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<article role="main">
<section id="fundamental-spaces">
<h1>Fundamental Spaces<a class="headerlink" href="#fundamental-spaces" title="Permalink to this heading">#</a></h1>
<section id="box">
<h2>Box<a class="headerlink" href="#box" title="Permalink to this heading">#</a></h2>
<dl class="py class">
<dt class="sig sig-object py" id="gymnasium.spaces.Box">
<em class="property"><span class="pre">class</span><span class="w"> </span></em><span class="sig-prename descclassname"><span class="pre">gymnasium.spaces.</span></span><span class="sig-name descname"><span class="pre">Box</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">low</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">SupportsFloat</span><span class="w"> </span><span class="p"><span class="pre">|</span></span><span class="w"> </span><span class="pre">NDArray</span><span class="p"><span class="pre">[</span></span><span class="pre">Any</span><span class="p"><span class="pre">]</span></span></span></em>, <em class="sig-param"><span class="n"><span class="pre">high</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">SupportsFloat</span><span class="w"> </span><span class="p"><span class="pre">|</span></span><span class="w"> </span><span class="pre">NDArray</span><span class="p"><span class="pre">[</span></span><span class="pre">Any</span><span class="p"><span class="pre">]</span></span></span></em>, <em class="sig-param"><span class="n"><span class="pre">shape</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><a class="reference internal" href="../composite/#gymnasium.spaces.Sequence" title="gymnasium.spaces.Sequence"><span class="pre">Sequence</span></a><span class="p"><span class="pre">[</span></span><span class="pre">int</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>, <em class="sig-param"><span class="n"><span class="pre">dtype</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">type</span><span class="p"><span class="pre">[</span></span><span class="pre">np.floating</span><span class="p"><span class="pre">[</span></span><span class="pre">Any</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">type</span><span class="p"><span class="pre">[</span></span><span class="pre">np.integer</span><span class="p"><span class="pre">[</span></span><span class="pre">Any</span><span class="p"><span class="pre">]</span></span><span class="p"><span class="pre">]</span></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">np.float32</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">np.random.Generator</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><a class="headerlink" href="#gymnasium.spaces.Box" title="Permalink to this definition">#</a></dt>
<dd><p><span class="math notranslate nohighlight">\([a, \infty)\)</span>, or <span class="math notranslate nohighlight">\((-\infty, \infty)\)</span>.</p>
<p>There are two common use cases:</p>
<ul>
<li><p>Identical bound for each dimension:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="gp">&gt;&gt;&gt; </span><span class="n">Box</span><span class="p">(</span><span class="n">low</span><span class="o">=-</span><span class="mf">1.0</span><span class="p">,</span> <span class="n">high</span><span class="o">=</span><span class="mf">2.0</span><span class="p">,</span> <span class="n">shape</span><span class="o">=</span><span class="p">(</span><span class="mi">3</span><span class="p">,</span> <span class="mi">4</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">float32</span><span class="p">)</span>
<span class="go">Box(-1.0, 2.0, (3, 4), float32)</span>
</pre></div>
</div>
</li>
<li><p>Independent bound for each dimension:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="gp">&gt;&gt;&gt; </span><span class="n">Box</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">array</span><span class="p">([</span><span class="o">-</span><span class="mf">1.0</span><span class="p">,</span> <span class="o">-</span><span class="mf">2.0</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">array</span><span class="p">([</span><span class="mf">2.0</span><span class="p">,</span> <span class="mf">4.0</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">float32</span><span class="p">)</span>
<span class="go">Box([-1. -2.], [2. 4.], (2,), float32)</span>
</pre></div>
</div>
</li>
</ul>
<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>low</strong> (<em>SupportsFloat</em><em> | </em><em>np.ndarray</em>) Lower bounds of the intervals. If integer, must be at least <code class="docutils literal notranslate"><span class="pre">-2**63</span></code>.</p></li>
<li><p><strong>high</strong> (<em>SupportsFloat</em><em> | </em><em>np.ndarray</em><em>]</em>) Upper bounds of the intervals. If integer, must be at most <code class="docutils literal notranslate"><span class="pre">2**63</span> <span class="pre">-</span> <span class="pre">2</span></code>.</p></li>
<li><p><strong>shape</strong> (<em>Optional</em><em>[</em><a class="reference internal" href="../composite/#gymnasium.spaces.Sequence" title="gymnasium.spaces.Sequence"><em>Sequence</em></a><em>[</em><em>int</em><em>]</em><em>]</em>) The shape is inferred from the shape of <cite>low</cite> or <cite>high</cite> <cite>np.ndarray`s with
`low</cite> and <cite>high</cite> scalars defaulting to a shape of (1,)</p></li>
<li><p><strong>dtype</strong> The dtype of the elements of the space. If this is an integer type, the <a class="reference internal" href="#gymnasium.spaces.Box" title="gymnasium.spaces.Box"><code class="xref py py-class docutils literal notranslate"><span class="pre">Box</span></code></a> is essentially a discrete space.</p></li>
<li><p><strong>seed</strong> Optionally, you can use this argument to seed the RNG that is used to sample from the space.</p></li>
</ul>
</dd>
<dt class="field-even">Raises<span class="colon">:</span></dt>
<dd class="field-even"><p><strong>ValueError</strong> If no shape information is provided (shape is None, low is None and high is None) then a
value error is raised.</p>
</dd>
</dl>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="gymnasium.spaces.Box.sample">
<span class="sig-prename descclassname"><span class="pre">Box.</span></span><span class="sig-name descname"><span class="pre">sample</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">mask</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><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">ndarray</span><span class="p"><span class="pre">[</span></span><span class="pre">Any</span><span class="p"><span class="pre">,</span></span><span class="w"> </span><span class="pre">dtype</span><span class="p"><span class="pre">[</span></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="headerlink" href="#gymnasium.spaces.Box.sample" title="Permalink to this definition">#</a></dt>
<dd><p>Generates a single random sample inside the Box.</p>
<p>In creating a sample of the box, each coordinate is sampled (independently) from a distribution
that is chosen according to the form of the interval:</p>
<ul class="simple">
<li><p><span class="math notranslate nohighlight">\([a, b]\)</span> : uniform distribution</p></li>
<li><p><span class="math notranslate nohighlight">\([a, \infty)\)</span> : shifted exponential distribution</p></li>
<li><p><span class="math notranslate nohighlight">\((-\infty, b]\)</span> : shifted negative exponential distribution</p></li>
<li><p><span class="math notranslate nohighlight">\((-\infty, \infty)\)</span> : normal distribution</p></li>
</ul>
<dl class="field-list simple">
<dt class="field-odd">Parameters<span class="colon">:</span></dt>
<dd class="field-odd"><p><strong>mask</strong> A mask for sampling values from the Box space, currently unsupported.</p>
</dd>
<dt class="field-even">Returns<span class="colon">:</span></dt>
<dd class="field-even"><p><strong>A sampled value from the Box</strong></p>
</dd>
</dl>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="gymnasium.spaces.Box.seed">
<span class="sig-prename descclassname"><span class="pre">Box.</span></span><span class="sig-name descname"><span class="pre">seed</span></span><span class="sig-paren">(</span><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><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">&#x2192;</span> <span class="sig-return-typehint"><span class="pre">list</span><span class="p"><span class="pre">[</span></span><span class="pre">int</span><span class="p"><span class="pre">]</span></span></span></span><a class="headerlink" href="#gymnasium.spaces.Box.seed" title="Permalink to this definition">#</a></dt>
<dd><p>Seed the PRNG of this space and possibly the PRNGs of subspaces.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="gymnasium.spaces.Box.is_bounded">
<span class="sig-prename descclassname"><span class="pre">Box.</span></span><span class="sig-name descname"><span class="pre">is_bounded</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">manner</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">str</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">'both'</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">bool</span></span></span><a class="headerlink" href="#gymnasium.spaces.Box.is_bounded" title="Permalink to this definition">#</a></dt>
<dd><p>Checks whether the box is bounded in some sense.</p>
<dl class="field-list simple">
<dt class="field-odd">Parameters<span class="colon">:</span></dt>
<dd class="field-odd"><p><strong>manner</strong> (<em>str</em>) One of <code class="docutils literal notranslate"><span class="pre">&quot;both&quot;</span></code>, <code class="docutils literal notranslate"><span class="pre">&quot;below&quot;</span></code>, <code class="docutils literal notranslate"><span class="pre">&quot;above&quot;</span></code>.</p>
</dd>
<dt class="field-even">Returns<span class="colon">:</span></dt>
<dd class="field-even"><p><strong>If the space is bounded</strong></p>
</dd>
<dt class="field-odd">Raises<span class="colon">:</span></dt>
<dd class="field-odd"><p><strong>ValueError</strong> If <cite>manner</cite> is neither <code class="docutils literal notranslate"><span class="pre">&quot;both&quot;</span></code> nor <code class="docutils literal notranslate"><span class="pre">&quot;below&quot;</span></code> or <code class="docutils literal notranslate"><span class="pre">&quot;above&quot;</span></code></p>
</dd>
</dl>
</dd></dl>
</section>
<section id="discrete">
<h2>Discrete<a class="headerlink" href="#discrete" title="Permalink to this heading">#</a></h2>
<dl class="py class">
<dt class="sig sig-object py" id="gymnasium.spaces.Discrete">
<em class="property"><span class="pre">class</span><span class="w"> </span></em><span class="sig-prename descclassname"><span class="pre">gymnasium.spaces.</span></span><span class="sig-name descname"><span class="pre">Discrete</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">n</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">np.integer</span><span class="p"><span class="pre">[</span></span><span class="pre">Any</span><span class="p"><span class="pre">]</span></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">np.random.Generator</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">start</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">np.integer</span><span class="p"><span class="pre">[</span></span><span class="pre">Any</span><span class="p"><span class="pre">]</span></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">0</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#gymnasium.spaces.Discrete" title="Permalink to this definition">#</a></dt>
<dd><p>A space consisting of finitely many elements.</p>
<p>This class represents a finite subset of integers, more specifically a set of the form <span class="math notranslate nohighlight">\(\{ a, a+1, \dots, a+n-1 \}\)</span>.</p>
<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">from</span> <span class="nn">gymnasium.spaces</span> <span class="kn">import</span> <span class="n">Discrete</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">observation_space</span> <span class="o">=</span> <span class="n">Discrete</span><span class="p">(</span><span class="mi">2</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="c1"># {0, 1}</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">observation_space</span><span class="o">.</span><span class="n">sample</span><span class="p">()</span>
<span class="go">0</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">observation_space</span> <span class="o">=</span> <span class="n">Discrete</span><span class="p">(</span><span class="mi">3</span><span class="p">,</span> <span class="n">start</span><span class="o">=-</span><span class="mi">1</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="c1"># {-1, 0, 1}</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">observation_space</span><span class="o">.</span><span class="n">sample</span><span class="p">()</span>
<span class="go">-1</span>
</pre></div>
</div>
<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>n</strong> (<em>int</em>) The number of elements of this space.</p></li>
<li><p><strong>seed</strong> Optionally, you can use this argument to seed the RNG that is used to sample from the <code class="docutils literal notranslate"><span class="pre">Dict</span></code> space.</p></li>
<li><p><strong>start</strong> (<em>int</em>) The smallest element of this space.</p></li>
</ul>
</dd>
</dl>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="gymnasium.spaces.Discrete.sample">
<span class="sig-prename descclassname"><span class="pre">Discrete.</span></span><span class="sig-name descname"><span class="pre">sample</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">mask</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">MaskNDArray</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">np.int64</span></span></span><a class="headerlink" href="#gymnasium.spaces.Discrete.sample" title="Permalink to this definition">#</a></dt>
<dd><p>Generates a single random sample from this space.</p>
<p>A sample will be chosen uniformly at random with the mask if provided</p>
<dl class="field-list simple">
<dt class="field-odd">Parameters<span class="colon">:</span></dt>
<dd class="field-odd"><p><strong>mask</strong> An optional mask for if an action can be selected.
Expected <cite>np.ndarray</cite> of shape <cite>(n,)</cite> and dtype <cite>np.int8</cite> where <cite>1</cite> represents valid actions and <cite>0</cite> invalid / infeasible actions.
If there are no possible actions (i.e. <cite>np.all(mask == 0)</cite>) then <cite>space.start</cite> will be returned.</p>
</dd>
<dt class="field-even">Returns<span class="colon">:</span></dt>
<dd class="field-even"><p><strong>A sampled integer from the space</strong></p>
</dd>
</dl>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="gymnasium.spaces.Discrete.seed">
<span class="sig-prename descclassname"><span class="pre">Discrete.</span></span><span class="sig-name descname"><span class="pre">seed</span></span><span class="sig-paren">(</span><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><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">&#x2192;</span> <span class="sig-return-typehint"><span class="pre">list</span><span class="p"><span class="pre">[</span></span><span class="pre">int</span><span class="p"><span class="pre">]</span></span></span></span><a class="headerlink" href="#gymnasium.spaces.Discrete.seed" title="Permalink to this definition">#</a></dt>
<dd><p>Seed the PRNG of this space and possibly the PRNGs of subspaces.</p>
</dd></dl>
</section>
<section id="multibinary">
<h2>MultiBinary<a class="headerlink" href="#multibinary" title="Permalink to this heading">#</a></h2>
<dl class="py class">
<dt class="sig sig-object py" id="gymnasium.spaces.MultiBinary">
<em class="property"><span class="pre">class</span><span class="w"> </span></em><span class="sig-prename descclassname"><span class="pre">gymnasium.spaces.</span></span><span class="sig-name descname"><span class="pre">MultiBinary</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">n</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">NDArray</span><span class="p"><span class="pre">[</span></span><span class="pre">np.integer</span><span class="p"><span class="pre">[</span></span><span class="pre">Any</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><a class="reference internal" href="../composite/#gymnasium.spaces.Sequence" title="gymnasium.spaces.Sequence"><span class="pre">Sequence</span></a><span class="p"><span class="pre">[</span></span><span class="pre">int</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">int</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">np.random.Generator</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><a class="headerlink" href="#gymnasium.spaces.MultiBinary" title="Permalink to this definition">#</a></dt>
<dd><p>An n-shape binary space.</p>
<p>Elements of this space are binary arrays of a shape that is fixed during construction.</p>
<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">from</span> <span class="nn">gymnasium.spaces</span> <span class="kn">import</span> <span class="n">MultiBinary</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">observation_space</span> <span class="o">=</span> <span class="n">MultiBinary</span><span class="p">(</span><span class="mi">5</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">observation_space</span><span class="o">.</span><span class="n">sample</span><span class="p">()</span>
<span class="go">array([1, 0, 1, 0, 1], dtype=int8)</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">observation_space</span> <span class="o">=</span> <span class="n">MultiBinary</span><span class="p">([</span><span class="mi">3</span><span class="p">,</span> <span class="mi">2</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">observation_space</span><span class="o">.</span><span class="n">sample</span><span class="p">()</span>
<span class="go">array([[1, 0],</span>
<span class="go"> [1, 0],</span>
<span class="go"> [1, 1]], dtype=int8)</span>
</pre></div>
</div>
<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>n</strong> This will fix the shape of elements of the space. It can either be an integer (if the space is flat)
or some sort of sequence (tuple, list or np.ndarray) if there are multiple axes.</p></li>
<li><p><strong>seed</strong> Optionally, you can use this argument to seed the RNG that is used to sample from the space.</p></li>
</ul>
</dd>
</dl>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="gymnasium.spaces.MultiBinary.sample">
<span class="sig-prename descclassname"><span class="pre">MultiBinary.</span></span><span class="sig-name descname"><span class="pre">sample</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">mask</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">MaskNDArray</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">NDArray</span><span class="p"><span class="pre">[</span></span><span class="pre">np.int8</span><span class="p"><span class="pre">]</span></span></span></span><a class="headerlink" href="#gymnasium.spaces.MultiBinary.sample" title="Permalink to this definition">#</a></dt>
<dd><p>Generates a single random sample from this space.</p>
<p>A sample is drawn by independent, fair coin tosses (one toss per binary variable of the space).</p>
<dl class="field-list simple">
<dt class="field-odd">Parameters<span class="colon">:</span></dt>
<dd class="field-odd"><p><strong>mask</strong> An optional np.ndarray to mask samples with expected shape of <code class="docutils literal notranslate"><span class="pre">space.shape</span></code>.
For mask == 0 then the samples will be 0 and mask == 1 then random samples will be generated.
The expected mask shape is the space shape and mask dtype is <cite>np.int8</cite>.</p>
</dd>
<dt class="field-even">Returns<span class="colon">:</span></dt>
<dd class="field-even"><p><strong>Sampled values from space</strong></p>
</dd>
</dl>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="gymnasium.spaces.MultiBinary.seed">
<span class="sig-prename descclassname"><span class="pre">MultiBinary.</span></span><span class="sig-name descname"><span class="pre">seed</span></span><span class="sig-paren">(</span><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><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">&#x2192;</span> <span class="sig-return-typehint"><span class="pre">list</span><span class="p"><span class="pre">[</span></span><span class="pre">int</span><span class="p"><span class="pre">]</span></span></span></span><a class="headerlink" href="#gymnasium.spaces.MultiBinary.seed" title="Permalink to this definition">#</a></dt>
<dd><p>Seed the PRNG of this space and possibly the PRNGs of subspaces.</p>
</dd></dl>
</section>
<section id="multidiscrete">
<h2>MultiDiscrete<a class="headerlink" href="#multidiscrete" title="Permalink to this heading">#</a></h2>
<dl class="py class">
<dt class="sig sig-object py" id="gymnasium.spaces.MultiDiscrete">
<em class="property"><span class="pre">class</span><span class="w"> </span></em><span class="sig-prename descclassname"><span class="pre">gymnasium.spaces.</span></span><span class="sig-name descname"><span class="pre">MultiDiscrete</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">nvec</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">NDArray</span><span class="p"><span class="pre">[</span></span><span class="pre">np.integer</span><span class="p"><span class="pre">[</span></span><span class="pre">Any</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">list</span><span class="p"><span class="pre">[</span></span><span class="pre">int</span><span class="p"><span class="pre">]</span></span></span></em>, <em class="sig-param"><span class="n"><span class="pre">dtype</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">str</span><span class="w"> </span><span class="p"><span class="pre">|</span></span><span class="w"> </span><span class="pre">type</span><span class="p"><span class="pre">[</span></span><span class="pre">np.integer</span><span class="p"><span class="pre">[</span></span><span class="pre">Any</span><span class="p"><span class="pre">]</span></span><span class="p"><span class="pre">]</span></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">np.int64</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">np.random.Generator</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><a class="headerlink" href="#gymnasium.spaces.MultiDiscrete" title="Permalink to this definition">#</a></dt>
<dd><p>This represents the cartesian product of arbitrary <a class="reference internal" href="#gymnasium.spaces.Discrete" title="gymnasium.spaces.Discrete"><code class="xref py py-class docutils literal notranslate"><span class="pre">Discrete</span></code></a> spaces.</p>
<p>It is useful to represent game controllers or keyboards where each key can be represented as a discrete action space.</p>
<div class="admonition note">
<p class="admonition-title">Note</p>
<p>Some environment wrappers assume a value of 0 always represents the NOOP action.</p>
</div>
<p>e.g. Nintendo Game Controller - Can be conceptualized as 3 discrete action spaces:</p>
<ol class="arabic simple">
<li><p>Arrow Keys: Discrete 5 - NOOP[0], UP[1], RIGHT[2], DOWN[3], LEFT[4] - params: min: 0, max: 4</p></li>
<li><p>Button A: Discrete 2 - NOOP[0], Pressed[1] - params: min: 0, max: 1</p></li>
<li><p>Button B: Discrete 2 - NOOP[0], Pressed[1] - params: min: 0, max: 1</p></li>
</ol>
<p>It can be initialized as <code class="docutils literal notranslate"><span class="pre">MultiDiscrete([</span> <span class="pre">5,</span> <span class="pre">2,</span> <span class="pre">2</span> <span class="pre">])</span></code> such that a sample might be <code class="docutils literal notranslate"><span class="pre">array([3,</span> <span class="pre">1,</span> <span class="pre">0])</span></code>.</p>
<p>Although this feature is rarely used, <a class="reference internal" href="#gymnasium.spaces.MultiDiscrete" title="gymnasium.spaces.MultiDiscrete"><code class="xref py py-class docutils literal notranslate"><span class="pre">MultiDiscrete</span></code></a> spaces may also have several axes
if <code class="docutils literal notranslate"><span class="pre">nvec</span></code> has several axes:</p>
<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">from</span> <span class="nn">gymnasium.spaces</span> <span class="kn">import</span> <span class="n">MultiDiscrete</span>
<span class="gp">&gt;&gt;&gt; </span><span class="kn">import</span> <span class="nn">numpy</span> <span class="k">as</span> <span class="nn">np</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">observation_space</span> <span class="o">=</span> <span class="n">MultiDiscrete</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">2</span><span class="p">],</span> <span class="p">[</span><span class="mi">3</span><span class="p">,</span> <span class="mi">4</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">observation_space</span><span class="o">.</span><span class="n">sample</span><span class="p">()</span>
<span class="go">array([[0, 0],</span>
<span class="go"> [2, 2]])</span>
</pre></div>
</div>
<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>nvec</strong> vector of counts of each categorical variable. This will usually be a list of integers. However,
you may also pass a more complicated numpy array if youd like the space to have several axes.</p></li>
<li><p><strong>dtype</strong> This should be some kind of integer type.</p></li>
<li><p><strong>seed</strong> Optionally, you can use this argument to seed the RNG that is used to sample from the space.</p></li>
</ul>
</dd>
</dl>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="gymnasium.spaces.MultiDiscrete.sample">
<span class="sig-prename descclassname"><span class="pre">MultiDiscrete.</span></span><span class="sig-name descname"><span class="pre">sample</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">mask</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">tuple</span><span class="p"><span class="pre">[</span></span><span class="pre">MaskNDArray</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 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">NDArray</span><span class="p"><span class="pre">[</span></span><span class="pre">np.integer</span><span class="p"><span class="pre">[</span></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="headerlink" href="#gymnasium.spaces.MultiDiscrete.sample" title="Permalink to this definition">#</a></dt>
<dd><p>Generates a single random sample this space.</p>
<dl class="field-list simple">
<dt class="field-odd">Parameters<span class="colon">:</span></dt>
<dd class="field-odd"><p><strong>mask</strong> An optional mask for multi-discrete, expects tuples with a <cite>np.ndarray</cite> mask in the position of each
action with shape <cite>(n,)</cite> where <cite>n</cite> is the number of actions and <cite>dtype=np.int8</cite>.
Only mask values == 1 are possible to sample unless all mask values for an action are 0 then the default action 0 is sampled.</p>
</dd>
<dt class="field-even">Returns<span class="colon">:</span></dt>
<dd class="field-even"><p><strong>An `np.ndarray` of shape `space.shape`</strong></p>
</dd>
</dl>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="gymnasium.spaces.MultiDiscrete.seed">
<span class="sig-prename descclassname"><span class="pre">MultiDiscrete.</span></span><span class="sig-name descname"><span class="pre">seed</span></span><span class="sig-paren">(</span><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><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">&#x2192;</span> <span class="sig-return-typehint"><span class="pre">list</span><span class="p"><span class="pre">[</span></span><span class="pre">int</span><span class="p"><span class="pre">]</span></span></span></span><a class="headerlink" href="#gymnasium.spaces.MultiDiscrete.seed" title="Permalink to this definition">#</a></dt>
<dd><p>Seed the PRNG of this space and possibly the PRNGs of subspaces.</p>
</dd></dl>
</section>
<section id="text">
<h2>Text<a class="headerlink" href="#text" title="Permalink to this heading">#</a></h2>
<dl class="py class">
<dt class="sig sig-object py" id="gymnasium.spaces.Text">
<em class="property"><span class="pre">class</span><span class="w"> </span></em><span class="sig-prename descclassname"><span class="pre">gymnasium.spaces.</span></span><span class="sig-name descname"><span class="pre">Text</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">max_length</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">int</span></span></em>, <em class="sig-param"><span class="o"><span class="pre">*</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">min_length</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">int</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">1</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">charset</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">frozenset</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="p"><span class="pre">|</span></span><span class="w"> </span><span class="pre">str</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">alphanumeric</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">np.random.Generator</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><a class="headerlink" href="#gymnasium.spaces.Text" title="Permalink to this definition">#</a></dt>
<dd><p>A space representing a string comprised of characters from a given charset.</p>
<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">from</span> <span class="nn">gymnasium.spaces</span> <span class="kn">import</span> <span class="n">Text</span>
<span class="gp">&gt;&gt;&gt; </span><span class="c1"># {&quot;&quot;, &quot;B5&quot;, &quot;hello&quot;, ...}</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">Text</span><span class="p">(</span><span class="mi">5</span><span class="p">)</span>
<span class="go">Text(1, 5, characters=0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz)</span>
<span class="gp">&gt;&gt;&gt; </span><span class="c1"># {&quot;0&quot;, &quot;42&quot;, &quot;0123456789&quot;, ...}</span>
<span class="gp">&gt;&gt;&gt; </span><span class="kn">import</span> <span class="nn">string</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">Text</span><span class="p">(</span><span class="n">min_length</span> <span class="o">=</span> <span class="mi">1</span><span class="p">,</span>
<span class="gp">... </span> <span class="n">max_length</span> <span class="o">=</span> <span class="mi">10</span><span class="p">,</span>
<span class="gp">... </span> <span class="n">charset</span> <span class="o">=</span> <span class="n">string</span><span class="o">.</span><span class="n">digits</span><span class="p">)</span>
<span class="go">Text(1, 10, characters=0123456789)</span>
</pre></div>
</div>
<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>min_length</strong> (<em>int</em>) Minimum text length (in characters). Defaults to 1 to prevent empty strings.</p></li>
<li><p><strong>max_length</strong> (<em>int</em>) Maximum text length (in characters).</p></li>
<li><p><strong>charset</strong> (<em>Union</em><em>[</em><em>set</em><em>]</em><em>, </em><em>str</em>) Character set, defaults to the lower and upper english alphabet plus latin digits.</p></li>
<li><p><strong>seed</strong> The seed for sampling from the space.</p></li>
</ul>
</dd>
</dl>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="gymnasium.spaces.Text.sample">
<span class="sig-prename descclassname"><span class="pre">Text.</span></span><span class="sig-name descname"><span class="pre">sample</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">mask</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">None</span><span class="w"> </span><span class="p"><span class="pre">|</span></span><span class="w"> </span><span class="pre">tuple</span><span class="p"><span class="pre">[</span></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><span class="p"><span class="pre">,</span></span><span class="w"> </span><span class="pre">NDArray</span><span class="p"><span class="pre">[</span></span><span class="pre">np.int8</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 class="p"><span class="pre">]</span></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">str</span></span></span><a class="headerlink" href="#gymnasium.spaces.Text.sample" title="Permalink to this definition">#</a></dt>
<dd><p>Generates a single random sample from this space with by default a random length between <cite>min_length</cite> and <cite>max_length</cite> and sampled from the <cite>charset</cite>.</p>
<dl class="field-list simple">
<dt class="field-odd">Parameters<span class="colon">:</span></dt>
<dd class="field-odd"><p><strong>mask</strong> An optional tuples of length and mask for the text.
The length is expected to be between the <cite>min_length</cite> and <cite>max_length</cite> otherwise a random integer between <cite>min_length</cite> and <cite>max_length</cite> is selected.
For the mask, we expect a numpy array of length of the charset passed with <cite>dtype == np.int8</cite>.
If the charlist mask is all zero then an empty string is returned no matter the <cite>min_length</cite></p>
</dd>
<dt class="field-even">Returns<span class="colon">:</span></dt>
<dd class="field-even"><p><strong>A sampled string from the space</strong></p>
</dd>
</dl>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="gymnasium.spaces.Text.seed">
<span class="sig-prename descclassname"><span class="pre">Text.</span></span><span class="sig-name descname"><span class="pre">seed</span></span><span class="sig-paren">(</span><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><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">&#x2192;</span> <span class="sig-return-typehint"><span class="pre">list</span><span class="p"><span class="pre">[</span></span><span class="pre">int</span><span class="p"><span class="pre">]</span></span></span></span><a class="headerlink" href="#gymnasium.spaces.Text.seed" title="Permalink to this definition">#</a></dt>
<dd><p>Seed the PRNG of this space and possibly the PRNGs of subspaces.</p>
</dd></dl>
</section>
</section>
</article>
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<ul>
<li><a class="reference internal" href="#">Fundamental Spaces</a><ul>
<li><a class="reference internal" href="#box">Box</a><ul>
<li><a class="reference internal" href="#gymnasium.spaces.Box"><code class="docutils literal notranslate"><span class="pre">Box</span></code></a><ul>
<li><a class="reference internal" href="#gymnasium.spaces.Box.sample"><code class="docutils literal notranslate"><span class="pre">Box.sample()</span></code></a></li>
<li><a class="reference internal" href="#gymnasium.spaces.Box.seed"><code class="docutils literal notranslate"><span class="pre">Box.seed()</span></code></a></li>
<li><a class="reference internal" href="#gymnasium.spaces.Box.is_bounded"><code class="docutils literal notranslate"><span class="pre">Box.is_bounded()</span></code></a></li>
</ul>
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</ul>
</li>
<li><a class="reference internal" href="#discrete">Discrete</a><ul>
<li><a class="reference internal" href="#gymnasium.spaces.Discrete"><code class="docutils literal notranslate"><span class="pre">Discrete</span></code></a><ul>
<li><a class="reference internal" href="#gymnasium.spaces.Discrete.sample"><code class="docutils literal notranslate"><span class="pre">Discrete.sample()</span></code></a></li>
<li><a class="reference internal" href="#gymnasium.spaces.Discrete.seed"><code class="docutils literal notranslate"><span class="pre">Discrete.seed()</span></code></a></li>
</ul>
</li>
</ul>
</li>
<li><a class="reference internal" href="#multibinary">MultiBinary</a><ul>
<li><a class="reference internal" href="#gymnasium.spaces.MultiBinary"><code class="docutils literal notranslate"><span class="pre">MultiBinary</span></code></a><ul>
<li><a class="reference internal" href="#gymnasium.spaces.MultiBinary.sample"><code class="docutils literal notranslate"><span class="pre">MultiBinary.sample()</span></code></a></li>
<li><a class="reference internal" href="#gymnasium.spaces.MultiBinary.seed"><code class="docutils literal notranslate"><span class="pre">MultiBinary.seed()</span></code></a></li>
</ul>
</li>
</ul>
</li>
<li><a class="reference internal" href="#multidiscrete">MultiDiscrete</a><ul>
<li><a class="reference internal" href="#gymnasium.spaces.MultiDiscrete"><code class="docutils literal notranslate"><span class="pre">MultiDiscrete</span></code></a><ul>
<li><a class="reference internal" href="#gymnasium.spaces.MultiDiscrete.sample"><code class="docutils literal notranslate"><span class="pre">MultiDiscrete.sample()</span></code></a></li>
<li><a class="reference internal" href="#gymnasium.spaces.MultiDiscrete.seed"><code class="docutils literal notranslate"><span class="pre">MultiDiscrete.seed()</span></code></a></li>
</ul>
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<li><a class="reference internal" href="#text">Text</a><ul>
<li><a class="reference internal" href="#gymnasium.spaces.Text"><code class="docutils literal notranslate"><span class="pre">Text</span></code></a><ul>
<li><a class="reference internal" href="#gymnasium.spaces.Text.sample"><code class="docutils literal notranslate"><span class="pre">Text.sample()</span></code></a></li>
<li><a class="reference internal" href="#gymnasium.spaces.Text.seed"><code class="docutils literal notranslate"><span class="pre">Text.seed()</span></code></a></li>
</ul>
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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>