</cite>. For <cite>observations</cite> (and <cite>actions</cite>, the batching
process is dependent on the type of observation (and action) space, and generally optimised for neural network
input/outputs. For <cite>info</cite>, the data is kept as a dictionary such that a key will give the data for all sub-environment.</p>
<p>For creating environments, <code class="xref py py-func docutils literal notranslate"><span class="pre">make_vec()</span></code> is a vector environment equivalent to <code class="xref py py-func docutils literal notranslate"><span class="pre">make()</span></code> for easily creating
vector environments that contains several unique arguments for modifying environment qualities, number of environment,
vectorizer type, vectorizer arguments.</p>
<p>To avoid having to wait for all sub-environments to terminated before resetting, implementations can autoreset
sub-environments on episode end (<cite>terminated or truncated is True</cite>). This is crucial for correct implementing training
algorithms with vector environments. By default, Gymnasiums implementation uses <cite>next-step</cite> autoreset, with
<code class="xref py py-class docutils literal notranslate"><span class="pre">AutoresetMode</span></code> enum as the options. The mode used by vector environment should be available in <cite>metadata[“autoreset_mode”]</cite>.
Warning, some vector implementations or training algorithms will only support particular autoreset modes.
For more information, read <a class="reference external" href="https://farama.org/Vector-Autoreset-Mode">https://farama.org/Vector-Autoreset-Mode</a>.</p>
<div class="admonition note">
<p class="admonition-title">Note</p>
<p>The info parameter of <a class="reference internal" href="#gymnasium.vector.VectorEnv.reset" title="gymnasium.vector.VectorEnv.reset"><code class="xref py py-meth docutils literal notranslate"><span class="pre">reset()</span></code></a> and <a class="reference internal" href="#gymnasium.vector.VectorEnv.step" title="gymnasium.vector.VectorEnv.step"><code class="xref py py-meth docutils literal notranslate"><span class="pre">step()</span></code></a> was originally implemented before v0.25 as a list
of dictionary for each sub-environment. However, this was modified in v0.25+ to be a dictionary with a NumPy
array for each key. To use the old info style, utilise the <code class="xref py py-class docutils literal notranslate"><span class="pre">DictInfoToList</span></code> wrapper.</p>
</div>
<p class="rubric">Examples</p>
<div class="doctest highlight-default notranslate"><div class="highlight"><pre><span></span><span class="gp">&gt;&gt;&gt; </span><span class="kn">import</span><span class="w"> </span><span class="nn">gymnasium</span><span class="w"> </span><span class="k">as</span><span class="w"> </span><span class="nn">gym</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">envs</span> <span class="o">=</span> <span class="n">gym</span><span class="o">.</span><span class="n">make_vec</span><span class="p">(</span><span class="s2">&quot;CartPole-v1&quot;</span><span class="p">,</span> <span class="n">num_envs</span><span class="o">=</span><span class="mi">3</span><span class="p">,</span> <span class="n">vectorization_mode</span><span class="o">=</span><span class="s2">&quot;sync&quot;</span><span class="p">,</span> <span class="n">wrappers</span><span class="o">=</span><span class="p">(</span><span class="n">gym</span><span class="o">.</span><span class="n">wrappers</span><span class="o">.</span><span class="n">TimeAwareObservation</span><span class="p">,))</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">envs</span> <span class="o">=</span> <span class="n">gym</span><span class="o">.</span><span class="n">wrappers</span><span class="o">.</span><span class="n">vector</span><span class="o">.</span><span class="n">ClipReward</span><span class="p">(</span><span class="n">envs</span><span class="p">,</span> <span class="n">min_reward</span><span class="o">=</span><span class="mf">0.2</span><span class="p">,</span> <span class="n">max_reward</span><span class="o">=</span><span class="mf">0.8</span><span class="p">)</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">envs</span>
<span class="go">&lt;ClipReward, SyncVectorEnv(CartPole-v1, num_envs=3)&gt;</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">envs</span><span class="o">.</span><span class="n">num_envs</span>
<span class="go">3</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">envs</span><span class="o">.</span><span class="n">action_space</span>
<span class="go">MultiDiscrete([2 2 2])</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">envs</span><span class="o">.</span><span class="n">observation_space</span>
<span class="go">Box([[-4.80000019 -inf -0.41887903 -inf 0. ]</span>
<span class="go"> [-4.80000019 -inf -0.41887903 -inf 0. ]</span>
<span class="go"> [-4.80000019 -inf -0.41887903 -inf 0. ]], [[4.80000019e+00 inf 4.18879032e-01 inf</span>
<span class="go"> 5.00000000e+02]</span>
<span class="go"> [4.80000019e+00 inf 4.18879032e-01 inf</span>
<span class="go"> 5.00000000e+02]</span>
<span class="go"> [4.80000019e+00 inf 4.18879032e-01 inf</span>
<span class="go"> 5.00000000e+02]], (3, 5), float64)</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">observations</span><span class="p">,</span> <span class="n">infos</span> <span class="o">=</span> <span class="n">envs</span><span class="o">.</span><span class="n">reset</span><span class="p">(</span><span class="n">seed</span><span class="o">=</span><span class="mi">123</span><span class="p">)</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">observations</span>
<span class="go">array([[ 0.01823519, -0.0446179 , -0.02796401, -0.03156282, 0. ],</span>
<span class="go"> [ 0.02852531, 0.02858594, 0.0469136 , 0.02480598, 0. ],</span>
<span class="go"> [ 0.03517495, -0.000635 , -0.01098382, -0.03203924, 0. ]])</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">infos</span>
<span class="go">{}</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">_</span> <span class="o">=</span> <span class="n">envs</span><span class="o">.</span><span class="n">action_space</span><span class="o">.</span><span class="n">seed</span><span class="p">(</span><span class="mi">123</span><span class="p">)</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">actions</span> <span class="o">=</span> <span class="n">envs</span><span class="o">.</span><span class="n">action_space</span><span class="o">.</span><span class="n">sample</span><span class="p">()</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">observations</span><span class="p">,</span> <span class="n">rewards</span><span class="p">,</span> <span class="n">terminations</span><span class="p">,</span> <span class="n">truncations</span><span class="p">,</span> <span class="n">infos</span> <span class="o">=</span> <span class="n">envs</span><span class="o">.</span><span class="n">step</span><span class="p">(</span><span class="n">actions</span><span class="p">)</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">observations</span>
<span class="go">array([[ 0.01734283, 0.15089367, -0.02859527, -0.33293587, 1. ],</span>
<span class="go"> [ 0.02909703, -0.16717631, 0.04740972, 0.3319138 , 1. ],</span>
<span class="go"> [ 0.03516225, -0.19559774, -0.01162461, 0.25715804, 1. ]])</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">rewards</span>
<span class="go">array([0.8, 0.8, 0.8])</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">terminations</span>
<span class="go">array([False, False, False])</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">truncations</span>
<span class="go">array([False, False, False])</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">infos</span>
<span class="go">{}</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">envs</span><span class="o">.</span><span class="n">close</span><span class="p">()</span>
</pre></div>
</div>
<p>The Vector Environments have the additional attributes for users to understand the implementation</p>
<ul class="simple">
<li><p><a class="reference internal" href="#gymnasium.vector.VectorEnv.num_envs" title="gymnasium.vector.VectorEnv.num_envs"><code class="xref py py-attr docutils literal notranslate"><span class="pre">num_envs</span></code></a> - The number of sub-environment in the vector environment</p></li>
<li><p><a class="reference internal" href="#gymnasium.vector.VectorEnv.observation_space" title="gymnasium.vector.VectorEnv.observation_space"><code class="xref py py-attr docutils literal notranslate"><span class="pre">observation_space</span></code></a> - The batched observation space of the vector environment</p></li>
<li><p><a class="reference internal" href="#gymnasium.vector.VectorEnv.single_observation_space" title="gymnasium.vector.VectorEnv.single_observation_space"><code class="xref py py-attr docutils literal notranslate"><span class="pre">single_observation_space</span></code></a> - The observation space of a single sub-environment</p></li>
<li><p><a class="reference internal" href="#gymnasium.vector.VectorEnv.action_space" title="gymnasium.vector.VectorEnv.action_space"><code class="xref py py-attr docutils literal notranslate"><span class="pre">action_space</span></code></a> - The batched action space of the vector environment</p></li>
<li><p><a class="reference internal" href="#gymnasium.vector.VectorEnv.single_action_space" title="gymnasium.vector.VectorEnv.single_action_space"><code class="xref py py-attr docutils literal notranslate"><span class="pre">single_action_space</span></code></a> - The action space of a single sub-environment</p></li>
</ul>
</dd></dl>
<section id="methods">
<h3>Methods<a class="headerlink" href="#methods" title="Link to this heading"></a></h3>
<dl class="py method">
<dt class="sig sig-object py" id="gymnasium.vector.VectorEnv.step">
<span class="sig-prename descclassname"><span class="pre">VectorEnv.</span></span><span class="sig-name descname"><span class="pre">step</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">actions</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">ActType</span></span></em><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">&#x2192;</span> <span class="sig-return-typehint"><span class="pre">tuple</span><span class="p"><span class="pre">[</span></span><span class="pre">ObsType</span><span class="p"><span class="pre">,</span></span><span class="w"> </span><span class="pre">ArrayType</span><span class="p"><span class="pre">,</span></span><span class="w"> </span><span class="pre">ArrayType</span><span class="p"><span class="pre">,</span></span><span class="w"> </span><span class="pre">ArrayType</span><span class="p"><span class="pre">,</span></span><span class="w"> </span><span class="pre">dict</span><span class="p"><span class="pre">[</span></span><span class="pre">str</span><span class="p"><span class="pre">,</span></span><span class="w"> </span><span class="pre">Any</span><span class="p"><span class="pre">]</span></span><span class="p"><span class="pre">]</span></span></span></span><a class="reference internal" href="../../_modules/gymnasium/vector/vector_env/#VectorEnv.step"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#gymnasium.vector.VectorEnv.step" title="Link to this definition"></a></dt>
<dd><p>Take an action for each parallel environment.</p>
<dl class="field-list simple">
<dt class="field-odd">Parameters<span class="colon">:</span></dt>
<dd class="field-odd"><p><strong>actions</strong> Batch of actions with the <a class="reference internal" href="#gymnasium.vector.VectorEnv.action_space" title="gymnasium.vector.VectorEnv.action_space"><code class="xref py py-attr docutils literal notranslate"><span class="pre">action_space</span></code></a> shape.</p>
</dd>
<dt class="field-even">Returns<span class="colon">:</span></dt>
<dd class="field-even"><p><strong>Batch of</strong> (<em>observations, rewards, terminations, truncations, infos</em>)</p>
</dd>
</dl>
<div class="admonition note">
<p class="admonition-title">Note</p>
<p>As the vector environments autoreset for a terminating and truncating sub-environments, this will occur on
the next step after <cite>terminated or truncated is True</cite>.</p>
</div>
<p class="rubric">Example</p>
<div class="doctest highlight-default notranslate"><div class="highlight"><pre><span></span><span class="gp">&gt;&gt;&gt; </span><span class="kn">import</span><span class="w"> </span><span class="nn">gymnasium</span><span class="w"> </span><span class="k">as</span><span class="w"> </span><span class="nn">gym</span>
<span class="gp">&gt;&gt;&gt; </span><span class="kn">import</span><span class="w"> </span><span class="nn">numpy</span><span class="w"> </span><span class="k">as</span><span class="w"> </span><span class="nn">np</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">envs</span> <span class="o">=</span> <span class="n">gym</span><span class="o">.</span><span class="n">make_vec</span><span class="p">(</span><span class="s2">&quot;CartPole-v1&quot;</span><span class="p">,</span> <span class="n">num_envs</span><span class="o">=</span><span class="mi">3</span><span class="p">,</span> <span class="n">vectorization_mode</span><span class="o">=</span><span class="s2">&quot;sync&quot;</span><span class="p">)</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">_</span> <span class="o">=</span> <span class="n">envs</span><span class="o">.</span><span class="n">reset</span><span class="p">(</span><span class="n">seed</span><span class="o">=</span><span class="mi">42</span><span class="p">)</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">actions</span> <span class="o">=</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="mi">1</span><span class="p">],</span> <span class="n">dtype</span><span class="o">=</span><span class="n">np</span><span class="o">.</span><span class="n">int32</span><span class="p">)</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">observations</span><span class="p">,</span> <span class="n">rewards</span><span class="p">,</span> <span class="n">terminations</span><span class="p">,</span> <span class="n">truncations</span><span class="p">,</span> <span class="n">infos</span> <span class="o">=</span> <span class="n">envs</span><span class="o">.</span><span class="n">step</span><span class="p">(</span><span class="n">actions</span><span class="p">)</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">observations</span>
<span class="go">array([[ 0.02727336, 0.18847767, 0.03625453, -0.26141977],</span>
<span class="go"> [ 0.01431748, -0.24002443, -0.04731862, 0.3110827 ],</span>
<span class="go"> [-0.03822722, 0.1710671 , -0.00848456, -0.2487226 ]],</span>
<span class="go"> dtype=float32)</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">rewards</span>
<span class="go">array([1., 1., 1.])</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">terminations</span>
<span class="go">array([False, False, False])</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">terminations</span>
<span class="go">array([False, False, False])</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">infos</span>
<span class="go">{}</span>
</pre></div>
</div>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="gymnasium.vector.VectorEnv.reset">
<span class="sig-prename descclassname"><span class="pre">VectorEnv.</span></span><span class="sig-name descname"><span class="pre">reset</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="o"><span class="pre">*</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">seed</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">int</span><span class="w"> </span><span class="p"><span class="pre">|</span></span><span class="w"> </span><span class="pre">None</span></span><span class="w"> </span><span class="o"><span class="pre">=</span></span><span class="w"> </span><span class="default_value"><span class="pre">None</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">options</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">dict</span><span class="p"><span class="pre">[</span></span><span class="pre">str</span><span class="p"><span class="pre">,</span></span><span class="w"> </span><span class="pre">Any</span><span class="p"><span class="pre">]</span></span><span class="w"> </span><span class="p"><span class="pre">|</span></span><span class="w"> </span><span class="pre">None</span></span><span class="w"> </span><span class="o"><span class="pre">=</span></span><span class="w"> </span><span class="default_value"><span class="pre">None</span></span></em><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">&#x2192;</span> <span class="sig-return-typehint"><span class="pre">tuple</span><span class="p"><span class="pre">[</span></span><span class="pre">ObsType</span><span class="p"><span class="pre">,</span></span><span class="w"> </span><span class="pre">dict</span><span class="p"><span class="pre">[</span></span><span class="pre">str</span><span class="p"><span class="pre">,</span></span><span class="w"> </span><span class="pre">Any</span><span class="p"><span class="pre">]</span></span><span class="p"><span class="pre">]</span></span></span></span><a class="reference internal" href="../../_modules/gymnasium/vector/vector_env/#VectorEnv.reset"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#gymnasium.vector.VectorEnv.reset" title="Link to this definition"></a></dt>
<dd><p>Reset all parallel environments and return a batch of initial observations and info.</p>
<dl class="field-list simple">
<dt class="field-odd">Parameters<span class="colon">:</span></dt>
<dd class="field-odd"><ul class="simple">
<li><p><strong>seed</strong> The environment reset seed</p></li>
<li><p><strong>options</strong> If to return the options</p></li>
</ul>
</dd>
<dt class="field-even">Returns<span class="colon">:</span></dt>
<dd class="field-even"><p><strong>A batch of observations and info from the vectorized environment.</strong></p>
</dd>
</dl>
<p class="rubric">Example</p>
<div class="doctest highlight-default notranslate"><div class="highlight"><pre><span></span><span class="gp">&gt;&gt;&gt; </span><span class="kn">import</span><span class="w"> </span><span class="nn">gymnasium</span><span class="w"> </span><span class="k">as</span><span class="w"> </span><span class="nn">gym</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">envs</span> <span class="o">=</span> <span class="n">gym</span><span class="o">.</span><span class="n">make_vec</span><span class="p">(</span><span class="s2">&quot;CartPole-v1&quot;</span><span class="p">,</span> <span class="n">num_envs</span><span class="o">=</span><span class="mi">3</span><span class="p">,</span> <span class="n">vectorization_mode</span><span class="o">=</span><span class="s2">&quot;sync&quot;</span><span class="p">)</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">observations</span><span class="p">,</span> <span class="n">infos</span> <span class="o">=</span> <span class="n">envs</span><span class="o">.</span><span class="n">reset</span><span class="p">(</span><span class="n">seed</span><span class="o">=</span><span class="mi">42</span><span class="p">)</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">observations</span>
<span class="go">array([[ 0.0273956 , -0.00611216, 0.03585979, 0.0197368 ],</span>
<span class="go"> [ 0.01522993, -0.04562247, -0.04799704, 0.03392126],</span>
<span class="go"> [-0.03774345, -0.02418869, -0.00942293, 0.0469184 ]],</span>
<span class="go"> dtype=float32)</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">infos</span>
<span class="go">{}</span>
</pre></div>
</div>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="gymnasium.vector.VectorEnv.render">
<span class="sig-prename descclassname"><span class="pre">VectorEnv.</span></span><span class="sig-name descname"><span class="pre">render</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">&#x2192;</span> <span class="sig-return-typehint"><span class="pre">tuple</span><span class="p"><span class="pre">[</span></span><span class="pre">RenderFrame</span><span class="p"><span class="pre">,</span></span><span class="w"> </span><span class="p"><span class="pre">...</span></span><span class="p"><span class="pre">]</span></span><span class="w"> </span><span class="p"><span class="pre">|</span></span><span class="w"> </span><span class="pre">None</span></span></span><a class="reference internal" href="../../_modules/gymnasium/vector/vector_env/#VectorEnv.render"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#gymnasium.vector.VectorEnv.render" title="Link to this definition"></a></dt>
<dd><p>Returns the rendered frames from the parallel environments.</p>
<dl class="field-list simple">
<dt class="field-odd">Returns<span class="colon">:</span></dt>
<dd class="field-odd"><p><strong>A tuple of rendered frames from the parallel environments</strong></p>
</dd>
</dl>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="gymnasium.vector.VectorEnv.close">
<span class="sig-prename descclassname"><span class="pre">VectorEnv.</span></span><span class="sig-name descname"><span class="pre">close</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="o"><span class="pre">**</span></span><span class="n"><span class="pre">kwargs</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">Any</span></span></em><span class="sig-paren">)</span><a class="reference internal" href="../../_modules/gymnasium/vector/vector_env/#VectorEnv.close"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#gymnasium.vector.VectorEnv.close" title="Link to this definition"></a></dt>
<dd><p>Close all parallel environments and release resources.</p>
<p>It also closes all the existing image viewers, then calls <code class="xref py py-meth docutils literal notranslate"><span class="pre">close_extras()</span></code> and set
<a class="reference internal" href="#gymnasium.vector.VectorEnv.closed" title="gymnasium.vector.VectorEnv.closed"><code class="xref py py-attr docutils literal notranslate"><span class="pre">closed</span></code></a> as <code class="docutils literal notranslate"><span class="pre">True</span></code>.</p>
<div class="admonition warning">
<p class="admonition-title">Warning</p>
<p>This function itself does not close the environments, it should be handled
in <code class="xref py py-meth docutils literal notranslate"><span class="pre">close_extras()</span></code>. This is generic for both synchronous and asynchronous
vectorized environments.</p>
</div>
<div class="admonition note">
<p class="admonition-title">Note</p>
<p>This will be automatically called when garbage collected or program exited.</p>
</div>
<dl class="field-list simple">
<dt class="field-odd">Parameters<span class="colon">:</span></dt>
<dd class="field-odd"><p><strong>**kwargs</strong> Keyword arguments passed to <code class="xref py py-meth docutils literal notranslate"><span class="pre">close_extras()</span></code></p>
</dd>
</dl>
</dd></dl>
</section>
<section id="attributes">
<h3>Attributes<a class="headerlink" href="#attributes" title="Link to this heading"></a></h3>
<dl class="py attribute">
<dt class="sig sig-object py" id="gymnasium.vector.VectorEnv.num_envs">
<span class="sig-prename descclassname"><span class="pre">VectorEnv.</span></span><span class="sig-name descname"><span class="pre">num_envs</span></span><em class="property"><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="pre">int</span></em><a class="headerlink" href="#gymnasium.vector.VectorEnv.num_envs" title="Link to this definition"></a></dt>
<dd><p>The number of sub-environments in the vector environment.</p>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="gymnasium.vector.VectorEnv.action_space">
<span class="sig-prename descclassname"><span class="pre">VectorEnv.</span></span><span class="sig-name descname"><span class="pre">action_space</span></span><em class="property"><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="pre">gym.Space</span></em><a class="headerlink" href="#gymnasium.vector.VectorEnv.action_space" title="Link to this definition"></a></dt>
<dd><p>The (batched) action space. The input actions of <cite>step</cite> must be valid elements of <cite>action_space</cite>.</p>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="gymnasium.vector.VectorEnv.observation_space">
<span class="sig-prename descclassname"><span class="pre">VectorEnv.</span></span><span class="sig-name descname"><span class="pre">observation_space</span></span><em class="property"><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="pre">gym.Space</span></em><a class="headerlink" href="#gymnasium.vector.VectorEnv.observation_space" title="Link to this definition"></a></dt>
<dd><p>The (batched) observation space. The observations returned by <cite>reset</cite> and <cite>step</cite> are valid elements of <cite>observation_space</cite>.</p>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="gymnasium.vector.VectorEnv.single_action_space">
<span class="sig-prename descclassname"><span class="pre">VectorEnv.</span></span><span class="sig-name descname"><span class="pre">single_action_space</span></span><em class="property"><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="pre">gym.Space</span></em><a class="headerlink" href="#gymnasium.vector.VectorEnv.single_action_space" title="Link to this definition"></a></dt>
<dd><p>The action space of a sub-environment.</p>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="gymnasium.vector.VectorEnv.single_observation_space">
<span class="sig-prename descclassname"><span class="pre">VectorEnv.</span></span><span class="sig-name descname"><span class="pre">single_observation_space</span></span><em class="property"><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="pre">gym.Space</span></em><a class="headerlink" href="#gymnasium.vector.VectorEnv.single_observation_space" title="Link to this definition"></a></dt>
<dd><p>The observation space of a sub-environment.</p>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="gymnasium.vector.VectorEnv.spec">
<span class="sig-prename descclassname"><span class="pre">VectorEnv.</span></span><span class="sig-name descname"><span class="pre">spec</span></span><em class="property"><span class="p"><span class="pre">:</span></span><span class="w"> </span><a class="reference internal" href="../registry/#gymnasium.envs.registration.EnvSpec" title="gymnasium.envs.registration.EnvSpec"><span class="pre">EnvSpec</span></a><span class="w"> </span><span class="p"><span class="pre">|</span></span><span class="w"> </span><span class="pre">None</span></em><em class="property"><span class="w"> </span><span class="p"><span class="pre">=</span></span><span class="w"> </span><span class="pre">None</span></em><a class="headerlink" href="#gymnasium.vector.VectorEnv.spec" title="Link to this definition"></a></dt>
<dd><p>The <code class="docutils literal notranslate"><span class="pre">EnvSpec</span></code> of the environment normally set during <a class="reference internal" href="../registry/#gymnasium.make_vec" title="gymnasium.make_vec"><code class="xref py py-meth docutils literal notranslate"><span class="pre">gymnasium.make_vec()</span></code></a></p>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="gymnasium.vector.VectorEnv.metadata">
<span class="sig-prename descclassname"><span class="pre">VectorEnv.</span></span><span class="sig-name descname"><span class="pre">metadata</span></span><em class="property"><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="pre">dict</span><span class="p"><span class="pre">[</span></span><span class="pre">str</span><span class="p"><span class="pre">,</span></span><span class="w"> </span><span class="pre">Any</span><span class="p"><span class="pre">]</span></span></em><em class="property"><span class="w"> </span><span class="p"><span class="pre">=</span></span><span class="w"> </span><span class="pre">{}</span></em><a class="headerlink" href="#gymnasium.vector.VectorEnv.metadata" title="Link to this definition"></a></dt>
<dd><p>The metadata of the environment containing rendering modes, rendering fps, etc</p>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="gymnasium.vector.VectorEnv.render_mode">
<span class="sig-prename descclassname"><span class="pre">VectorEnv.</span></span><span class="sig-name descname"><span class="pre">render_mode</span></span><em class="property"><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="pre">str</span><span class="w"> </span><span class="p"><span class="pre">|</span></span><span class="w"> </span><span class="pre">None</span></em><em class="property"><span class="w"> </span><span class="p"><span class="pre">=</span></span><span class="w"> </span><span class="pre">None</span></em><a class="headerlink" href="#gymnasium.vector.VectorEnv.render_mode" title="Link to this definition"></a></dt>
<dd><p>The render mode of the environment which should follow similar specifications to <cite>Env.render_mode</cite>.</p>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="gymnasium.vector.VectorEnv.closed">
<span class="sig-prename descclassname"><span class="pre">VectorEnv.</span></span><span class="sig-name descname"><span class="pre">closed</span></span><em class="property"><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="pre">bool</span></em><em class="property"><span class="w"> </span><span class="p"><span class="pre">=</span></span><span class="w"> </span><span class="pre">False</span></em><a class="headerlink" href="#gymnasium.vector.VectorEnv.closed" title="Link to this definition"></a></dt>
<dd><p>If the vector environment has been closed already.</p>
</dd></dl>
</section>
<section id="additional-methods">
<h3>Additional Methods<a class="headerlink" href="#additional-methods" title="Link to this heading"></a></h3>
<dl class="py property">
<dt class="sig sig-object py" id="gymnasium.vector.VectorEnv.unwrapped">
<em class="property"><span class="pre">property</span><span class="w"> </span></em><span class="sig-prename descclassname"><span class="pre">VectorEnv.</span></span><span class="sig-name descname"><span class="pre">unwrapped</span></span><a class="headerlink" href="#gymnasium.vector.VectorEnv.unwrapped" title="Link to this definition"></a></dt>
<dd><p>Return the base environment.</p>
</dd></dl>
<dl class="py property">
<dt class="sig sig-object py" id="gymnasium.vector.VectorEnv.np_random">
<em class="property"><span class="pre">property</span><span class="w"> </span></em><span class="sig-prename descclassname"><span class="pre">VectorEnv.</span></span><span class="sig-name descname"><span class="pre">np_random</span></span><em class="property"><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="pre">Generator</span></em><a class="headerlink" href="#gymnasium.vector.VectorEnv.np_random" title="Link to this definition"></a></dt>
<dd><p>Returns the environments internal <code class="xref py py-attr docutils literal notranslate"><span class="pre">_np_random</span></code> that if not set will initialise with a random seed.</p>
<dl class="field-list simple">
<dt class="field-odd">Returns<span class="colon">:</span></dt>
<dd class="field-odd"><p><strong>Instances of `np.random.Generator`</strong></p>
</dd>
</dl>
</dd></dl>
<dl class="py property">
<dt class="sig sig-object py" id="gymnasium.vector.VectorEnv.np_random_seed">
<em class="property"><span class="pre">property</span><span class="w"> </span></em><span class="sig-prename descclassname"><span class="pre">VectorEnv.</span></span><span class="sig-name descname"><span class="pre">np_random_seed</span></span><em class="property"><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="pre">int</span><span class="w"> </span><span class="p"><span class="pre">|</span></span><span class="w"> </span><span class="pre">None</span></em><a class="headerlink" href="#gymnasium.vector.VectorEnv.np_random_seed" title="Link to this definition"></a></dt>
<dd><p>Returns the environments internal <code class="xref py py-attr docutils literal notranslate"><span class="pre">_np_random_seed</span></code> that if not set will first initialise with a random int as seed.</p>
<p>If <a class="reference internal" href="#gymnasium.vector.VectorEnv.np_random_seed" title="gymnasium.vector.VectorEnv.np_random_seed"><code class="xref py py-attr docutils literal notranslate"><span class="pre">np_random_seed</span></code></a> was set directly instead of through <a class="reference internal" href="#gymnasium.vector.VectorEnv.reset" title="gymnasium.vector.VectorEnv.reset"><code class="xref py py-meth docutils literal notranslate"><span class="pre">reset()</span></code></a> or <code class="xref py py-meth docutils literal notranslate"><span class="pre">set_np_random_through_seed()</span></code>,
the seed will take the value -1.</p>
<dl class="field-list simple">
<dt class="field-odd">Returns<span class="colon">:</span></dt>
<dd class="field-odd"><p><strong>int</strong> the seed of the current <cite>np_random</cite> or -1, if the seed of the rng is unknown</p>
</dd>
</dl>
</dd></dl>
</section>
</section>
<section id="making-vector-environments">
<h2>Making Vector Environments<a class="headerlink" href="#making-vector-environments" title="Link to this heading"></a></h2>
<p>To create vector environments, gymnasium provides <a class="reference internal" href="../registry/#gymnasium.make_vec" title="gymnasium.make_vec"><code class="xref py py-func docutils literal notranslate"><span class="pre">gymnasium.make_vec()</span></code></a> as an equivalent function to <a class="reference internal" href="../registry/#gymnasium.make" title="gymnasium.make"><code class="xref py py-func docutils literal notranslate"><span class="pre">gymnasium.make()</span></code></a>.</p>
</section>
</section>
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<ul>
<li><a class="reference internal" href="#">Vectorize</a><ul>
<li><a class="reference internal" href="#gymnasium-vector-vectorenv">Gymnasium.vector.VectorEnv</a><ul>
<li><a class="reference internal" href="#gymnasium.vector.VectorEnv"><code class="docutils literal notranslate"><span class="pre">VectorEnv</span></code></a></li>
<li><a class="reference internal" href="#methods">Methods</a><ul>
<li><a class="reference internal" href="#gymnasium.vector.VectorEnv.step"><code class="docutils literal notranslate"><span class="pre">VectorEnv.step()</span></code></a></li>
<li><a class="reference internal" href="#gymnasium.vector.VectorEnv.reset"><code class="docutils literal notranslate"><span class="pre">VectorEnv.reset()</span></code></a></li>
<li><a class="reference internal" href="#gymnasium.vector.VectorEnv.render"><code class="docutils literal notranslate"><span class="pre">VectorEnv.render()</span></code></a></li>
<li><a class="reference internal" href="#gymnasium.vector.VectorEnv.close"><code class="docutils literal notranslate"><span class="pre">VectorEnv.close()</span></code></a></li>
</ul>
</li>
<li><a class="reference internal" href="#attributes">Attributes</a><ul>
<li><a class="reference internal" href="#gymnasium.vector.VectorEnv.num_envs"><code class="docutils literal notranslate"><span class="pre">VectorEnv.num_envs</span></code></a></li>
<li><a class="reference internal" href="#gymnasium.vector.VectorEnv.action_space"><code class="docutils literal notranslate"><span class="pre">VectorEnv.action_space</span></code></a></li>
<li><a class="reference internal" href="#gymnasium.vector.VectorEnv.observation_space"><code class="docutils literal notranslate"><span class="pre">VectorEnv.observation_space</span></code></a></li>
<li><a class="reference internal" href="#gymnasium.vector.VectorEnv.single_action_space"><code class="docutils literal notranslate"><span class="pre">VectorEnv.single_action_space</span></code></a></li>
<li><a class="reference internal" href="#gymnasium.vector.VectorEnv.single_observation_space"><code class="docutils literal notranslate"><span class="pre">VectorEnv.single_observation_space</span></code></a></li>
<li><a class="reference internal" href="#gymnasium.vector.VectorEnv.spec"><code class="docutils literal notranslate"><span class="pre">VectorEnv.spec</span></code></a></li>
<li><a class="reference internal" href="#gymnasium.vector.VectorEnv.metadata"><code class="docutils literal notranslate"><span class="pre">VectorEnv.metadata</span></code></a></li>
<li><a class="reference internal" href="#gymnasium.vector.VectorEnv.render_mode"><code class="docutils literal notranslate"><span class="pre">VectorEnv.render_mode</span></code></a></li>
<li><a class="reference internal" href="#gymnasium.vector.VectorEnv.closed"><code class="docutils literal notranslate"><span class="pre">VectorEnv.closed</span></code></a></li>
</ul>
</li>
<li><a class="reference internal" href="#additional-methods">Additional Methods</a><ul>
<li><a class="reference internal" href="#gymnasium.vector.VectorEnv.unwrapped"><code class="docutils literal notranslate"><span class="pre">VectorEnv.unwrapped</span></code></a></li>
<li><a class="reference internal" href="#gymnasium.vector.VectorEnv.np_random"><code class="docutils literal notranslate"><span class="pre">VectorEnv.np_random</span></code></a></li>
<li><a class="reference internal" href="#gymnasium.vector.VectorEnv.np_random_seed"><code class="docutils literal notranslate"><span class="pre">VectorEnv.np_random_seed</span></code></a></li>
</ul>
</li>
</ul>
</li>
<li><a class="reference internal" href="#making-vector-environments">Making Vector Environments</a></li>
</ul>
</li>
</ul>
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acceptBtn.addEventListener("click", () => {
localStorage.setItem("acceptedCookieAlert", true);
boxElem.remove();
enableGtag();
});
containerElem.appendChild(declineBtn);
containerElem.appendChild(acceptBtn);
boxElem.appendChild(containerElem);
document.body.appendChild(boxElem);
} else if (localStorage.getItem("acceptedCookieAlert") === "true") {
enableGtag();
}
})()
</script>
<script src="../../_static/documentation_options.js?v=25d39d6f"></script>
<script src="../../_static/doctools.js?v=9a2dae69"></script>
<script src="../../_static/sphinx_highlight.js?v=dc90522c"></script>
<script src="../../_static/scripts/furo.js?v=7660844c"></script>
<script>
const createProjectsList = (projects, displayImages) => {
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 (displayImages) {
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);
}
return ulElem;
}
// Create menu with Farama projects by using the API at farama.org/api/projects.json
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 = {
"Core Projects": [],
"Mature Projects": {
"Documentation": [],
"Repositories": [],
},
"Incubating Projects": {
"Documentation": [],
"Repositories": [],
},
"Foundation": [
{
name: "About",
link: "https://farama.org/about"
},
{
name: "Standards",
link: "https://farama.org/project_standards",
},
{
name: "Donate",
link: "https://farama.org/donations"
}
]
}
// Categorize projects
Object.keys(jsonResponse).forEach(key => {
projectJson = jsonResponse[key];
if (projectJson.website !== null) {
projectJson.link = projectJson.website;
} else {
projectJson.link = projectJson.github;
}
if (projectJson.type === "core") {
sections["Core Projects"].push(projectJson)
} else if (projectJson.type == "mature") {
if (projectJson.website !== null) {
sections["Mature Projects"]["Documentation"].push(projectJson)
} else {
sections["Mature Projects"]["Repositories"].push(projectJson)
}
} else {
if (projectJson.website !== null) {
sections["Incubating Projects"]["Documentation"].push(projectJson)
} else {
sections["Incubating Projects"]["Repositories"].push(projectJson)
}
}
})
const menuContainer = document.querySelector(".farama-header-menu__body");
Object.keys(sections).forEach((key, i) => {
const sectionElem = Object.assign(
document.createElement('div'), {
className:'farama-header-menu__section',
}
)
sectionElem.appendChild(Object.assign(document.createElement('span'),
{
className:'farama-header-menu__section-title' ,
innerText: key
}
))
// is not a list
if (sections[key].constructor !== Array) {
const subSections = sections[key];
const subSectionContainerElem = Object.assign(
document.createElement('div'), {
className:'farama-header-menu__subsections-container',
style: 'display: flex'
}
)
Object.keys(subSections).forEach((subKey, i) => {
const subSectionElem = Object.assign(
document.createElement('div'), {
className:'farama-header-menu__subsection',
}
)
subSectionElem.appendChild(Object.assign(document.createElement('span'),
{
className:'farama-header-menu__subsection-title' ,
innerText: subKey
}
))
const ulElem = createProjectsList(subSections[subKey], key !== 'Foundation');
subSectionElem.appendChild(ulElem);
subSectionContainerElem.appendChild(subSectionElem);
})
sectionElem.appendChild(subSectionContainerElem);
} else {
const projects = sections[key];
const ulElem = createProjectsList(projects, true);
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>