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<title>numpy.random.RandomState.permutation — NumPy v2.3.dev0 Manual</title>
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<section id="numpy-random-randomstate-permutation">
<h1>numpy.random.RandomState.permutation<a class="headerlink" href="#numpy-random-randomstate-permutation" title="Link to this heading">#</a></h1>
<p>method</p>
<dl class="py method">
<dt class="sig sig-object py" id="numpy.random.RandomState.permutation">
<span class="sig-prename descclassname"><span class="pre">random.RandomState.</span></span><span class="sig-name descname"><span class="pre">permutation</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">x</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#numpy.random.RandomState.permutation" title="Link to this definition">#</a></dt>
<dd><p>Randomly permute a sequence, or return a permuted range.</p>
<p>If <em class="xref py py-obj">x</em> is a multi-dimensional array, it is only shuffled along its
first index.</p>
<div class="admonition note">
<p class="admonition-title">Note</p>
<p>New code should use the
<a class="reference internal" href="numpy.random.Generator.permutation.html#numpy.random.Generator.permutation" title="numpy.random.Generator.permutation"><code class="xref py py-obj docutils literal notranslate"><span class="pre">permutation</span></code></a>
method of a <a class="reference internal" href="../generator.html#numpy.random.Generator" title="numpy.random.Generator"><code class="xref py py-obj docutils literal notranslate"><span class="pre">Generator</span></code></a> instance instead;
please see the <a class="reference internal" href="../index.html#random-quick-start"><span class="std std-ref">Quick start</span></a>.</p>
</div>
<dl class="field-list simple">
<dt class="field-odd">Parameters<span class="colon">:</span></dt>
<dd class="field-odd"><dl class="simple">
<dt><strong>x</strong><span class="classifier">int or array_like</span></dt><dd><p>If <em class="xref py py-obj">x</em> is an integer, randomly permute <code class="docutils literal notranslate"><span class="pre">np.arange(x)</span></code>.
If <em class="xref py py-obj">x</em> is an array, make a copy and shuffle the elements
randomly.</p>
</dd>
</dl>
</dd>
<dt class="field-even">Returns<span class="colon">:</span></dt>
<dd class="field-even"><dl class="simple">
<dt><strong>out</strong><span class="classifier">ndarray</span></dt><dd><p>Permuted sequence or array range.</p>
</dd>
</dl>
</dd>
</dl>
<div class="admonition seealso">
<p class="admonition-title">See also</p>
<dl class="simple">
<dt><a class="reference internal" href="numpy.random.Generator.permutation.html#numpy.random.Generator.permutation" title="numpy.random.Generator.permutation"><code class="xref py py-obj docutils literal notranslate"><span class="pre">random.Generator.permutation</span></code></a></dt><dd><p>which should be used for new code.</p>
</dd>
</dl>
</div>
<p class="rubric">Examples</p>
<div class="try_examples_outer_container docutils container" id="7e05ef5a-3729-4eaa-b0a8-4d6b799c13d6">
<div class="try_examples_button_container"><button class="try_examples_button" onclick="window.tryExamplesShowIframe('7e05ef5a-3729-4eaa-b0a8-4d6b799c13d6','c5eb4648-49f5-444a-aefa-225ce1a9adeb','1e0d1516-71ad-4778-ac53-6a44d87417e5','../../../lite/tree/../notebooks/index.html?path=a8e3e82b_e1d8_485c_b8f9_3428c388fdc4.ipynb','None')">Try it in your browser!</button></div><div class="try_examples_content docutils container">
<div class="doctest highlight-default notranslate"><div class="highlight"><pre><span></span><span class="gp">>>> </span><span class="n">np</span><span class="o">.</span><span class="n">random</span><span class="o">.</span><span class="n">permutation</span><span class="p">(</span><span class="mi">10</span><span class="p">)</span>
<span class="go">array([1, 7, 4, 3, 0, 9, 2, 5, 8, 6]) # random</span>
</pre></div>
</div>
<div class="doctest highlight-default notranslate"><div class="highlight"><pre><span></span><span class="gp">>>> </span><span class="n">np</span><span class="o">.</span><span class="n">random</span><span class="o">.</span><span class="n">permutation</span><span class="p">([</span><span class="mi">1</span><span class="p">,</span> <span class="mi">4</span><span class="p">,</span> <span class="mi">9</span><span class="p">,</span> <span class="mi">12</span><span class="p">,</span> <span class="mi">15</span><span class="p">])</span>
<span class="go">array([15, 1, 9, 4, 12]) # random</span>
</pre></div>
</div>
<div class="doctest highlight-default notranslate"><div class="highlight"><pre><span></span><span class="gp">>>> </span><span class="n">arr</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">arange</span><span class="p">(</span><span class="mi">9</span><span class="p">)</span><span class="o">.</span><span class="n">reshape</span><span class="p">((</span><span class="mi">3</span><span class="p">,</span> <span class="mi">3</span><span class="p">))</span>
<span class="gp">>>> </span><span class="n">np</span><span class="o">.</span><span class="n">random</span><span class="o">.</span><span class="n">permutation</span><span class="p">(</span><span class="n">arr</span><span class="p">)</span>
<span class="go">array([[6, 7, 8], # random</span>
<span class="go"> [0, 1, 2],</span>
<span class="go"> [3, 4, 5]])</span>
</pre></div>
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