{"id":6367,"date":"2023-10-30T11:29:12","date_gmt":"2023-10-30T05:59:12","guid":{"rendered":"https:\/\/python-programs.com\/?p=6367"},"modified":"2023-11-10T12:07:48","modified_gmt":"2023-11-10T06:37:48","slug":"python-if-statement","status":"publish","type":"post","link":"https:\/\/python-programs.com\/python-if-statement\/","title":{"rendered":"Python: If-Statement"},"content":{"rendered":"<p>In real life, there are times when we must make choices and decide what to do next based on those decisions. Similar scenarios occur in programming where we must make decisions and then execute the next block of code based on those decisions.<\/p>\n<h2>If Statement in Python<\/h2>\n<ul>\n<li><a href=\"#If_statement\">If statement<\/a><\/li>\n<li><a href=\"#Examples_of_if_statement\">Examples of if statement<\/a><\/li>\n<li><a href=\"#If_statement_with_multiple_conditions\">If statement with multiple conditions<\/a><\/li>\n<\/ul>\n<h3 id=\"If_statement\">1)If statement<\/h3>\n<p>The if statement is the simplest decision-making statement. It is used to determine whether or not a specific statement or block of statements will be executed, i.e. if a certain condition is valid, then a block of statements is executed, otherwise not.<\/p>\n<p><strong>Syntax:<\/strong><\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"python\">if condition:\r\n    statement 1\r\n    statement 2\r\n    statement 3<\/pre>\n<p>We don&#8217;t have the definition of brackets in Python to indicate the beginning and end of a block. Instead, it represents a block of indentation. After the \u201cif statement,\u201d for example, there are two other sentences with one degree of indent. It denotes the &#8220;if&#8221; statement&#8217;s block field. In Python, this set of statements in a block is known as a suite.<\/p>\n<p>The keyword \u201cif\u201d is often followed by a conditional expression that should evaluate to a bool value, i.e., True or False. If the condition is True, the interpreter executes the statements in the \u201cif\u201d suite, which are the code statements in the if-block.<\/p>\n<p>Python, as we know, uses indentation to define a block. As a result, the block inside an if statement will be found, as seen in the example below.<\/p>\n<pre>if condition:\r\n   statement1\r\nstatement2\r\n\r\n#If the condition is valid, the if block will only consider\r\n# statement1 to be within its block.\r\n<\/pre>\n<p><img loading=\"lazy\" class=\"wp-image-6359 aligncenter\" src=\"https:\/\/python-programs.com\/wp-content\/uploads\/2021\/05\/if.png\" alt=\"\" width=\"283\" height=\"513\" srcset=\"https:\/\/python-programs.com\/wp-content\/uploads\/2021\/05\/if.png 489w, https:\/\/python-programs.com\/wp-content\/uploads\/2021\/05\/if-166x300.png 166w\" sizes=\"(max-width: 283px) 100vw, 283px\" \/><\/p>\n<h3 id=\"Examples_of_if_statement\">2)Examples of if statement<\/h3>\n<p><strong>Example -1:<\/strong><\/p>\n<p><strong>IF statement is true<\/strong><\/p>\n<p><strong>Below is the implementation:<\/strong><\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"python\">height = 70\r\n# checking if the height is greater than 100 or not\r\nif (height &lt; 100):\r\n    print(\"height is less than 100\")\r\nelse:\r\n    print(\"height is greater than 100\")\r\n<\/pre>\n<p><strong>Output:<\/strong><\/p>\n<pre id=\"codeOutputPre\">height is less than 100<\/pre>\n<p><strong>Example -2:<\/strong><\/p>\n<p><strong>IF statement is false<\/strong><\/p>\n<p><strong>Below is the implementation:<\/strong><\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"python\">height = 120\r\n# checking if the height is greater than 100 or not\r\nif (height &lt; 100):\r\n    print(\"height is less than 100\")\r\nelse:\r\n    print(\"height is greater than 100\")\r\n<\/pre>\n<p><strong>Output:<\/strong><\/p>\n<pre id=\"codeOutputPre\">height is greater than 100<\/pre>\n<h3 id=\"If_statement_with_multiple_conditions\">3)If statement with multiple conditions<\/h3>\n<p>In all of the preceding instances, we provide a single condition with the if-statement, but we can also provide multiple conditions.<\/p>\n<p><strong>Example -1:<\/strong><\/p>\n<p><strong>If statement is true<\/strong><\/p>\n<p><strong>Below is the implementation:<\/strong><\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"python\">height = 50\r\n# checking if the height is between 10 to 100\r\nif (height &gt; 10 and height &lt; 100):\r\n    print(\"height is between 10 to 100\")\r\nelse:\r\n    print(\"height is greater than 100 or less than 10\")\r\n<\/pre>\n<p><strong>Output:<\/strong><\/p>\n<pre id=\"codeOutputPre\">height is between 10 to 100<\/pre>\n<p><strong>Explanation:<\/strong><\/p>\n<p>The if-statement in this case checks several conditions, and if all of them satisfy and evaluate to True, the interpreter executes the code in the if-block.<\/p>\n<p><strong>Example -2:<\/strong><\/p>\n<p><strong>IF statement is false<\/strong><\/p>\n<p><strong>Below is the implementation:<\/strong><\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"python\">height = 120\r\n# checking if the height is between 10 to 100\r\nif (height &gt; 10 and height &lt; 100):\r\n    print(\"height is between 10 to 100\")\r\nelse:\r\n    print(\"height is greater than 100 or less than 10\")\r\n<\/pre>\n<p><strong>Output:<\/strong><\/p>\n<pre id=\"codeOutputPre\">height is greater than 100 or less than 10<\/pre>\n<p><strong>Related Programs<\/strong>:<\/p>\n<ul>\n<li><a href=\"https:\/\/python-programs.com\/lecture-notes\/\">lecture notes<\/a><\/li>\n<li><a href=\"https:\/\/python-programs.com\/discrete-mathematics-notes\/\">discrete mathematics notes<\/a><\/li>\n<li><a href=\"https:\/\/python-programs.com\/computer-application-notes\/\">computer application notes<\/a><\/li>\n<li><a href=\"https:\/\/python-programs.com\/computer-system-architecture-notes\/\">computer system architecture notes<\/a><\/li>\n<li><a href=\"https:\/\/python-programs.com\/c-programming-lecture-notes\/\">c programming lecture notes<\/a><\/li>\n<li><a href=\"https:\/\/python-programs.com\/compiler-design-notes\/\">compiler design notes<\/a><\/li>\n<li><a href=\"https:\/\/python-programs.com\/operating-system-notes\/\">operating system notes<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>In real life, there are times when we must make choices and decide what to do next based on those decisions. Similar scenarios occur in programming where we must make decisions and then execute the next block of code based on those decisions. If Statement in Python If statement Examples of if statement If statement &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/python-programs.com\/python-if-statement\/\"> <span class=\"screen-reader-text\">Python: If-Statement<\/span> Read More &raquo;<\/a><\/p>\n","protected":false},"author":7,"featured_media":6374,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":"","jetpack_publicize_message":"","jetpack_is_tweetstorm":false,"jetpack_publicize_feature_enabled":true},"categories":[5],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v18.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Python: If-Statement - Python Programs<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/python-programs.com\/python-if-statement\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Python: If-Statement - Python Programs\" \/>\n<meta property=\"og:description\" content=\"In real life, there are times when we must make choices and decide what to do next based on those decisions. 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