{"id":1954,"date":"2020-12-28T02:40:11","date_gmt":"2020-12-28T02:40:11","guid":{"rendered":"https:\/\/www.pythontutorial.net\/?page_id=1954"},"modified":"2020-12-28T02:40:16","modified_gmt":"2020-12-28T02:40:16","slug":"python-string-isupper","status":"publish","type":"page","link":"https:\/\/www.pythontutorial.net\/python-string-methods\/python-string-isupper\/","title":{"rendered":"Python String isupper()"},"content":{"rendered":"\n<p><strong>Summary<\/strong>: in this tutorial, you&#8217;ll learn how to use the Python string <code>isupper()<\/code> method to check if all cases characters in a <a href=\"https:\/\/www.pythontutorial.net\/python-basics\/python-string\/\">string<\/a> are uppercase.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id='introduction-to-the-python-string-isupper-method'>Introduction to the Python String isupper() method <a href=\"#introduction-to-the-python-string-isupper-method\" class=\"anchor\" id=\"introduction-to-the-python-string-isupper-method\" title=\"Anchor for Introduction to the Python String isupper() method\">#<\/a><\/h2>\n\n\n\n<p>Here is the syntax of the <code>isupper()<\/code> method:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-1\" data-shcb-language-name=\"CSS\" data-shcb-language-slug=\"css\"><span><code class=\"hljs language-css\"><span class=\"hljs-selector-tag\">str<\/span><span class=\"hljs-selector-class\">.isupper<\/span>()<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-1\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">CSS<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">css<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<p>The string <code>isupper()<\/code> method returns <code>True<\/code> if all cased characters in a string are uppercase. Otherwise, it returns <code>False<\/code>.<\/p>\n\n\n\n<p>If the string doesn&#8217;t contain any cased characters, the <code>isupper()<\/code> method also returns <code>False<\/code>.<\/p>\n\n\n\n<p>In Python, cased characters are the ones with general category property being one of:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Lu( letter, uppercase)<\/li><li>Ll(letter, uppercase)<\/li><li>Lt (letter, titlecase)<\/li><\/ul>\n\n\n\n<p>Notice that to return a copy of the string with all cased characters converted to uppercase, you use the string <code><a href=\"https:\/\/www.pythontutorial.net\/python-string-methods\/python-string-upper\/\">upper()<\/a><\/code> method.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id='python-string-isupper-method-examples'>Python String isupper() method examples <a href=\"#python-string-isupper-method-examples\" class=\"anchor\" id=\"python-string-isupper-method-examples\" title=\"Anchor for Python String isupper() method examples\">#<\/a><\/h2>\n\n\n\n<p>Let&#8217;s take some examples of using the string <code>isupper()<\/code> method.<\/p>\n\n\n\n<p>The following example uses the <code>isupper()<\/code> to check if all cased characters of a string are uppercase:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-2\" data-shcb-language-name=\"PHP\" data-shcb-language-slug=\"php\"><span><code class=\"hljs language-php\">message = <span class=\"hljs-string\">'PYTHON'<\/span>\nis_uppercase = message.isupper()\n\n<span class=\"hljs-keyword\">print<\/span>(is_uppercase)<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-2\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">PHP<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">php<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<p>Output:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-3\" data-shcb-language-name=\"PHP\" data-shcb-language-slug=\"php\"><span><code class=\"hljs language-php\"><span class=\"hljs-keyword\">True<\/span><\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-3\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">PHP<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">php<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<p>However, the following example returns <code>False<\/code> because the string contains some characters in lowercase:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-4\" data-shcb-language-name=\"PHP\" data-shcb-language-slug=\"php\"><span><code class=\"hljs language-php\">language = <span class=\"hljs-string\">'Python'<\/span>\nis_uppercase = language.isupper()\n\n<span class=\"hljs-keyword\">print<\/span>(is_uppercase)<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-4\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">PHP<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">php<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<p>Output:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-5\" data-shcb-language-name=\"PHP\" data-shcb-language-slug=\"php\"><span><code class=\"hljs language-php\"><span class=\"hljs-keyword\">False<\/span><\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-5\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">PHP<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">php<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<p>The following example also returns <code>False<\/code> because the string doesn&#8217;t has any cased characters:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-6\" data-shcb-language-name=\"PHP\" data-shcb-language-slug=\"php\"><span><code class=\"hljs language-php\">amount = <span class=\"hljs-string\">'$100'<\/span>\nis_uppercase = amount.isupper()\n\n<span class=\"hljs-keyword\">print<\/span>(is_uppercase)<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-6\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">PHP<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">php<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<p>Output:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-7\" data-shcb-language-name=\"PHP\" data-shcb-language-slug=\"php\"><span><code class=\"hljs language-php\"><span class=\"hljs-keyword\">False<\/span><\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-7\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">PHP<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">php<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<h2 class=\"wp-block-heading\" id='summary'>Summary <a href=\"#summary\" class=\"anchor\" id=\"summary\" title=\"Anchor for Summary\">#<\/a><\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li>Use the Python string <code>isupper()<\/code> method to check if all cased characters of a string are uppercase.<\/li><\/ul>\n<div class=\"helpful-block-content\" data-title=\"\">\n\t<header>\n\t\t<div class=\"wth-question\">Was this tutorial helpful ?<\/div>\n\t\t<div class=\"wth-thumbs\">\n\t\t\t<button\n\t\t\t\tdata-post=\"1954\"\n\t\t\t\tdata-post-url=\"https:\/\/www.pythontutorial.net\/python-string-methods\/python-string-isupper\/\"\n\t\t\t\tdata-post-title=\"Python String isupper()\"\n\t\t\t\tdata-response=\"1\"\n\t\t\t\tclass=\"wth-btn-rounded 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to check if all cases characters in a string are uppercase<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":1925,"menu_order":13,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1954","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.pythontutorial.net\/wp-json\/wp\/v2\/pages\/1954","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.pythontutorial.net\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.pythontutorial.net\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.pythontutorial.net\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.pythontutorial.net\/wp-json\/wp\/v2\/comments?post=1954"}],"version-history":[{"count":0,"href":"https:\/\/www.pythontutorial.net\/wp-json\/wp\/v2\/pages\/1954\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/www.pythontutorial.net\/wp-json\/wp\/v2\/pages\/1925"}],"wp:attachment":[{"href":"https:\/\/www.pythontutorial.net\/wp-json\/wp\/v2\/media?parent=1954"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}