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<section id="numpy-bitwise-and">
<h1>numpy.bitwise_and<a class="headerlink" href="#numpy-bitwise-and" title="Link to this heading">#</a></h1>
<dl class="py data">
<dt class="sig sig-object py" id="numpy.bitwise_and">
<span class="sig-prename descclassname"><span class="pre">numpy.</span></span><span class="sig-name descname"><span class="pre">bitwise_and</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">x1</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">x2</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">/</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">out=None</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">*</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">where=True</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">casting='same_kind'</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">order='K'</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">dtype=None</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">subok=True</span></span></em><span class="optional">[</span>, <em class="sig-param"><span class="n"><span class="pre">signature</span></span></em><span class="optional">]</span><span class="sig-paren">)</span><em class="property"><span class="w"> </span><span class="p"><span class="pre">=</span></span><span class="w"> </span><span class="pre"><ufunc</span> <span class="pre">'bitwise_and'></span></em><a class="headerlink" href="#numpy.bitwise_and" title="Link to this definition">#</a></dt>
<dd><p>Compute the bit-wise AND of two arrays element-wise.</p>
<p>Computes the bit-wise AND of the underlying binary representation of
the integers in the input arrays. This ufunc implements the C/Python
operator <code class="docutils literal notranslate"><span class="pre">&</span></code>.</p>
<dl class="field-list simple">
<dt class="field-odd">Parameters<span class="colon">:</span></dt>
<dd class="field-odd"><dl class="simple">
<dt><strong>x1, x2</strong><span class="classifier">array_like</span></dt><dd><p>Only integer and boolean types are handled.
If <code class="docutils literal notranslate"><span class="pre">x1.shape</span> <span class="pre">!=</span> <span class="pre">x2.shape</span></code>, they must be broadcastable to a common
shape (which becomes the shape of the output).</p>
</dd>
<dt><strong>out</strong><span class="classifier">ndarray, None, or tuple of ndarray and None, optional</span></dt><dd><p>A location into which the result is stored. If provided, it must have
a shape that the inputs broadcast to. If not provided or None,
a freshly-allocated array is returned. A tuple (possible only as a
keyword argument) must have length equal to the number of outputs.</p>
</dd>
<dt><strong>where</strong><span class="classifier">array_like, optional</span></dt><dd><p>This condition is broadcast over the input. At locations where the
condition is True, the <em class="xref py py-obj">out</em> array will be set to the ufunc result.
Elsewhere, the <em class="xref py py-obj">out</em> array will retain its original value.
Note that if an uninitialized <em class="xref py py-obj">out</em> array is created via the default
<code class="docutils literal notranslate"><span class="pre">out=None</span></code>, locations within it where the condition is False will
remain uninitialized.</p>
</dd>
<dt><strong>**kwargs</strong></dt><dd><p>For other keyword-only arguments, see the
<a class="reference internal" href="../ufuncs.html#ufuncs-kwargs"><span class="std std-ref">ufunc docs</span></a>.</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 or scalar</span></dt><dd><p>Result.
This is a scalar if both <em class="xref py py-obj">x1</em> and <em class="xref py py-obj">x2</em> are scalars.</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.logical_and.html#numpy.logical_and" title="numpy.logical_and"><code class="xref py py-obj docutils literal notranslate"><span class="pre">logical_and</span></code></a></dt><dd></dd>
<dt><a class="reference internal" href="numpy.bitwise_or.html#numpy.bitwise_or" title="numpy.bitwise_or"><code class="xref py py-obj docutils literal notranslate"><span class="pre">bitwise_or</span></code></a></dt><dd></dd>
<dt><a class="reference internal" href="numpy.bitwise_xor.html#numpy.bitwise_xor" title="numpy.bitwise_xor"><code class="xref py py-obj docutils literal notranslate"><span class="pre">bitwise_xor</span></code></a></dt><dd></dd>
<dt><a class="reference internal" href="numpy.binary_repr.html#numpy.binary_repr" title="numpy.binary_repr"><code class="xref py py-obj docutils literal notranslate"><span class="pre">binary_repr</span></code></a></dt><dd><p>Return the binary representation of the input number as a string.</p>
</dd>
</dl>
</div>
<p class="rubric">Examples</p>
<div class="try_examples_outer_container docutils container" id="1f103829-2bf2-41d6-88fc-4f6666a27d0d">
<div class="try_examples_button_container"><button class="try_examples_button" onclick="window.tryExamplesShowIframe('1f103829-2bf2-41d6-88fc-4f6666a27d0d','7048fc0f-5bac-4536-9641-4a5a2ce8adb7','96d228aa-feb1-4247-8c76-abc37bacf0bb','../../lite/tree/../notebooks/index.html?path=a6276f7f_6bc0_4112_84d9_b3278cb48194.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="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>
</pre></div>
</div>
<p>The number 13 is represented by <code class="docutils literal notranslate"><span class="pre">00001101</span></code>. Likewise, 17 is
represented by <code class="docutils literal notranslate"><span class="pre">00010001</span></code>. The bit-wise AND of 13 and 17 is
therefore <code class="docutils literal notranslate"><span class="pre">000000001</span></code>, or 1:</p>
<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">bitwise_and</span><span class="p">(</span><span class="mi">13</span><span class="p">,</span> <span class="mi">17</span><span class="p">)</span>
<span class="go">1</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">bitwise_and</span><span class="p">(</span><span class="mi">14</span><span class="p">,</span> <span class="mi">13</span><span class="p">)</span>
<span class="go">12</span>
<span class="gp">>>> </span><span class="n">np</span><span class="o">.</span><span class="n">binary_repr</span><span class="p">(</span><span class="mi">12</span><span class="p">)</span>
<span class="go">'1100'</span>
<span class="gp">>>> </span><span class="n">np</span><span class="o">.</span><span class="n">bitwise_and</span><span class="p">([</span><span class="mi">14</span><span class="p">,</span><span class="mi">3</span><span class="p">],</span> <span class="mi">13</span><span class="p">)</span>
<span class="go">array([12, 1])</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">bitwise_and</span><span class="p">([</span><span class="mi">11</span><span class="p">,</span><span class="mi">7</span><span class="p">],</span> <span class="p">[</span><span class="mi">4</span><span class="p">,</span><span class="mi">25</span><span class="p">])</span>
<span class="go">array([0, 1])</span>
<span class="gp">>>> </span><span class="n">np</span><span class="o">.</span><span class="n">bitwise_and</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">2</span><span class="p">,</span><span class="mi">5</span><span class="p">,</span><span class="mi">255</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">3</span><span class="p">,</span><span class="mi">14</span><span class="p">,</span><span class="mi">16</span><span class="p">]))</span>
<span class="go">array([ 2, 4, 16])</span>
<span class="gp">>>> </span><span class="n">np</span><span class="o">.</span><span class="n">bitwise_and</span><span class="p">([</span><span class="kc">True</span><span class="p">,</span> <span class="kc">True</span><span class="p">],</span> <span class="p">[</span><span class="kc">False</span><span class="p">,</span> <span class="kc">True</span><span class="p">])</span>
<span class="go">array([False, True])</span>
</pre></div>
</div>
<p>The <code class="docutils literal notranslate"><span class="pre">&</span></code> operator can be used as a shorthand for <code class="docutils literal notranslate"><span class="pre">np.bitwise_and</span></code> on
ndarrays.</p>
<div class="doctest highlight-default notranslate"><div class="highlight"><pre><span></span><span class="gp">>>> </span><span class="n">x1</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">2</span><span class="p">,</span> <span class="mi">5</span><span class="p">,</span> <span class="mi">255</span><span class="p">])</span>
<span class="gp">>>> </span><span class="n">x2</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">3</span><span class="p">,</span> <span class="mi">14</span><span class="p">,</span> <span class="mi">16</span><span class="p">])</span>
<span class="gp">>>> </span><span class="n">x1</span> <span class="o">&</span> <span class="n">x2</span>
<span class="go">array([ 2, 4, 16])</span>
</pre></div>
</div>
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