{"id":1836,"date":"2020-12-26T09:17:21","date_gmt":"2020-12-26T09:17:21","guid":{"rendered":"https:\/\/www.pythontutorial.net\/?page_id=1836"},"modified":"2020-12-28T01:15:42","modified_gmt":"2020-12-28T01:15:42","slug":"python-string-replace","status":"publish","type":"page","link":"https:\/\/www.pythontutorial.net\/python-string-methods\/python-string-replace\/","title":{"rendered":"Python String replace()"},"content":{"rendered":"\n<p><strong>Summary<\/strong>: in this tutorial, you&#8217;ll learn how to use the Python string <code>replace()<\/code> method to replace some or all occurrences of a substring with a new substring.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id='introduction-to-the-python-string-replace-method'>Introduction to the Python string replace() method <a href=\"#introduction-to-the-python-string-replace-method\" class=\"anchor\" id=\"introduction-to-the-python-string-replace-method\" title=\"Anchor for Introduction to the Python string replace() method\">#<\/a><\/h2>\n\n\n\n<p>The <code>replace()<\/code> method returns a copy of a <a href=\"https:\/\/www.pythontutorial.net\/python-basics\/python-string\/\">string<\/a> with some or all matches of a substring replaced with a new substring.<\/p>\n\n\n\n<p>The following shows the syntax of the <code>replace()<\/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\">.replace<\/span>(<span class=\"hljs-selector-tag\">substr<\/span>, <span class=\"hljs-selector-tag\">new_substr<\/span> <span class=\"hljs-selector-attr\">&#91;, count]<\/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 <code>replace()<\/code> method accepts three parameters:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><code>substr<\/code> is a string that is to be replaced by the <code>new_substr<\/code>.<\/li><li><code>new_substr<\/code> is the string that replaces the <code>substr<\/code><\/li><li><code>count<\/code> is an <a href=\"https:\/\/www.pythontutorial.net\/advanced-python\/python-integers\/\">integer<\/a> that specifies the first <code>count<\/code> number of occurrences of the substr that will be replaced with the <code>new_substr<\/code>. The <code>count<\/code> parameter is optional. If you omit the count argument, the <code>replace()<\/code> method will replace all the occurrences of the <code>substr<\/code> by the <code>new_substr<\/code>.<\/li><\/ul>\n\n\n\n<p>It&#8217;s important to note that the <code>replace()<\/code> method returns a copy of the original string with some or all occurrences of the <code>substr<\/code> replaced by the <code>new_substr<\/code>. It doesn&#8217;t change the original string.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id='python-string-replace-method-examples'>Python string replace() method examples <a href=\"#python-string-replace-method-examples\" class=\"anchor\" id=\"python-string-replace-method-examples\" title=\"Anchor for Python string replace() method examples\">#<\/a><\/h2>\n\n\n\n<p>Let&#8217;s take some examples of using the <code>replace()<\/code> method.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id='1-replacing-all-occurrences-of-a-substring-with-a-new-substring'>1) Replacing all occurrences of a substring with a new substring <a href=\"#1-replacing-all-occurrences-of-a-substring-with-a-new-substring\" class=\"anchor\" id=\"1-replacing-all-occurrences-of-a-substring-with-a-new-substring\" title=\"Anchor for 1) Replacing all occurrences of a substring with a new substring\">#<\/a><\/h3>\n\n\n\n<p>The following example uses the string replace() method to replace all occurrences of the substring <code>'We'<\/code> by the new substring <code>'Python'<\/code>:<\/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\">s = <span class=\"hljs-string\">'We will, We will rock you!'<\/span>\nnew_s = s.replace(<span class=\"hljs-string\">'We'<\/span>, <span class=\"hljs-string\">'Python'<\/span>)\n\n<span class=\"hljs-keyword\">print<\/span>(s)\n<span class=\"hljs-keyword\">print<\/span>(new_s)<\/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\"><span><code class=\"hljs\">We will, We will rock you!\nPython will, Python will rock you!<\/code><\/span><\/pre>\n\n\n<h3 class=\"wp-block-heading\" id='2-replacing-some-occurrences-of-a-substring-by-a-new-substring'>2) Replacing some occurrences of a substring by a new substring <a href=\"#2-replacing-some-occurrences-of-a-substring-by-a-new-substring\" class=\"anchor\" id=\"2-replacing-some-occurrences-of-a-substring-by-a-new-substring\" title=\"Anchor for 2) Replacing some occurrences of a substring by a new substring\">#<\/a><\/h3>\n\n\n\n<p>The following example uses the <code>replace()<\/code> method to replace the first occurrence of the substring <code>'bye'<\/code> by the new substring <code>'baby'<\/code>:<\/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\">s = <span class=\"hljs-string\">'Baby bye bye bye!'<\/span>\nnew_s = s.replace(<span class=\"hljs-string\">'bye'<\/span>, <span class=\"hljs-string\">'baby'<\/span>, <span class=\"hljs-number\">1<\/span>)\n\n<span class=\"hljs-keyword\">print<\/span>(new_s)<\/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>Output:<\/p>\n\n\n<pre class=\"wp-block-code\"><span><code class=\"hljs\">Baby baby bye bye!<\/code><\/span><\/pre>\n\n\n<p>In this example, we passed the count argument as one. Therefore, the replace() method just replaces the first occurrence of the string <code>'bye'<\/code> with the string <code>'baby'<\/code><\/p>\n\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>replace()<\/code> method to return a copy of a string with some or all occurrences of a substring replaced by a new substring.<\/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=\"1836\"\n\t\t\t\tdata-post-url=\"https:\/\/www.pythontutorial.net\/python-string-methods\/python-string-replace\/\"\n\t\t\t\tdata-post-title=\"Python String replace()\"\n\t\t\t\tdata-response=\"1\"\n\t\t\t\tclass=\"wth-btn-rounded wth-yes-btn\"\n\t\t\t>\n\t\t\t\t<svg\n\t\t\t\t\txmlns=\"http:\/\/www.w3.org\/2000\/svg\"\n\t\t\t\t\tviewBox=\"0 0 24 24\"\n\t\t\t\t\tfill=\"none\"\n\t\t\t\t\tstroke=\"currentColor\"\n\t\t\t\t\tstroke-width=\"2\"\n\t\t\t\t\tstroke-linecap=\"round\"\n\t\t\t\t\tstroke-linejoin=\"round\"\n\t\t\t\t\tclass=\"feather feather-thumbs-up block w-full h-full\"\n\t\t\t\t>\n\t\t\t\t\t<path\n\t\t\t\t\t\td=\"M14 9V5a3 3 0 0 0-3-3l-4 9v11h11.28a2 2 0 0 0 2-1.7l1.38-9a2 2 0 0 0-2-2.3zM7 22H4a2 2 0 0 1-2-2v-7a2 2 0 0 1 2-2h3\"\n\t\t\t\t\t><\/path>\n\t\t\t\t<\/svg>\n\t\t\t\t<span class=\"sr-only\"> Yes <\/span>\n\t\t\t<\/button>\n\n\t\t\t<button\n\t\t\t\tdata-response=\"0\"\n\t\t\t\tdata-post=\"1836\"\n\t\t\t\tdata-post-url=\"https:\/\/www.pythontutorial.net\/python-string-methods\/python-string-replace\/\"\n\t\t\t\tdata-post-title=\"Python String replace()\"\n\t\t\t\tclass=\"wth-btn-rounded wth-no-btn\"\n\t\t\t>\n\t\t\t\t<svg\n\t\t\t\t\txmlns=\"http:\/\/www.w3.org\/2000\/svg\"\n\t\t\t\t\tviewBox=\"0 0 24 24\"\n\t\t\t\t\tfill=\"none\"\n\t\t\t\t\tstroke=\"currentColor\"\n\t\t\t\t\tstroke-width=\"2\"\n\t\t\t\t\tstroke-linecap=\"round\"\n\t\t\t\t\tstroke-linejoin=\"round\"\n\t\t\t\t>\n\t\t\t\t\t<path\n\t\t\t\t\t\td=\"M10 15v4a3 3 0 0 0 3 3l4-9V2H5.72a2 2 0 0 0-2 1.7l-1.38 9a2 2 0 0 0 2 2.3zm7-13h2.67A2.31 2.31 0 0 1 22 4v7a2.31 2.31 0 0 1-2.33 2H17\"\n\t\t\t\t\t><\/path>\n\t\t\t\t<\/svg>\n\t\t\t\t<span class=\"sr-only\"> No <\/span>\n\t\t\t<\/button>\n\t\t<\/div>\n\t<\/header>\n\n\t<div class=\"wth-form hidden\">\n\t\t<div class=\"wth-form-wrapper\">\n\t\t\t<div class=\"wth-title\"><\/div>\n\t\t\t<textarea class=\"wth-message\"><\/textarea>\n\t\t\t<input type=\"button\" name=\"wth-submit\" class=\"wth-btn wth-btn-submit\" id=\"wth-submit\" \/>\n\t\t\t<input type=\"button\" class=\"wth-btn wth-btn-cancel\" value=\"Cancel\" \/>\n\t\t<\/div>\n\t<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>In this tutorial, you&#8217;ll learn how to use the Python string replace() method to replace some or all occurrences of a substring with a new substring.<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":1925,"menu_order":19,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1836","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.pythontutorial.net\/wp-json\/wp\/v2\/pages\/1836","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=1836"}],"version-history":[{"count":0,"href":"https:\/\/www.pythontutorial.net\/wp-json\/wp\/v2\/pages\/1836\/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=1836"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}