{"id":35419,"date":"2025-03-06T07:26:18","date_gmt":"2025-03-06T07:26:18","guid":{"rendered":"https:\/\/www.ultraedit.com\/blog\/exemples-concrets-dexpressions-regulieres-regex-en-2025\/"},"modified":"2025-03-06T07:26:18","modified_gmt":"2025-03-06T07:26:18","slug":"exemples-concrets-dexpressions-regulieres-regex-en-2025","status":"publish","type":"post","link":"https:\/\/www.ultraedit.com\/fr\/blog\/exemples-concrets-dexpressions-regulieres-regex-en-2025\/","title":{"rendered":"Exemples concrets d&rsquo;expressions r\u00e9guli\u00e8res (regex) en 2025"},"content":{"rendered":"<h2><b>Introduction<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">L&rsquo;utilisation des expressions r\u00e9guli\u00e8res reste l&rsquo;une des techniques les plus sous-estim\u00e9es en mati\u00e8re de manipulation et de recherche de texte. En raison de sa syntaxe peu commune, elle peut sembler \u00e0 premi\u00e8re vue obscure \u00e0 de nombreux novices (et nous ne pouvons pas les bl\u00e2mer !).   <\/span><\/p>\n<p><span style=\"font-weight: 400;\">Cependant, avec un certain nombre d&rsquo;outils utiles et quelques exemples pour vous familiariser avec la technique, les regex deviennent beaucoup plus intuitives et ouvrent de nombreuses possibilit\u00e9s pour manipuler le texte. Et c&rsquo;est exactement ce que nous souhaitons partager dans cet article de blog. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">Note : Nous ferons r\u00e9f\u00e9rence \u00e0 la <\/span><a href=\"https:\/\/www.youtube.com\/live\/dCTrUlvPmng?feature=shared\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">UltraEdit Masterclass sur les Regex<\/span><\/a><span style=\"font-weight: 400;\">  pour ce blog. N&rsquo;h\u00e9sitez pas \u00e0 lire ce blog parall\u00e8lement \u00e0 la rediffusion du webinaire. <\/span><\/p>\n<h2><b>Pourquoi utiliser les expressions r\u00e9guli\u00e8res ?<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Les expressions r\u00e9guli\u00e8res vous offrent un autre moyen de filtrer et de rechercher des cha\u00eenes de caract\u00e8res sp\u00e9cifiques en utilisant la correspondance de motifs et la manipulation de texte. Il s&rsquo;agit d&rsquo;un outil polyvalent qui vous permet de d\u00e9finir des mod\u00e8les de recherche complexes pour faire correspondre des s\u00e9quences de caract\u00e8res dans des cha\u00eenes. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">Elle est particuli\u00e8rement utile si vous ne souhaitez pas d\u00e9finir exactement chaque cha\u00eene, mais que vous savez qu&rsquo;elles suivent un certain mod\u00e8le ou format. Par exemple, une adresse \u00e9lectronique ou un num\u00e9ro de t\u00e9l\u00e9phone qui aurait un format <\/span> <i><span style=\"font-weight: 400;\"> \u00ab\u00a0username@domain.com\u00a0\u00bb <\/span><\/i><span style=\"font-weight: 400;\">ou \u00ab\u00a0+09-87654321\u00a0\u00bb, respectivement.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">En r\u00e9sum\u00e9, les expressions r\u00e9guli\u00e8res constituent une technique de recherche de motifs principalement utilis\u00e9e pour :<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Valider l&rsquo;existence d&rsquo;un texte<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Valider le format d&rsquo;un texte<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Recherche et extraction de texte<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Cette flexibilit\u00e9 fait des regex des outils id\u00e9aux pour les op\u00e9rations de recherche complexes qui d\u00e9passent les capacit\u00e9s des simples fonctions de recherche de cha\u00eenes de caract\u00e8res. Par exemple, les expressions rationnelles peuvent valider des donn\u00e9es telles que des adresses \u00e9lectroniques, extraire des URL d&rsquo;un texte, reformater un texte existant ou remplacer des motifs sp\u00e9cifiques par un nouveau texte, ce qui est particuli\u00e8rement efficace pour traiter les donn\u00e9es d&rsquo;entr\u00e9e. <\/span><\/p>\n<h2><b>Diff\u00e9rence entre les regex et les cha\u00eenes de caract\u00e8res r\u00e9guli\u00e8res pour la recherche\/code<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Par rapport aux op\u00e9rations de recherche et de filtrage normales, les expressions rationnelles offrent une plus grande souplesse et une plus grande complexit\u00e9, vous permettant de d\u00e9finir des motifs complexes avec des \u00e9l\u00e9ments optionnels, des r\u00e9p\u00e9titions et des classes de caract\u00e8res.  <\/span><\/p>\n<p><span style=\"font-weight: 400;\">Toutefois, cette puissance s&rsquo;accompagne de compromis en termes de performances et de lisibilit\u00e9. Les expressions rationnelles peuvent \u00eatre plus lentes, en particulier lorsqu&rsquo;il s&rsquo;agit de motifs complexes et de grands ensembles de donn\u00e9es, et leur syntaxe peut \u00eatre difficile \u00e0 comprendre.   <\/span><\/p>\n<p><span style=\"font-weight: 400;\">Alors que les expressions rationnelles conviennent mieux aux t\u00e2ches n\u00e9cessitant une recherche avanc\u00e9e de motifs, les op\u00e9rations de recherche et de filtrage normales sont plus intuitives et plus efficaces pour les recherches directes et les correspondances exactes. L&rsquo;astuce consiste \u00e0 d\u00e9terminer o\u00f9 et comment vous devez utiliser les expressions rationnelles par rapport aux cha\u00eenes de caract\u00e8res r\u00e9guli\u00e8res. <\/span><\/p>\n<p><b><i>Protip<\/i><\/b><b>: <\/b><span style=\"font-weight: 400;\">Pour comprendre ce que fait chaque partie de la regex, exp\u00e9rimentez avec un <\/span><a href=\"https:\/\/regex101.com\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">testeur de regex.<\/span><\/a><\/p>\n<p><img decoding=\"async\" class=\"wp-image-34869 size-full\" style=\"font-weight: bold;\" src=\"https:\/\/www.ultraedit.com\/wp-content\/uploads\/2025\/02\/UltraEdit-Masterclass_-The-Regex-Toolkit-Youll-Actually-Use-REGEXSR-screenshot.png\" alt=\"regexr101 dans ultraedit pour regex\" width=\"752\" height=\"612\" srcset=\"https:\/\/www.ultraedit.com\/wp-content\/uploads\/2025\/02\/UltraEdit-Masterclass_-The-Regex-Toolkit-Youll-Actually-Use-REGEXSR-screenshot.png 752w, https:\/\/www.ultraedit.com\/wp-content\/uploads\/2025\/02\/UltraEdit-Masterclass_-The-Regex-Toolkit-Youll-Actually-Use-REGEXSR-screenshot-480x391.png 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 752px, 100vw\" \/><\/p>\n<p>L&rsquo;application web regex101. Cet outil peut \u00eatre utilis\u00e9 pour d\u00e9crire des parties d&rsquo;une expression rationnelle. <\/p>\n<h3><\/h3>\n<h3><span style=\"font-weight: 400;\">Exemple 1 : Extraction de dates \u00e0 l&rsquo;aide d&rsquo;expressions r\u00e9guli\u00e8res en Python<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Dans cet exemple, nous utilisons \u00e0 la fois des expressions rationnelles et des cha\u00eenes de caract\u00e8res manuelles pour extraire les dates d&rsquo;une phrase.<\/span><\/p>\n<p><!-- HTML generated using hilite.me --><\/p>\n<div style=\"background: #202020; overflow: auto; width: auto; border-width: .1em .1em .1em .8em; padding: .2em .6em;\">\n<pre style=\"margin: 0; line-height: 125%;\"><span style=\"color: #6ab825; font-weight: bold;\">import<\/span> <span style=\"color: #447fcf; text-decoration: underline;\">re<\/span>\n<span style=\"color: #d0d0d0;\">text<\/span> <span style=\"color: #d0d0d0;\">=<\/span> <span style=\"color: #ed9d13;\">\"The event is scheduled for 2023-10-01 and 2023-11-15.\"<\/span>\n<span style=\"color: #d0d0d0;\">pattern<\/span> <span style=\"color: #d0d0d0;\">=<\/span> <span style=\"color: #ed9d13;\">r\"\\b\\d{4}-\\d{2}-\\d{2}\\b\"<\/span>\n<span style=\"color: #d0d0d0;\">dates<\/span> <span style=\"color: #d0d0d0;\">=<\/span> <span style=\"color: #d0d0d0;\">re.findall(pattern,<\/span> <span style=\"color: #d0d0d0;\">text)<\/span>\n<span style=\"color: #24909d;\">print<\/span><span style=\"color: #d0d0d0;\">(<\/span><span style=\"color: #ed9d13;\">\"Dates found:\"<\/span><span style=\"color: #d0d0d0;\">,<\/span> <span style=\"color: #d0d0d0;\">dates)<\/span>\n<\/pre>\n<\/div>\n<p><i><span style=\"font-weight: 400;\">Utilisation d&rsquo;une expression rationnelle pour faire correspondre des sections de texte suivant le mod\u00e8le aaaa-mm-jj.<\/span><\/i><\/p>\n<p><!-- HTML generated using hilite.me --><br \/>\n<!-- HTML generated using hilite.me --><\/p>\n<div style=\"background: #202020; overflow: auto; width: auto; border-width: .1em .1em .1em .8em; padding: .2em .6em;\">\n<pre style=\"margin: 0; line-height: 125%;\"><span style=\"color: #d0d0d0;\">text<\/span> <span style=\"color: #d0d0d0;\">=<\/span> <span style=\"color: #ed9d13;\">\"The event is scheduled for 2023-10-01 and 2023-11-15.\"<\/span>\n  <span style=\"color: #d0d0d0;\">words<\/span> <span style=\"color: #d0d0d0;\">=<\/span> <span style=\"color: #d0d0d0;\">text.split()<\/span>\n  <span style=\"color: #d0d0d0;\">dates<\/span> <span style=\"color: #d0d0d0;\">=<\/span> <span style=\"color: #d0d0d0;\">[]<\/span>\n  \n  <span style=\"color: #6ab825; font-weight: bold;\">for<\/span> <span style=\"color: #d0d0d0;\">word<\/span> <span style=\"color: #6ab825; font-weight: bold;\">in<\/span> <span style=\"color: #d0d0d0;\">words:<\/span>\n      <span style=\"color: #6ab825; font-weight: bold;\">if<\/span> <span style=\"color: #24909d;\">len<\/span><span style=\"color: #d0d0d0;\">(word)<\/span> <span style=\"color: #d0d0d0;\">==<\/span> <span style=\"color: #3677a9;\">10<\/span> <span style=\"color: #6ab825; font-weight: bold;\">and<\/span> <span style=\"color: #d0d0d0;\">word[<\/span><span style=\"color: #3677a9;\">4<\/span><span style=\"color: #d0d0d0;\">]<\/span> <span style=\"color: #d0d0d0;\">==<\/span> <span style=\"color: #ed9d13;\">'-'<\/span> <span style=\"color: #6ab825; font-weight: bold;\">and<\/span> <span style=\"color: #d0d0d0;\">word[<\/span><span style=\"color: #3677a9;\">7<\/span><span style=\"color: #d0d0d0;\">]<\/span> <span style=\"color: #d0d0d0;\">==<\/span> <span style=\"color: #ed9d13;\">'-'<\/span><span style=\"color: #d0d0d0;\">:<\/span>\n          <span style=\"color: #6ab825; font-weight: bold;\">try<\/span><span style=\"color: #d0d0d0;\">:<\/span>\n              <span style=\"color: #d0d0d0;\">year,<\/span> <span style=\"color: #d0d0d0;\">month,<\/span> <span style=\"color: #d0d0d0;\">day<\/span> <span style=\"color: #d0d0d0;\">=<\/span> <span style=\"color: #24909d;\">map<\/span><span style=\"color: #d0d0d0;\">(<\/span><span style=\"color: #24909d;\">int<\/span><span style=\"color: #d0d0d0;\">,<\/span> <span style=\"color: #d0d0d0;\">word.split(<\/span><span style=\"color: #ed9d13;\">'-'<\/span><span style=\"color: #d0d0d0;\">))<\/span>\n              <span style=\"color: #d0d0d0;\">dates.append(word)<\/span>\n          <span style=\"color: #6ab825; font-weight: bold;\">except<\/span> <span style=\"color: #bbbbbb;\">ValueError<\/span><span style=\"color: #d0d0d0;\">:<\/span>\n              <span style=\"color: #6ab825; font-weight: bold;\">continue<\/span>\n  \n  <span style=\"color: #24909d;\">print<\/span><span style=\"color: #d0d0d0;\">(<\/span><span style=\"color: #ed9d13;\">\"Dates found:\"<\/span><span style=\"color: #d0d0d0;\">,<\/span> <span style=\"color: #d0d0d0;\">dates)<\/span>\n<\/pre>\n<\/div>\n<p><i><span style=\"font-weight: 400;\">Utiliser la recherche manuelle de cha\u00eenes de caract\u00e8res. Cette m\u00e9thode de force brute analyse toute la ligne de texte et v\u00e9rifie si elle respecte le format de date &#8211; ce n&rsquo;est pas la solution la plus optimale, mais elle fonctionne. <\/span><\/i><\/p>\n<p>&nbsp;<\/p>\n<h3><\/h3>\n<h3><span style=\"font-weight: 400;\">Exemple 2 : Validation d&rsquo;une entr\u00e9e (email) avec une expression rationnelle en Python<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Dans cet exemple, nous utilisons \u00e0 la fois des expressions rationnelles et des cha\u00eenes de caract\u00e8res manuelles pour tenter de valider une adresse \u00e9lectronique.<\/span><\/p>\n<p><!-- HTML generated using hilite.me --><\/p>\n<div style=\"background: #202020; overflow: auto; width: auto; border-width: .1em .1em .1em .8em; padding: .2em .6em;\">\n<pre style=\"margin: 0; line-height: 125%;\"><span style=\"color: #6ab825; font-weight: bold;\">import<\/span> <span style=\"color: #447fcf; text-decoration: underline;\">re<\/span>\n  <span style=\"color: #d0d0d0;\">email<\/span> <span style=\"color: #d0d0d0;\">=<\/span> <span style=\"color: #ed9d13;\">\"example@example.com\"<\/span>\n  <span style=\"color: #d0d0d0;\">pattern<\/span> <span style=\"color: #d0d0d0;\">=<\/span> <span style=\"color: #ed9d13;\">r\"^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\\.[a-zA-Z]{2,}$\"<\/span>\n  \n  <span style=\"color: #6ab825; font-weight: bold;\">if<\/span> <span style=\"color: #d0d0d0;\">re.match(pattern,<\/span> <span style=\"color: #d0d0d0;\">email):<\/span>\n      <span style=\"color: #24909d;\">print<\/span><span style=\"color: #d0d0d0;\">(<\/span><span style=\"color: #ed9d13;\">\"Valid email address\"<\/span><span style=\"color: #d0d0d0;\">)<\/span>\n  <span style=\"color: #6ab825; font-weight: bold;\">else<\/span><span style=\"color: #d0d0d0;\">:<\/span>\n      <span style=\"color: #24909d;\">print<\/span><span style=\"color: #d0d0d0;\">(<\/span><span style=\"color: #ed9d13;\">\"Invalid email address\"<\/span><span style=\"color: #d0d0d0;\">)<\/span>\n<\/pre>\n<\/div>\n<p><i><span style=\"font-weight: 400;\">Cette m\u00e9thode utilise une expression rationnelle pour faire correspondre le nom d&rsquo;utilisateur et le domaine de l&rsquo;adresse \u00e9lectronique.<\/span><\/i><br \/>\n<!-- HTML generated using hilite.me --><\/p>\n<div style=\"background: #202020; overflow: auto; width: auto; border-width: .1em .1em .1em .8em; padding: .2em .6em;\">\n<pre style=\"margin: 0; line-height: 125%;\"><span style=\"color: #d0d0d0;\">email<\/span> <span style=\"color: #d0d0d0;\">=<\/span> <span style=\"color: #ed9d13;\">\"example@example.com\"<\/span>\n\n  <span style=\"color: #6ab825; font-weight: bold;\">if<\/span> <span style=\"color: #ed9d13;\">\"@\"<\/span> <span style=\"color: #6ab825; font-weight: bold;\">in<\/span> <span style=\"color: #d0d0d0;\">email<\/span> <span style=\"color: #6ab825; font-weight: bold;\">and<\/span> <span style=\"color: #ed9d13;\">\".\"<\/span> <span style=\"color: #6ab825; font-weight: bold;\">in<\/span> <span style=\"color: #d0d0d0;\">email.split(<\/span><span style=\"color: #ed9d13;\">\"@\"<\/span><span style=\"color: #d0d0d0;\">)[<\/span><span style=\"color: #3677a9;\">1<\/span><span style=\"color: #d0d0d0;\">]:<\/span>\n  <span style=\"color: #24909d;\">print<\/span><span style=\"color: #d0d0d0;\">(<\/span><span style=\"color: #ed9d13;\">\"Valid email address\"<\/span><span style=\"color: #d0d0d0;\">)<\/span>\n<span style=\"color: #6ab825; font-weight: bold;\">else<\/span><span style=\"color: #d0d0d0;\">:<\/span>\n  <span style=\"color: #24909d;\">print<\/span><span style=\"color: #d0d0d0;\">(<\/span><span style=\"color: #ed9d13;\">\"Invalid email address\"<\/span><span style=\"color: #d0d0d0;\">)\/code&gt;<\/span>\n<\/pre>\n<\/div>\n<p><i><span style=\"font-weight: 400;\">Cet exemple utilise le d\u00e9coupage de cha\u00eenes et des instructions \u00ab\u00a0if\u00a0\u00bb pour valider les courriels. Il s&rsquo;agit d&rsquo;une solution plus simple que le dernier exemple en raison de la structure pr\u00e9visible des adresses \u00e9lectroniques. <\/span><\/i><\/p>\n<h3><b>R\u00e9sum\u00e9<\/b><span style=\"font-weight: 400;\">:<\/span><b> <\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Ces deux exemples montrent comment les expressions rationnelles et les cha\u00eenes de caract\u00e8res r\u00e9guli\u00e8res permettent d&rsquo;obtenir le m\u00eame r\u00e9sultat. Toutefois, il est important de v\u00e9rifier d&rsquo;abord le type de donn\u00e9es que vous traitez et le r\u00e9sultat que vous souhaitez obtenir. Les deux m\u00e9thodes fonctionnent, mais l&rsquo;une peut \u00eatre plus complexe que l&rsquo;autre.  <\/span><\/p>\n<p><span style=\"font-weight: 400;\">Le premier exemple avec l&#8217;email montre comment une expression regex peut facilement remplacer plusieurs lignes et op\u00e9rations sur les cha\u00eenes de caract\u00e8res. D&rsquo;un autre c\u00f4t\u00e9, le deuxi\u00e8me exemple avec la validation du courrier \u00e9lectronique montre que les op\u00e9rations sur les cha\u00eenes de caract\u00e8res r\u00e9guli\u00e8res peuvent parfois \u00eatre moins complexes et plus faciles \u00e0 utiliser que les expressions rationnelles. <\/span><\/p>\n<p>&nbsp;<\/p>\n<h2><b>Plus d&rsquo;exemples de regex + d\u00e9mo webinaire<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Voici d&rsquo;autres exemples qui illustrent des sc\u00e9narios d&rsquo;utilisation des expressions rationnelles. Ils utilisent des fichiers r\u00e9els et des formats de texte courants que vous pouvez rencontrer au quotidien. Cela devrait vous donner une id\u00e9e plus claire de la mani\u00e8re dont vous pouvez utiliser les expressions rationnelles au maximum de leur potentiel.  <\/span><\/p>\n<p><iframe title=\"Lecteur vid\u00e9o YouTube\" src=\"https:\/\/www.youtube.com\/embed\/dCTrUlvPmng?si=K_mvGEFdsCYL_EtR\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<p><span style=\"font-weight: 400;\">L&rsquo;expos\u00e9 suivant pr\u00e9sente un outil appel\u00e9 UltraEdit (UE), un \u00e9diteur de texte pratique qui int\u00e8gre la prise en charge de la recherche et du remplacement par expressions rationnelles. Il s&rsquo;agit d&rsquo;un outil polyvalent pour les d\u00e9veloppeurs, qui peut \u00eatre utilis\u00e9 pour \u00e9diter du code, \u00e9crire des scripts et effectuer des manipulations de texte complexes \u00e0 l&rsquo;aide d&rsquo;expressions rationnelles, en particulier sur des fichiers volumineux. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">Si vous souhaitez voir d&rsquo;autres exemples d&rsquo;utilisation des expressions r\u00e9guli\u00e8res dans le monde r\u00e9el, nous vous recommandons de regarder le webinaire \u00ab\u00a0UltraEdit Masterclass : The Regex Toolkit You&rsquo;ll Actually Use\u00a0\u00bb, qui se concentre sur l&rsquo;exploration des expressions r\u00e9guli\u00e8res compatibles avec Perl \u00e0 l&rsquo;aide d&rsquo;exemples pratiques et concrets.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Si vous souhaitez tester ces exemples par vous-m\u00eame, voici les <\/span><a href=\"https:\/\/drive.google.com\/drive\/folders\/1eqgmYQ-lnfgkGq11yAwxYmnd4nUfYj0t?usp=sharing\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\"><strong>fichiers d&rsquo;exemple utilis\u00e9s dans le webinaire<\/strong><\/span><\/a><span style=\"font-weight: 400;\">. Voici un r\u00e9sum\u00e9 de la session :<\/span><\/p>\n<ul>\n<li><span style=\"font-weight: 400;\">Op\u00e9rations de recherche et de remplacement<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Recherche et remplacement Regex : Modifier les balises HTML<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Regex Rechercher &amp; Remplacer : Nettoyer le format des donn\u00e9es<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Scripts Regex : Automatisez les t\u00e2ches r\u00e9p\u00e9titives \u00e0 l&rsquo;aide de scripts<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Cas d&rsquo;utilisation pratiques : <\/span><span style=\"font-weight: 400;\">analyse des journaux<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Cas d&rsquo;utilisation pratiques : <\/span><span style=\"font-weight: 400;\">validation des donn\u00e9es<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Cas d&rsquo;utilisation pratiques : <\/span><span style=\"font-weight: 400;\">manipulation de texte<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><a href=\"https:\/\/www.ultraedit.com\/support\/tutorials-power-tips\/ultraedit\/perl-regular-expressions-digging-deeper\/\" target=\"_blank\" rel=\"noopener\">Autres exemples utilisant des expressions rationnelles de type Perl<\/a><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3><span style=\"font-weight: 400;\">Exemple 3 : Extraire des dates et des num\u00e9ros de contact d&rsquo;un texte \u00e0 l&rsquo;aide d&rsquo;UltraEdit<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Celui-ci utilise une expression rationnelle similaire \u00e0 celle des deux premiers exemples sur un bloc de texte, montrant ainsi sa souplesse d&rsquo;utilisation avec diff\u00e9rents types de donn\u00e9es d&rsquo;entr\u00e9e.  <\/span><a href=\"https:\/\/youtu.be\/dCTrUlvPmng?t=1074\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Regardez-le en action.<\/span><\/a><\/p>\n<p><img decoding=\"async\" class=\"alignnone wp-image-34902\" src=\"https:\/\/www.ultraedit.com\/wp-content\/uploads\/2025\/03\/UltraEdit-Masterclass_-The-Regex-Toolkit-Youll-Actually-Use-17-58-screenshot.png\" alt=\"Exemple de regex d'Ultraedit  \" width=\"851\" height=\"387\"><\/p>\n<p><!-- HTML generated using hilite.me --><\/p>\n<div style=\"background: #202020; overflow: auto; width: auto; border-width: .1em .1em .1em .8em; padding: .2em .6em;\">\n<pre style=\"margin: 0; line-height: 125%; color: #fff;\">\\<span style=\"color: #d0d0d0;\">d{<\/span><span style=\"color: #3677a9;\">2<\/span><span style=\"color: #d0d0d0;\">}<\/span>\\<span style=\"color: #d0d0d0;\">\/<\/span>\\<span style=\"color: #d0d0d0;\">d{<\/span><span style=\"color: #3677a9;\">2<\/span><span style=\"color: #d0d0d0;\">}<\/span>\\<span style=\"color: #d0d0d0;\">\/<\/span>\\<span style=\"color: #d0d0d0;\">d{<\/span><span style=\"color: #3677a9;\">4<\/span><span style=\"color: #d0d0d0;\">}<\/span>\n<\/pre>\n<\/div>\n<p><i><span style=\"font-weight: 400;\">Regex pour trouver des dates dans le texte<\/span><\/i><\/p>\n<p><!-- HTML generated using hilite.me --><\/p>\n<div style=\"background: #202020; overflow: auto; width: auto; border-width: .1em .1em .1em .8em; padding: .2em .6em;\">\n<pre style=\"margin: 0; line-height: 125%; color: #ffff;\">\\<span style=\"color: #a61717;\">$?<\/span>\\<span style=\"color: #d0d0d0;\">d{<\/span><span style=\"color: #3677a9;\">1<\/span><span style=\"color: #d0d0d0;\">,<\/span><span style=\"color: #3677a9;\">3<\/span><span style=\"color: #d0d0d0;\">}(<\/span><span style=\"color: #a61717;\">?<\/span><span style=\"color: #d0d0d0;\">:<\/span>\\<span style=\"color: #d0d0d0;\">d{<\/span><span style=\"color: #3677a9;\">3<\/span><span style=\"color: #d0d0d0;\">})*(<\/span><span style=\"color: #a61717;\">?<\/span><span style=\"color: #d0d0d0;\">:<\/span>\\<span style=\"color: #d0d0d0;\">,<\/span>\\<span style=\"color: #d0d0d0;\">d{<\/span><span style=\"color: #3677a9;\">2<\/span><span style=\"color: #d0d0d0;\">})<\/span><span style=\"color: #a61717;\">?<\/span>\n<\/pre>\n<\/div>\n<p><em><span style=\"font-weight: 400;\">R\u00e8gle combinatoire permettant de faire correspondre des valeurs mon\u00e9taires, sp\u00e9cifiquement format\u00e9es en dollars am\u00e9ricains.<\/span><\/em><\/p>\n<h3><\/h3>\n<h3><span style=\"font-weight: 400;\">Exemple 4 : Suppression des balises, attributs et valeurs HTML (&lt;&gt;,&lt;\/&gt;) du texte dans UltraEdit<\/span><\/h3>\n<p><img decoding=\"async\" class=\"alignnone wp-image-34936\" src=\"https:\/\/www.ultraedit.com\/wp-content\/uploads\/2025\/03\/UltraEdit-Masterclass_-The-Regex-Toolkit-Youll-Actually-Use-23-17-screenshot.png\" alt=\"supprimer les balises html avec une expression rationnelle\" width=\"800\" height=\"356\"><\/p>\n<p><!-- HTML generated using hilite.me --><\/p>\n<div style=\"background: #111111; overflow: auto; width: auto; border-width: .1em .1em .1em .8em; padding: .2em .6em;\">\n<pre style=\"margin: 0; line-height: 125%;\"><span style=\"color: #ffffff;\">&lt;[^&gt;|+&gt;<\/span>\n<\/pre>\n<\/div>\n<p><span style=\"font-weight: 400;\">Expression rationnelle simple utilis\u00e9e pour remplacer toutes les occurrences de texte entre les carets (par exemple, &lt; p&gt; text &lt; p\/&gt;) afin de transformer le code HTML en texte brut. La capture d&rsquo;\u00e9cran montre l&rsquo;application web regex101 int\u00e9gr\u00e9e en tant que fen\u00eatre dans l&rsquo;\u00e9diteur UE.<br \/>\n<\/span><\/p>\n<p>&nbsp;<\/p>\n<h3><span style=\"font-weight: 400;\">Exemple 5 : Correspondance des champs .csv et permutation de leurs positions<\/span><\/h3>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-34945\" src=\"https:\/\/www.ultraedit.com\/wp-content\/uploads\/2025\/03\/UltraEdit-Masterclass_-The-Regex-Toolkit-Youll-Actually-Use-28-11-screenshot.png\" alt=\"exemple de fichier csv\" width=\"656\" height=\"166\" srcset=\"https:\/\/www.ultraedit.com\/wp-content\/uploads\/2025\/03\/UltraEdit-Masterclass_-The-Regex-Toolkit-Youll-Actually-Use-28-11-screenshot.png 656w, https:\/\/www.ultraedit.com\/wp-content\/uploads\/2025\/03\/UltraEdit-Masterclass_-The-Regex-Toolkit-Youll-Actually-Use-28-11-screenshot-480x121.png 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 656px, 100vw\" \/><\/p>\n<p><!-- HTML generated using hilite.me --><\/p>\n<div style=\"background: #202020; color: #fff; overflow: auto; width: auto; border-width: .1em .1em .1em .8em; padding: .2em .6em;\">\n<pre style=\"margin: 0; line-height: 125%;\"><span style=\"color: #d0d0d0;\">For<\/span> <span style=\"color: #d0d0d0;\">Find:<\/span> \n<span style=\"color: #d0d0d0;\">^((<\/span><span style=\"color: #a61717;\">?<\/span><span style=\"color: #d0d0d0;\">:[^,]+<\/span><span style=\"color: #a61717;\">?<\/span><span style=\"color: #d0d0d0;\">,){<\/span><span style=\"color: #3677a9;\">1<\/span><span style=\"color: #d0d0d0;\">})([^,]+<\/span><span style=\"color: #a61717;\">?<\/span><span style=\"color: #d0d0d0;\">,)<\/span>\n\n<span style=\"color: #d0d0d0;\">For<\/span> <span style=\"color: #d0d0d0;\">replace\/swap:<\/span>  \n\\<span style=\"color: #3677a9;\">2<\/span>\\<span style=\"color: #3677a9;\">1<\/span>\n<\/pre>\n<\/div>\n<p><i><span style=\"font-weight: 400;\">Ces deux expressions rationnelles recherchent les deux premiers champs d&rsquo;un fichier .csv et \u00e9changent leurs positions. Utilise la regex Find and Replace.  <\/span><\/i><\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-34945\" src=\"https:\/\/www.ultraedit.com\/wp-content\/uploads\/2023\/01\/image4.png\" alt=\"exemple de fichier csv\" width=\"656\" height=\"166\"><\/p>\n<h3><b>R\u00e9sum\u00e9<\/b><span style=\"font-weight: 400;\">:<\/span><b> <\/b><\/h3>\n<p><span style=\"font-weight: 400;\">L&rsquo;exemple 3 montre l&rsquo;adaptabilit\u00e9 des expressions rationnelles \u00e0 diff\u00e9rents types d&rsquo;entr\u00e9e, puisque vous pouvez extraire des dates et des num\u00e9ros de contact ind\u00e9pendamment de la longueur et de la structure du texte. L&rsquo;exemple 4 se concentre sur la suppression des balises HTML pour convertir le contenu HTML en texte brut. Enfin, l&rsquo;exemple 5 consiste \u00e0 trouver et \u00e0 intervertir les positions des champs dans un fichier CSV, ce qui met en \u00e9vidence la capacit\u00e9 des expressions rationnelles \u00e0 reformater et \u00e0 organiser les donn\u00e9es.  <\/span><\/p>\n<p><span style=\"font-weight: 400;\">Les trois derniers exemples montrent \u00e0 quel point les op\u00e9rations regex peuvent \u00eatre flexibles. Ils montrent comment, lorsqu&rsquo;elles sont correctement param\u00e9tr\u00e9es, elles peuvent parcourir des blocs de donn\u00e9es non structur\u00e9es et trouver avec pr\u00e9cision ce que vous recherchez. <\/span><\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-34945\" src=\"https:\/\/www.ultraedit.com\/wp-content\/uploads\/2023\/01\/image7.png\" alt=\"exemple de fichier csv\" width=\"656\" height=\"166\"><br \/>\n<i><span style=\"font-weight: 400;\">D&rsquo;autres expressions de regex courantes ont \u00e9t\u00e9 partag\u00e9es lors du webinaire.<\/span><\/i><\/p>\n<h3><span style=\"font-weight: 400;\">Autres outils pratiques pour traiter les expressions rationnelles :<\/span><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/regex101.com\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Regx101<\/span><\/a><span style=\"font-weight: 400;\"> (Testeur de regex)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/regexr.com\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Regexr<\/span><\/a><span style=\"font-weight: 400;\"> (Testeur de regex)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/www.ultraedit.com\/support\/tutorials-power-tips\/ultraedit\/perl-regular-expressions\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Premiers pas avec Perl regex dans UE<\/span><\/a><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/www.ultraedit.com\/support\/tutorials-power-tips\/ultraedit\/regular-expression-builder\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Constructeur d&rsquo;expressions r\u00e9guli\u00e8res de l&rsquo;UE<\/span><\/a><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/www.ultraedit.com\/support\/tutorials-power-tips\/ultraedit\/regular-expressions\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Aide-m\u00e9moire sur les expressions rationnelles<\/span><\/a><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/www.ultraedit.com\/support\/tutorials-power-tips\/ultraedit\/non-greedy-perl-regex\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Correction des expressions rationnelles<\/span><\/a><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/wiki.ultraedit.com\/Regular_expressions\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Aide-m\u00e9moire sur les expressions rationnelles \u00e0 saveur europ\u00e9enne<\/span><\/a><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h2><span style=\"font-weight: 400;\">Conclusion<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">En conclusion, les expressions r\u00e9guli\u00e8res sont un outil puissant qui peut grandement am\u00e9liorer votre capacit\u00e9 \u00e0 manipuler et \u00e0 analyser des donn\u00e9es textuelles.  <\/span><\/p>\n<p><span style=\"font-weight: 400;\">Qu&rsquo;il s&rsquo;agisse de simples t\u00e2ches de recherche et de remplacement ou de validation et d&rsquo;analyse de donn\u00e9es complexes, les expressions rationnelles offrent une solution polyvalente \u00e0 un large \u00e9ventail de d\u00e9fis. Que vous soyez un d\u00e9veloppeur cherchant \u00e0 rationaliser votre code ou un analyste de donn\u00e9es cherchant \u00e0 extraire des informations significatives de donn\u00e9es brutes, la ma\u00eetrise des regex peut consid\u00e9rablement augmenter votre productivit\u00e9 et votre efficacit\u00e9.   <\/span><\/p>\n<p><span style=\"font-weight: 400;\">Alors que vous continuez \u00e0 explorer les capacit\u00e9s des expressions rationnelles, n&rsquo;oubliez pas que la pratique et l&rsquo;exp\u00e9rimentation sont essentielles pour en exploiter tout le potentiel. Pour ceux qui souhaitent aller plus loin, vous pouvez visionner la vid\u00e9o   <\/span><a href=\"https:\/\/www.youtube.com\/live\/dCTrUlvPmng?feature=shared\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">webinaire<\/span><\/a><span style=\"font-weight: 400;\">  pour des exemples pratiques et concrets et des conseils d&rsquo;experts. Et pour les d\u00e9butants, ne manquez pas la section consacr\u00e9e aux   <\/span><a href=\"https:\/\/youtu.be\/dCTrUlvPmng?t=2027\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Utilisation de mod\u00e8les d&rsquo;IA et de LLM pour cr\u00e9er des regex<\/span><\/a><span style=\"font-weight: 400;\"> pour vous !<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Et si vous travaillez avec du texte et que vous souhaitez exp\u00e9rimenter les regex plus en d\u00e9tail, <\/span><a href=\"https:\/\/www.ultraedit.com\/support\/tutorials-power-tips\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">d\u00e9couvrez UltraEdit<\/span><\/a><span style=\"font-weight: 400;\"> et utilisez-le pour augmenter votre productivit\u00e9.<\/span><\/p>\n<p><a href=\"https:\/\/www.ultraedit.com\/downloads\/ultraedit-download-thank-you\/\">T\u00e9l\u00e9chargez UltraEdit<\/a> pour une version d&rsquo;essai gratuite de 30 jours.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Introduction L&rsquo;utilisation des expressions r\u00e9guli\u00e8res reste l&rsquo;une des techniques les plus sous-estim\u00e9es en mati\u00e8re de manipulation et de recherche de texte. En raison de sa syntaxe peu commune, elle peut sembler \u00e0 premi\u00e8re vue obscure \u00e0 de nombreux novices (et nous ne pouvons pas les bl\u00e2mer !). Cependant, avec un certain nombre d&rsquo;outils utiles et [&hellip;]<\/p>\n","protected":false},"author":15,"featured_media":34863,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","inline_featured_image":false,"footnotes":""},"categories":[433,437],"tags":[438,434,435,436,373],"class_list":["post-35419","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-conseils-en-matiere-denergie","category-recapitulation","tag-expressions-fr","tag-expressions-rationnelles","tag-perl-fr","tag-regulier","tag-ultraedit-fr"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Exemples concrets d&#039;expressions r\u00e9guli\u00e8res (regex) en 2025 - UltraEdit<\/title>\n<meta name=\"description\" content=\"Nous 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