{"id":20503,"date":"2022-12-07T06:06:00","date_gmt":"2022-12-07T05:06:00","guid":{"rendered":"https:\/\/expert-only.com\/?p=20503"},"modified":"2023-01-15T18:10:10","modified_gmt":"2023-01-15T17:10:10","slug":"introduction-au-langage-python","status":"publish","type":"post","link":"https:\/\/expert-only.com\/fr\/python\/introduction-au-langage-python\/","title":{"rendered":"Introduction au langage Python"},"content":{"rendered":"\n<h4 class=\"has-text-align-center wp-block-heading\"><strong><em>Introduction au langage de programmation Python avec les concepts fondamentaux.<\/em><\/strong><\/h4>\n\n\n\n<p>Ceci est une introduction au langage Python, qui est un langage de programmation interpr\u00e9t\u00e9 de haut niveau. Il est largement utilis\u00e9 pour le d\u00e9veloppement Web, l&rsquo;analyse de donn\u00e9es, l&rsquo;intelligence artificielle et le calcul scientifique.<\/p>\n\n\n\n<p>Il a \u00e9t\u00e9 cr\u00e9\u00e9 par <a href=\"https:\/\/en.wikipedia.org\/wiki\/Guido_van_Rossum\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Guido van Rossum<\/a> \u00e0 la fin des ann\u00e9es 1980 et est devenu depuis l&rsquo;un des langages de programmation les plus populaires au monde. Sa simplicit\u00e9 et sa lisibilit\u00e9 en font un langage id\u00e9al pour les d\u00e9butants, et sa vaste biblioth\u00e8que standard offre aux utilisateurs un large \u00e9ventail de modules et de fonctions pr\u00e9\u00e9tablis.<\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 ez-toc-wrap-center counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/expert-only.com\/fr\/python\/introduction-au-langage-python\/#1-presentation-des-modules-python\" >1. Pr\u00e9sentation des modules 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:\/\/expert-only.com\/fr\/python\/introduction-au-langage-python\/#2-introduction-aux-fonctions-web-de-python\" >2. Introduction aux fonctions web de 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:\/\/expert-only.com\/fr\/python\/introduction-au-langage-python\/#3-les-outils-de-developpement-et-de-tests-python\" >3. Les outils de d\u00e9veloppement et de tests Python<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/expert-only.com\/fr\/python\/introduction-au-langage-python\/#4-exemple-de-code-python\" >4. Exemple de code 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:\/\/expert-only.com\/fr\/python\/introduction-au-langage-python\/#5-conclusion-avec-les-forces-et-faiblesses-de-python\" >5. Conclusion avec les forces et faiblesses de Python<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/expert-only.com\/fr\/python\/introduction-au-langage-python\/#51-points-forts-de-python\" >5.1 Points forts de Python<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/expert-only.com\/fr\/python\/introduction-au-langage-python\/#52-points-faibles-de-python\" >5.2 Points faibles de Python<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1-presentation-des-modules-python\"><\/span>1. Pr\u00e9sentation des modules Python <span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Python permet d&rsquo;int\u00e9grer un certain nombre de fonctions et de modules pour la lecture et l&rsquo;\u00e9criture de fichiers, et peut g\u00e9rer une vari\u00e9t\u00e9 de formats de fichiers, notamment des fichiers texte, CSV et binaires, entre autres.<\/p>\n\n\n\n<p>Il utilise aussi des biblioth\u00e8ques pour acc\u00e9der \u00e0 des <a href=\"https:\/\/expert-only.com\/mysql\/creer-et-modifier-une-table-mysql\/\">bases de donn\u00e9es telles que MySQL<\/a>, PostgreSQL mais aussi SQL Server, qui permettent aux utilisateurs de se connecter, d&rsquo;ex\u00e9cuter des requ\u00eates SQL et de r\u00e9cup\u00e9rer les r\u00e9sultats.<\/p>\n\n\n\n<p>Python dispose d&rsquo;un certain nombre de biblioth\u00e8ques tierces pour travailler avec les donn\u00e9es, notamment <a href=\"https:\/\/numpy.org\/\" target=\"_blank\" rel=\"noreferrer noopener\">NumPy<\/a> pour le calcul scientifique, pandas pour l&rsquo;analyse des donn\u00e9es et scikit-learn pour l&rsquo;apprentissage automatique. Ces biblioth\u00e8ques fournissent aux utilisateurs un large \u00e9ventail de fonctions et d&rsquo;outils pour manipuler, analyser et visualiser les donn\u00e9es.<\/p>\n\n\n\n<p>Voici une liste non exhaustive de quelques libraires populaires pour illustrer cette introduction au langage Python :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>NumPy <\/strong>&#8211; biblioth\u00e8que pour le calcul scientifique avec Python, qui prend en charge les tableaux et matrices multidimensionnels de grande taille contenant des donn\u00e9es num\u00e9riques.<\/li>\n\n\n\n<li><strong>pandas<\/strong> &#8211; biblioth\u00e8que pour la manipulation et l&rsquo;analyse de donn\u00e9es qui prend en charge les structures de donn\u00e9es et les outils d&rsquo;analyse de donn\u00e9es pour la manipulation de grands ensembles de donn\u00e9es.<\/li>\n\n\n\n<li><strong>Django<\/strong> &#8211; un framework web complet pour la cr\u00e9ation de sites web complexes, pilot\u00e9s par des bases de donn\u00e9es.<\/li>\n\n\n\n<li><strong>Flask <\/strong>&#8211; un cadre microweb pour la cr\u00e9ation d&rsquo;applications Web et d&rsquo;API.<\/li>\n\n\n\n<li><strong>scikit-learn<\/strong> &#8211; une biblioth\u00e8que pour l&rsquo;apprentissage automatique qui fournit une gamme d&rsquo;algorithmes et d&rsquo;outils pour former et tester des mod\u00e8les.<\/li>\n\n\n\n<li><strong>PyQt<\/strong> &#8211; biblioth\u00e8que permettant de cr\u00e9er des interfaces utilisateur graphiques (GUI) avec Python.<\/li>\n\n\n\n<li><strong>TensorFlow<\/strong> &#8211; une biblioth\u00e8que pour l&rsquo;apprentissage automatique et l&rsquo;intelligence artificielle qui permet aux utilisateurs de cr\u00e9er et d&rsquo;entra\u00eener des r\u00e9seaux neuronaux.<\/li>\n\n\n\n<li><strong>Pygame<\/strong> &#8211; biblioth\u00e8que permettant de cr\u00e9er des jeux avec Python. Elle prend en charge les graphiques, le son et les entr\u00e9es\/sorties.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-embed is-type-wp-embed is-provider-tutoriels-sql-et-it wp-block-embed-tutoriels-sql-et-it\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"wp-embedded-content\" data-secret=\"MiYPQaH7Lp\"><a href=\"https:\/\/expert-only.com\/fr\/mysql\/creer-et-modifier-une-table-mysql\/\">Cr\u00e9er et modifier une table MySQL<\/a><\/blockquote><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; clip: rect(1px, 1px, 1px, 1px);\" title=\"\u00ab\u00a0Cr\u00e9er et modifier une table MySQL\u00a0\u00bb &#8212; Tutoriels SQL et IT\" src=\"https:\/\/expert-only.com\/fr\/mysql\/creer-et-modifier-une-table-mysql\/embed\/#?secret=UxYXy6AvId#?secret=MiYPQaH7Lp\" data-secret=\"MiYPQaH7Lp\" width=\"500\" height=\"282\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe>\n<\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-2-introduction-aux-fonctions-web-de-python\"><span class=\"ez-toc-section\" id=\"2-introduction-aux-fonctions-web-de-python\"><\/span>2. Introduction aux fonctions web de Python<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Pour continuer cette introduction, le langage Python dispose aussi de biblioth\u00e8ques permettant de travailler avec des technologies web, telles que Django, qui est un Framework web complet. Et des biblioth\u00e8ques permettant de travailler avec des services web comme <a href=\"https:\/\/palletsprojects.com\/p\/flask\/\" target=\"_blank\" rel=\"noreferrer noopener\">Flask<\/a> et Pyramid. Il permet \u00e9galement d&rsquo;int\u00e9grer des biblioth\u00e8ques pour l&rsquo;analyse et le traitement de documents aux formats HTML, XML et JSON.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3-les-outils-de-developpement-et-de-tests-python\"><\/span>3. Les outils de d\u00e9veloppement et de tests Python<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Python dispose \u00e9galement d&rsquo;un certain nombre d&rsquo;outils pour le d\u00e9veloppement et le test de logiciels, notamment des cadres de test unitaire, des outils de couverture de code et des outils d&rsquo;analyse statique, qui aident les d\u00e9veloppeurs \u00e0 \u00e9crire un code fiable et maintenable et \u00e0 garantir des logiciels de haute qualit\u00e9.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4-exemple-de-code-python\"><\/span>4. Exemple de code python<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Voici un exemple simple de code Python qui d\u00e9finit une fonction pour calculer l&rsquo;aire d&rsquo;un rectangle, en se basant sur les 2 arguments suivants : <\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>La largeur<\/li>\n\n\n\n<li>La hauteur<\/li>\n<\/ol>\n\n\n\n<p>Ce code d\u00e9finit ainsi une fonction <strong><code>aire_rectangle()<\/code><\/strong> qui prend deux arguments, <code><strong>largeur<\/strong><\/code> et <code><strong>hauteur<\/strong><\/code>, et renvoie le produit de ces deux valeurs. La fonction est ensuite appel\u00e9e avec diff\u00e9rents ensembles d&rsquo;arguments, et le r\u00e9sultat est imprim\u00e9 sur la console via la fonction <code><strong>print()<\/strong><\/code>. Dans cet exemple on note la simplicit\u00e9 du code.<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"python\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">def aire_rectangle(largeur, hauteur):\n  return largeur * hauteur\n\nprint(aire_rectangle(5, 10))\n# imprime 50\n\nprint(aire_rectangle(3, 7))\n# imprime 21\n<\/pre>\n\n\n\n<figure class=\"wp-block-embed is-type-wp-embed is-provider-tutoriels-sql-et-it wp-block-embed-tutoriels-sql-et-it\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"wp-embedded-content\" data-secret=\"swxTMoDlKx\"><a href=\"https:\/\/expert-only.com\/fr\/ps\/copier-des-fichiers-recursivement-powershell\/\">Comment copier des fichiers r\u00e9cursivement en PowerShell?<\/a><\/blockquote><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; clip: rect(1px, 1px, 1px, 1px);\" title=\"\u00ab\u00a0Comment copier des fichiers r\u00e9cursivement en PowerShell?\u00a0\u00bb &#8212; Tutoriels SQL et IT\" src=\"https:\/\/expert-only.com\/fr\/ps\/copier-des-fichiers-recursivement-powershell\/embed\/#?secret=6DIvfM3l4n#?secret=swxTMoDlKx\" data-secret=\"swxTMoDlKx\" width=\"500\" height=\"282\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe>\n<\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5-conclusion-avec-les-forces-et-faiblesses-de-python\"><\/span>5. Conclusion avec les forces et faiblesses de Python<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Pour conclure cette br\u00e8ve introduction au langage Python, c&rsquo;est donc un langage de programmation puissant et polyvalent qui offre un large \u00e9ventail d&rsquo;applications.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"51-points-forts-de-python\"><\/span>5.1 Points forts de Python<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Voici quelques points forts  :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Une syntaxe simple et expressive, facile \u00e0 lire et \u00e0 comprendre.<\/li>\n\n\n\n<li>Sa biblioth\u00e8que standard \u00e9tendue qui fournit un large \u00e9ventail de fonctionnalit\u00e9s pr\u00eates \u00e0 l&#8217;emploi<\/li>\n\n\n\n<li>Une communaut\u00e9 importante et active de d\u00e9veloppeurs, avec une multitude de biblioth\u00e8ques et de Frameworks tiers disponibles.<\/li>\n\n\n\n<li>Une flexibilit\u00e9 et une polyvalence qui lui permettent d&rsquo;\u00eatre utilis\u00e9 pour un large \u00e9ventail d&rsquo;applications.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"52-points-faibles-de-python\"><\/span>5.2 Points faibles de Python<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Cependant, Python pr\u00e9sente \u00e9galement certaines limites et faiblesses qui m\u00e9ritent d&rsquo;\u00eatre prises en compte :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>C&rsquo;est un langage interpr\u00e9t\u00e9, donc potentiellement plus lent que les langages compil\u00e9s comme le C ou le C++, qui sont des langage bas niveaux.<\/li>\n\n\n\n<li>Sa nature de typage dynamique peut le rendre plus vuln\u00e9rable aux erreurs d&rsquo;ex\u00e9cution et rendre le code plus difficile \u00e0 d\u00e9boguer.<\/li>\n\n\n\n<li>Sa simplicit\u00e9 peut le rendre moins adapt\u00e9 aux t\u00e2ches de bas niveau ou \u00e0 la programmation de syst\u00e8mes.<\/li>\n<\/ul>\n\n\n\n<p>Enfin, dans l&rsquo;ensemble, Python est un langage tr\u00e8s puissant et tr\u00e8s populaire, bien adapt\u00e9 \u00e0 un large \u00e9ventail de t\u00e2ches. Sa simplicit\u00e9 et sa flexibilit\u00e9 en font un excellent choix pour les d\u00e9butants. Tandis que sa vaste biblioth\u00e8que standard et sa grande communaut\u00e9 de d\u00e9veloppeurs en font un outil utile pour les programmeurs les plus exp\u00e9riment\u00e9s.<\/p>\n","protected":false},"excerpt":{"rendered":"<div class=\"mh-excerpt\"><p>Introduction au langage de programmation Python avec les concepts fondamentaux. Ceci est une introduction au langage Python, qui est un langage de programmation interpr\u00e9t\u00e9 de haut niveau. Il est largement utilis\u00e9 pour le d\u00e9veloppement Web, l&rsquo;analyse de donn\u00e9es, l&rsquo;intelligence <a class=\"mh-excerpt-more\" href=\"https:\/\/expert-only.com\/fr\/python\/introduction-au-langage-python\/\" title=\"Introduction au langage Python\">&#8230;<\/a><\/p>\n<\/div>","protected":false},"author":1,"featured_media":10942,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[656],"tags":[],"class_list":{"0":"post-20503","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-python"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.7 (Yoast SEO v26.2) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Introduction au langage Python - Programmation - Tutoriels Python<\/title>\n<meta name=\"description\" content=\"Introduction au langage de programmation Python avec ses concepts fondamentaux comme les syntaxes, les fonctions et les modules.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/expert-only.com\/fr\/python\/introduction-au-langage-python\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Introduction au langage Python\" \/>\n<meta property=\"og:description\" content=\"Introduction au langage de programmation Python avec ses concepts fondamentaux comme les syntaxes, les fonctions et les modules.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/expert-only.com\/fr\/python\/introduction-au-langage-python\/\" \/>\n<meta property=\"og:site_name\" content=\"Tutoriels SQL et IT\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/ExpertOnlyCom\/\" \/>\n<meta property=\"article:published_time\" content=\"2022-12-07T05:06:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-01-15T17:10:10+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/expert-only.com\/wp-content\/uploads\/2022\/09\/work-DE8FCB57747_1920x1080.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1920\" \/>\n\t<meta property=\"og:image:height\" content=\"1080\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Expert-Only\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@expert_only\" \/>\n<meta name=\"twitter:site\" content=\"@expert_only\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"Expert-Only\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/expert-only.com\/fr\/python\/introduction-au-langage-python\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/expert-only.com\/fr\/python\/introduction-au-langage-python\/\"},\"author\":{\"name\":\"Expert-Only\",\"@id\":\"https:\/\/expert-only.com\/fr\/#\/schema\/person\/406a9576b52944f018739a42046873ef\"},\"headline\":\"Introduction au langage Python\",\"datePublished\":\"2022-12-07T05:06:00+00:00\",\"dateModified\":\"2023-01-15T17:10:10+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/expert-only.com\/fr\/python\/introduction-au-langage-python\/\"},\"wordCount\":966,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/expert-only.com\/fr\/#organization\"},\"image\":{\"@id\":\"https:\/\/expert-only.com\/fr\/python\/introduction-au-langage-python\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/expert-only.com\/wp-content\/uploads\/2022\/09\/work-DE8FCB57747_1920x1080.jpg\",\"articleSection\":[\"Python\"],\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/expert-only.com\/fr\/python\/introduction-au-langage-python\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/expert-only.com\/fr\/python\/introduction-au-langage-python\/\",\"url\":\"https:\/\/expert-only.com\/fr\/python\/introduction-au-langage-python\/\",\"name\":\"Introduction au langage Python - 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