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<p class="caption" role="heading"><span class="caption-text">Introduction</span></p>
<ul>
<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>
<li class="toctree-l1"><a class="reference internal" href="introduction/create_custom_env/">Create a Custom Environment</a></li>
<li class="toctree-l1"><a class="reference internal" href="introduction/record_agent/">Recording Agents</a></li>
<li class="toctree-l1"><a class="reference internal" href="introduction/speed_up_env/">Speeding Up Training</a></li>
<li class="toctree-l1"><a class="reference internal" href="introduction/gym_compatibility/">Compatibility with Gym</a></li>
<li class="toctree-l1"><a class="reference internal" href="introduction/migration_guide/">Migration Guide - v0.21 to v1.0.0</a></li>
</ul>
<p class="caption" role="heading"><span class="caption-text">API</span></p>
<ul>
<li class="toctree-l1"><a class="reference internal" href="api/env/">Env</a></li>
<li class="toctree-l1"><a class="reference internal" href="api/registry/">Make and register</a></li>
<li class="toctree-l1 has-children"><a class="reference internal" href="api/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="api/spaces/fundamental/">Fundamental Spaces</a></li>
<li class="toctree-l2"><a class="reference internal" href="api/spaces/composite/">Composite Spaces</a></li>
<li class="toctree-l2"><a class="reference internal" href="api/spaces/utils/">Spaces Utils</a></li>
</ul>
</li>
<li class="toctree-l1 has-children"><a class="reference internal" href="api/wrappers/">Wrappers</a><input class="toctree-checkbox" id="toctree-checkbox-2" name="toctree-checkbox-2" role="switch" type="checkbox"/><label for="toctree-checkbox-2"><div class="visually-hidden">Toggle navigation of Wrappers</div><i class="icon"><svg><use href="#svg-arrow-right"></use></svg></i></label><ul>
<li class="toctree-l2"><a class="reference internal" href="api/wrappers/table/">List of Wrappers</a></li>
<li class="toctree-l2"><a class="reference internal" href="api/wrappers/misc_wrappers/">Misc Wrappers</a></li>
<li class="toctree-l2"><a class="reference internal" href="api/wrappers/action_wrappers/">Action Wrappers</a></li>
<li class="toctree-l2"><a class="reference internal" href="api/wrappers/observation_wrappers/">Observation Wrappers</a></li>
<li class="toctree-l2"><a class="reference internal" href="api/wrappers/reward_wrappers/">Reward Wrappers</a></li>
</ul>
</li>
<li class="toctree-l1 has-children"><a class="reference internal" href="api/vector/">Vectorize</a><input 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="api/vector/wrappers/">Wrappers</a></li>
<li class="toctree-l2"><a class="reference internal" href="api/vector/async_vector_env/">AsyncVectorEnv</a></li>
<li class="toctree-l2"><a class="reference internal" href="api/vector/sync_vector_env/">SyncVectorEnv</a></li>
<li class="toctree-l2"><a class="reference internal" href="api/vector/utils/">Utility functions</a></li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="api/utils/">Utility functions</a></li>
<li class="toctree-l1"><a class="reference internal" href="api/functional/">Functional Env</a></li>
</ul>
<p class="caption" role="heading"><span class="caption-text">Environments</span></p>
<ul>
<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>
</ul>
</li>
<li class="toctree-l1 has-children"><a class="reference internal" href="environments/box2d/">Box2D</a><input class="toctree-checkbox" id="toctree-checkbox-5" name="toctree-checkbox-5" role="switch" type="checkbox"/><label for="toctree-checkbox-5"><div class="visually-hidden">Toggle navigation of Box2D</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/box2d/lunar_lander/">Lunar Lander</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-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>
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<li class="toctree-l2"><a class="reference internal" href="environments/atari/breakout/">Breakout</a></li>
<li class="toctree-l2"><a class="reference internal" href="environments/atari/carnival/">Carnival</a></li>
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An API standard for reinforcement learning with a diverse collection of reference environments
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<p><strong>Gymnasium is a maintained fork of OpenAI’s Gym library.</strong> The Gymnasium interface is simple, pythonic, and capable of representing general RL problems, and has a <a class="reference internal" href="introduction/gym_compatibility/"><span class="doc std std-doc">compatibility wrapper</span></a> for old Gym environments:</p>
<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="kn">import</span> <span class="nn">gymnasium</span> <span class="k">as</span> <span class="nn">gym</span>
<span class="c1"># Initialise the environment</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">&quot;LunarLander-v3&quot;</span><span class="p">,</span> <span class="n">render_mode</span><span class="o">=</span><span class="s2">&quot;human&quot;</span><span class="p">)</span>
<span class="c1"># Reset the environment to generate the first observation</span>
<span class="n">observation</span><span class="p">,</span> <span class="n">info</span> <span class="o">=</span> <span class="n">env</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="k">for</span> <span class="n">_</span> <span class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="mi">1000</span><span class="p">):</span>
<span class="c1"># this is where you would insert your policy</span>
<span class="n">action</span> <span class="o">=</span> <span class="n">env</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="c1"># step (transition) through the environment with the action</span>
<span class="c1"># receiving the next observation, reward and if the episode has terminated or truncated</span>
<span class="n">observation</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> <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="c1"># If the episode has ended then we can reset to start a new episode</span>
<span class="k">if</span> <span class="n">terminated</span> <span class="ow">or</span> <span class="n">truncated</span><span class="p">:</span>
<span class="n">observation</span><span class="p">,</span> <span class="n">info</span> <span class="o">=</span> <span class="n">env</span><span class="o">.</span><span class="n">reset</span><span class="p">()</span>
<span class="n">env</span><span class="o">.</span><span class="n">close</span><span class="p">()</span>
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{
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>
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