{"id":7331,"date":"2021-01-06T14:22:42","date_gmt":"2021-01-06T08:52:42","guid":{"rendered":"http:\/\/www.pythonpool.com\/?p=7331"},"modified":"2023-12-30T17:27:30","modified_gmt":"2023-12-30T11:57:30","slug":"python-negate-boolean","status":"publish","type":"post","link":"https:\/\/www.pythonpool.com\/python-negate-boolean\/","title":{"rendered":"Is it Possible to Negate a Boolean in Python? [Answered]"},"content":{"rendered":"\n<p>Before letting you know about the exact answer of Is it Possible to Negate a Boolean in Python? You must know what is the meaning of negating (negate) in layman&#8217;s language. So, as you may already know that a<strong> Boolean Expression<\/strong> consists of two values <strong>True<\/strong> and <strong>False.<\/strong> <strong> By, negating a boolean expression in Python means that the True value will become False and the False value will become True.<\/strong><\/p>\n\n\n\n<p>Therefore, we can conclude that negating a Boolean expression or a value in Python meaning to&nbsp;evaluate the exact opposite of the returned Boolean value. Now, I am assuming that you get a clear cut idea about what is negating a Boolean expression in Python. So, let&#8217;s move to our question which is, Is it Possible to Negate a Boolean in Python? in the next section.<\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_74 counter-hierarchy ez-toc-counter ez-toc-transparent ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #990303;color:#990303\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #990303;color:#990303\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.pythonpool.com\/python-negate-boolean\/#Is_it_Possible_to_Negate_a_Boolean_in_Python\" >Is it Possible to Negate a Boolean in Python?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.pythonpool.com\/python-negate-boolean\/#Ways_to_Negate_a_Boolean_in_Python\" >Ways to Negate a Boolean in Python<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.pythonpool.com\/python-negate-boolean\/#Negating_a_Boolean_in_Python_Using_the_not_Operator\" >Negating a Boolean in Python Using the not Operator<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.pythonpool.com\/python-negate-boolean\/#Using_the_operatornot_Function_to_Negate_a_Boolean_Expression_in_Python\" >Using the operator.not_() Function to Negate a Boolean Expression in Python<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.pythonpool.com\/python-negate-boolean\/#Numpy_Array_and_to_Negate_Boolean_in_Python\" >Numpy Array and ~ to Negate Boolean in Python<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.pythonpool.com\/python-negate-boolean\/#Using_numpybitwise_not_to_Negate_Boolean_Values_in_Python\" >Using numpy.bitwise_not() to Negate Boolean Values in Python<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.pythonpool.com\/python-negate-boolean\/#Numpy_invert_to_Negate_the_Boolean_Value\" >Numpy&nbsp;invert to Negate the Boolean Value<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.pythonpool.com\/python-negate-boolean\/#Using_Numpy_Logical_Not\" >Using Numpy&nbsp;Logical Not<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.pythonpool.com\/python-negate-boolean\/#Conclusion\" >Conclusion<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.pythonpool.com\/python-negate-boolean\/#Trending_Python_Articles\" >Trending Python Articles<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\" id=\"h-is-it-possible-to-negate-a-boolean-in-python\"><span class=\"ez-toc-section\" id=\"Is_it_Possible_to_Negate_a_Boolean_in_Python\"><\/span>Is it Possible to Negate a Boolean in Python?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong>The short answer is Yes,<\/strong> it possible to negate a Boolean in Python. The best thing about the python programming language is there are several ways to achieve the same goal, and all of them are quite easy and to the point. There are basically <strong>six ways<\/strong> to negate a Boolean in Python. Let&#8217;s dig a little more and see what these methods are and how you can use them in the best possible way.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-ways-to-negate-a-boolean-in-python\"><span class=\"ez-toc-section\" id=\"Ways_to_Negate_a_Boolean_in_Python\"><\/span>Ways to Negate a Boolean in Python<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Using the not operator<\/li>\n\n\n\n<li>Using the operator.not_() function<\/li>\n\n\n\n<li>Numpy array and ~<\/li>\n\n\n\n<li>Using numpy.bitwise_not()<\/li>\n\n\n\n<li>Numpy&nbsp;invert<\/li>\n\n\n\n<li>Numpy&nbsp;logical&nbsp;not<\/li>\n<\/ol>\n\n\n\n<p>Consequently now we will jump directly to perceive the working and examples of the above five methods to negate a Boolean.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-negating-a-boolean-in-python-using-the-not-operator\"><span class=\"ez-toc-section\" id=\"Negating_a_Boolean_in_Python_Using_the_not_Operator\"><\/span>Negating a Boolean in Python Using the not Operator<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>If you don&#8217;t know about not keyword, let me explain that the not&nbsp;keyword is a logical operator in Python. The specialty of not operator is it returns the opposite value of the statement. Meaning the <strong>not<\/strong> operator&#8217;s return value will be True if the statements are <a href=\"http:\/\/www.pythonpool.com\/not-in-python\/\" target=\"_blank\" rel=\"noreferrer noopener\">not<\/a> <strong>True<\/strong>; otherwise, it will return <strong>False.<\/strong><\/p>\n\n\n\n<p>Let&#8217;s see the working with an example.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-example-using-not-operator\">Example Using not operator:<\/h3>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: python; title: ; notranslate\" title=\"\">\nvalue = True\nprint(value)\nprint (not value)\n<\/pre><\/div>\n\n\n<h4 class=\"wp-block-heading\" id=\"h-output\"><strong>Output:<\/strong><\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>True\nFalse<\/code><\/pre>\n\n\n\n<p>The above example is straightforward in negating a value or expression. As you can see, we have assigned True to a variable value. After that, we printed it, and our output was <strong>True<\/strong> as expected.<\/p>\n\n\n\n<p>But at the next line, we used not operator too inside the print function. So, this time, we get the output as <strong>False<\/strong>. Hence, we have successfully negated a Boolean expression with the help of not operator in Python.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-using-the-operator-not-function-to-negate-a-boolean-expression-in-python\"><span class=\"ez-toc-section\" id=\"Using_the_operatornot_Function_to_Negate_a_Boolean_Expression_in_Python\"><\/span>Using the operator.not_() Function to Negate a Boolean Expression in Python<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>We can also negate the Boolean expression using a function named <strong>operator.not_().<\/strong> This function is a library function that is present in the operator module in Python. To use the operator.not_() method in our code snippet, we need to import the operator module in our program.<\/p>\n\n\n\n<p>It is similar to the not operator, which we already covered in the above section. This method can be really beneficial when a function is needed instead of a keyword. It can also be used quite efficiently<em> with higher-order functions such as\u00a0<code>map<\/code>\u00a0or\u00a0<code>filter<\/code>.<\/em><\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: python; title: ; notranslate\" title=\"\">\nimport operator\n\nprint(&quot;operator.not_(True) will return:&quot;, operator.not_(True))\nprint(&quot;operator.not_(False) will return:&quot;, operator.not_(False))\n<\/pre><\/div>\n\n\n<h4 class=\"wp-block-heading\" id=\"h-output-1\"><strong>Output:<\/strong><\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>operator.not_(True) will return: False\noperator.not_(False) will return: True<\/code><\/pre>\n\n\n\n<p>In the above example, we have observed that we can easily negate a <strong>Boolean <\/strong>expression in Python using the operator.not_() method. This method&#8217;s return type is&nbsp;<strong>bool<\/strong>; it <strong>returns&nbsp;True<\/strong>&nbsp;if&nbsp;the value&nbsp;is zero or false;&nbsp;otherwise, it <strong>returns False<\/strong>.<\/p>\n\n\n\n<p class=\"has-white-color has-vivid-green-cyan-background-color has-text-color has-background\" style=\"font-size:18px\"><strong>Note: We need to import the operator module to use this function.<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-numpy-array-and-to-negate-boolean-in-python\"><span class=\"ez-toc-section\" id=\"Numpy_Array_and_to_Negate_Boolean_in_Python\"><\/span>Numpy Array and ~ to Negate Boolean in Python<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>By using the numpy array library and the bitwise <a href=\"http:\/\/www.pythonpool.com\/python-tilde\/\" target=\"_blank\" rel=\"noopener\">operator &#8216;<strong>~&#8217;<\/strong> pronounced as a tilde<\/a>. We can easily negate a Boolean <a href=\"http:\/\/www.pythonpool.com\/sentinel-value-python\/\" target=\"_blank\" rel=\"noopener\">value in Python<\/a>. The tilde operator takes a one-bit operand and returns its complement. If the operand is 1, it returns 0, and vice-versa.<\/p>\n\n\n\n<p>Let&#8217; see how numpy array and <strong>(~)<\/strong> tilde work together and negate a Boolean in Python through an example.<\/p>\n\n\n\n<p class=\"has-white-color has-vivid-green-cyan-background-color has-text-color has-background\" style=\"font-size:18px\"><strong>Note: Here, 0 can be <\/strong>counterbalanced as <strong>False,<\/strong> and <strong>1<\/strong> can be equalized as <strong>True.<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-example-using-bitwise-operator-tilde-to-negate-a-boolean\">Example Using ~ Bitwise operator tilde to negate a boolean<\/h3>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: python; title: ; notranslate\" title=\"\">\nimport numpy as np\nx = np.array(&#x5B;True, False])\nx = ~ x\nprint(x)\n<\/pre><\/div>\n\n\n<h4 class=\"wp-block-heading\" id=\"h-output-2\"><strong>Output:<\/strong><\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>&#91;False  True]<\/code><\/pre>\n\n\n\n<p>The above example&#8217;s importance is that we need to use the ~ Bitwise operator with the numpy module. In the above example,\u00a0we created a <strong>numpy array<\/strong>\u00a0named <strong>(x)<\/strong> with boolean values True and False. Subsequently, with ~ Bitwise operator, we negated the boolean values in the numpy array. Hence, True becomes False, and False becomes True.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-using-numpy-bitwise-not-to-negate-boolean-values-in-python\"><span class=\"ez-toc-section\" id=\"Using_numpybitwise_not_to_Negate_Boolean_Values_in_Python\"><\/span>Using numpy.bitwise_not() to Negate Boolean Values in Python<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>NumPy is a very vast and powerful Python module. It provides us with several functions, one of which is\u00a0<strong>Numpy.bitwise_not()<\/strong>. <strong>numpy.bitwise_not()<\/strong>\u00a0function is used to Compute the bit-wise\u00a0<strong>NOT<\/strong> or bit-wise <strong>inversion<\/strong> element-wise\u00a0of two arrays element-wise. This function computes the bitwise <strong>NOT<\/strong> of the underlying binary representation of the input arrays.<\/p>\n\n\n\n<p>Let&#8217;s see how numpy array and <strong>numpy.bitwise_not()<\/strong> works together and negates a Boolean in Python through an example.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-example-using-numpy-bitwise-not-function-to-negate-a-boolean\">Example: Using Numpy.bitwise_not function to negate a boolean<\/h3>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: python; title: ; notranslate\" title=\"\">\nimport numpy as np\nx = np.array(&#x5B;True, False])\nx = np.bitwise_not(x)\nprint(x)\n<\/pre><\/div>\n\n\n<h4 class=\"wp-block-heading\" id=\"h-output-3\"><strong>Output:<\/strong><\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>&#91;False  True]<\/code><\/pre>\n\n\n\n<p>The above example uses the numpy module. So, make sure that numpy is already installed. Here, like in the case of the Bitwise <strong>tilde<\/strong> operator, we initialized a numpy array <strong>x<\/strong> with two <strong>Boolean<\/strong> values, <strong>True<\/strong> and <strong>False<\/strong>. After that, we negated the boolean values with the help of the function <strong>np.bitwise_not<\/strong>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-numpy-invert-to-negate-the-boolean-value\"><span class=\"ez-toc-section\" id=\"Numpy_invert_to_Negate_the_Boolean_Value\"><\/span>Numpy&nbsp;invert to Negate the Boolean Value<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Numpy is one of the most popular libraries in Python. It can be used for scientific and numeric computing that lets you work with multi-dimensional arrays far more efficiently. The numpy arrays are densely packed arrays of <a href=\"https:\/\/en.wikipedia.org\/wiki\/Homogeneous_function\" target=\"_blank\" rel=\"noreferrer noopener\">homogeneous<\/a> type.\u00a0<\/p>\n\n\n\n<p>Numpy.invert() function is utilized to interrogate the bit-wise Inversion of an array element-wise. It calculates the bit-wise NOT of the underlying binary representation of the Boolean from the input arrays.<\/p>\n\n\n\n<p>Let&#8217;s see how numpy array and <strong>numpy.invert<\/strong> works together and negate a Boolean in Python through an example.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-example-using-numpy-invert\">Example Using Numpy invert<\/h3>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: python; title: ; notranslate\" title=\"\">\nimport numpy as np\nx = np.array(&#x5B;True, False])\nx = np.invert(x)\nprint(x)\n<\/pre><\/div>\n\n\n<h4 class=\"wp-block-heading\" id=\"h-output-4\"><strong>Output:<\/strong><\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>&#91;False  True]<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-using-numpy-logical-not\"><span class=\"ez-toc-section\" id=\"Using_Numpy_Logical_Not\"><\/span>Using Numpy&nbsp;Logical Not<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Coming to our last way to negate a Boolean, we have Numpy Logical Not. The Numpy logical does <strong>Not<\/strong> compute the truth value of NOT x element-wise. The logical Not operator returns an array with Boolean results of NOT element-wise.<\/p>\n\n\n\n<p>Let&#8217;s see how a numpy array and <strong>numpy logical not<\/strong> work together and negate a Boolean in Python through an example.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-example-using-numpy-logical-not\">Example Using Numpy Logical Not<\/h3>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: python; title: ; notranslate\" title=\"\">\nimport numpy as np\nx = np.array(&#x5B;True, False])\nx = np.logical_not(x)\nprint(x)\n<\/pre><\/div>\n\n\n<h4 class=\"wp-block-heading\" id=\"h-output-5\"><strong>Output:<\/strong><\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>&#91;False  True]<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-conclusion\"><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>Conclusion<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>In conclusion, I can say I have tried to blend all six ways to Negate a Boolean in Python. The best way to negate depends upon the requirement of the user or the program. If you are using the Numpy module, then you have four ways. And if you don&#8217;t want to use numpy, you can still use the two available methods. In the future, if I find more ways, I will update this article ASAP.<\/p>\n\n\n\n<p>However, if you have any doubts or questions, do let me know in the comment section below. I will try to help you as soon as possible.<\/p>\n\n\n\n<p><strong><em>Happy Pythoning!<\/em><\/strong><\/p>\n\n\n<div class=\"monsterinsights-widget-popular-posts monsterinsights-widget-popular-posts-delta monsterinsights-popular-posts-styled monsterinsights-widget-popular-posts-columns-2\"><h2 class=\"monsterinsights-widget-popular-posts-widget-title\"><span class=\"ez-toc-section\" id=\"Trending_Python_Articles\"><\/span>Trending Python Articles<span class=\"ez-toc-section-end\"><\/span><\/h2><ul class=\"monsterinsights-widget-popular-posts-list\"><li ><a href=\"https:\/\/www.pythonpool.com\/fixed-typeerror-cant-compare-datetime-datetime-to-datetime-date\/\"><div class=\"monsterinsights-widget-popular-posts-image\"><img decoding=\"async\" src=\"https:\/\/www.pythonpool.com\/wp-content\/uploads\/2024\/01\/typeerror-cant-compare-datetime.datetime-to-datetime.date_-300x157.webp\" srcset=\" 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href=\"https:\/\/www.pythonpool.com\/fixed-typeerror-type-numpy-ndarray-doesnt-define-__round__-method\/\"><div class=\"monsterinsights-widget-popular-posts-image\"><img decoding=\"async\" src=\"https:\/\/www.pythonpool.com\/wp-content\/uploads\/2024\/01\/Fixed-typeerror-type-numpy.ndarray-doesnt-define-__round__-method-300x157.webp\" srcset=\" https:\/\/www.pythonpool.com\/wp-content\/uploads\/2024\/01\/Fixed-typeerror-type-numpy.ndarray-doesnt-define-__round__-method-300x157.webp 300w, https:\/\/www.pythonpool.com\/wp-content\/uploads\/2024\/01\/Fixed-typeerror-type-numpy.ndarray-doesnt-define-__round__-method-1024x536.webp 1024w, https:\/\/www.pythonpool.com\/wp-content\/uploads\/2024\/01\/Fixed-typeerror-type-numpy.ndarray-doesnt-define-__round__-method-768x402.webp 768w, https:\/\/www.pythonpool.com\/wp-content\/uploads\/2024\/01\/Fixed-typeerror-type-numpy.ndarray-doesnt-define-__round__-method.webp 1200w \" alt=\"[Fixed] typeerror: type numpy.ndarray doesn&#8217;t define __round__ method\" \/><\/div><div class=\"monsterinsights-widget-popular-posts-text\"><span class=\"monsterinsights-widget-popular-posts-title\" >[Fixed] typeerror: type numpy.ndarray doesn&#8217;t define __round__ method<\/span><div class=\"monsterinsights-widget-popular-posts-meta\" ><span class=\"monsterinsights-widget-popular-posts-author\">by Namrata Gulati<\/span><span>&#9679;<\/span><span class=\"monsterinsights-widget-popular-posts-date\">January 2, 2024<\/span><\/div><\/div><\/a><\/li><\/ul><\/div><p><\/p>","protected":false},"excerpt":{"rendered":"<p>Before letting you know about the exact answer of Is it Possible to Negate a Boolean in Python? 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