{"id":9411,"date":"2023-11-19T14:31:26","date_gmt":"2023-11-19T13:31:26","guid":{"rendered":"https:\/\/www.mathweb.fr\/euclide\/?p=9411"},"modified":"2023-11-19T14:33:41","modified_gmt":"2023-11-19T13:33:41","slug":"python-et-poo-ajouter-des-durees","status":"publish","type":"post","link":"https:\/\/www.mathweb.fr\/euclide\/2023\/11\/19\/python-et-poo-ajouter-des-durees\/","title":{"rendered":"Python et POO: ajouter des dur\u00e9es"},"content":{"rendered":"\n<p class=\"is-style-Paragraph-paragraph\">Nous allons nous pencher dans cet article sur une mani\u00e8re d&#8217;utiliser la <a href=\"https:\/\/www.mathweb.fr\/euclide\/2019\/09\/06\/les-classes-en-python\/\" target=\"_blank\" rel=\"noreferrer noopener\">POO<\/a> en Python afin d&#8217;ajouter des dur\u00e9es. Oui, j&#8217;aime ce paradigme de programmation&#8230;<\/p>\n\n\n\n<!--more-->\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_83 counter-hierarchy ez-toc-counter ez-toc-white ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Au menu sur cette page...<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/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:\/\/www.mathweb.fr\/euclide\/2023\/11\/19\/python-et-poo-ajouter-des-durees\/#POO_et_Python_ajouter_des_durees_la_classe\" >POO et Python: ajouter des dur\u00e9es, la classe<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.mathweb.fr\/euclide\/2023\/11\/19\/python-et-poo-ajouter-des-durees\/#Le_constrtucteur\" >Le constrtucteur<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.mathweb.fr\/euclide\/2023\/11\/19\/python-et-poo-ajouter-des-durees\/#La_methode_daffichage\" >La m\u00e9thode d&#8217;affichage<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.mathweb.fr\/euclide\/2023\/11\/19\/python-et-poo-ajouter-des-durees\/#La_methode_dajout\" >La m\u00e9thode d&#8217;ajout<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.mathweb.fr\/euclide\/2023\/11\/19\/python-et-poo-ajouter-des-durees\/#POO_et_Python_ajouter_des_durees_les_tests\" >POO et Python: ajouter des dur\u00e9es, les tests<\/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:\/\/www.mathweb.fr\/euclide\/2023\/11\/19\/python-et-poo-ajouter-des-durees\/#Tests_basiques\" >Tests basiques<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.mathweb.fr\/euclide\/2023\/11\/19\/python-et-poo-ajouter-des-durees\/#Tests_avec_boucle\" >Tests avec boucle<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.mathweb.fr\/euclide\/2023\/11\/19\/python-et-poo-ajouter-des-durees\/#POO_et_Python_la_classe_complete\" >POO et Python: la classe compl\u00e8te<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.mathweb.fr\/euclide\/2023\/11\/19\/python-et-poo-ajouter-des-durees\/#POO_et_Python_ajouter_des_durees_adaptation_possible\" >POO et Python: ajouter des dur\u00e9es, adaptation possible<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.mathweb.fr\/euclide\/2023\/11\/19\/python-et-poo-ajouter-des-durees\/#Le_module_%E2%80%9Ctime%E2%80%9D\" >Le module &#8220;time&#8221;<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"POO_et_Python_ajouter_des_durees_la_classe\"><\/span>POO et Python: ajouter des dur\u00e9es, la classe<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Le_constrtucteur\"><\/span>Le constrtucteur<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"python\" data-enlighter-theme=\"dracula\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"false\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class time:\n    def __init__(self,*L):\n        if len(L) != 3:\n            print('Erreur! Vous devez mettre 3 arguments. Ex: time(h,min,sec).')\n        else:\n            self.h = L[0]\n            self.min = L[1]\n            self.sec = L[2]\n        \n            if (L[1] > 60) or (L[2] > 60):\n                r = self + time(0,0,0)\n                self.h = r.h\n                self.min = r.min\n                self.sec = r.sec<\/pre>\n\n\n\n<p class=\"is-style-Paragraph-paragraph\">Ici, j&#8217;ai d\u00e9cid\u00e9 d&#8217;ins\u00e9rer en argument avec l&#8217;op\u00e9rateur <em>splat<\/em> (le &#8220;*&#8221;), pour faciliter la saisie de mon objet ult\u00e9rieurement. Cela permet d&#8217;ins\u00e9rer un argument sous une autre forme qu&#8217;une liste o\u00f9 qu&#8217;un tuple.<\/p>\n\n\n\n<p class=\"is-style-Paragraph-paragraph\">Comme je souhaite construire un objet de la forme:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>time(hh,mm,ss)<\/code><\/pre>\n\n\n\n<p class=\"is-style-Paragraph-paragraph\">je souhaite que la longueur de mon argument soit \u00e9gal \u00e0 3.<\/p>\n\n\n\n<p class=\"is-style-Paragraph-paragraph\">Le test : &#8220;if (L[1] &gt; 60) or (L[2] &gt; 60):&#8221; va me permettre de &#8220;simplifier&#8221; les saisies. Par exemple, on a:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&gt;&gt;&gt; t = time(5,78,89)\n&gt;&gt;&gt; t.h, t.min, t.sec\n(6, 19, 29)<\/code><\/pre>\n\n\n\n<p class=\"is-style-Paragraph-paragraph\">En effet, avoir 78 minutes et 89 secondes ne m&#8217;int\u00e9resse pas. Je veux que le nombre de minutes et de secondes soient compris entre 0 et 59 (inclus).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"La_methode_daffichage\"><\/span>La m\u00e9thode d&#8217;affichage<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"is-style-Paragraph-paragraph\">Afin d&#8217;afficher de fa\u00e7on plus harmonieuse mon objet, je vais impl\u00e9menter la m\u00e9thode qui va nous permettre un affichage format\u00e9:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"python\" data-enlighter-theme=\"dracula\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"false\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">    def __str__(self):\n        return '{} h {:0>2} min {:0>2} s'.format(self.h, self.min, self.sec)<\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>&gt;&gt;&gt; t = time(5,78,89)\n&gt;&gt;&gt; print( t )\n6 h 19 min 29 s\n\n&gt;&gt;&gt; t = time(1,1,1)\n&gt;&gt;&gt; print( t )\n1 h 01 min 01 s<\/code><\/pre>\n\n\n\n<p class=\"is-style-Paragraph-paragraph\">Remarquez que les &#8220;0&#8221; sont automatiquement ins\u00e9r\u00e9s gr\u00e2ce \u00e0 la m\u00e9thode <em>format<\/em>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"La_methode_dajout\"><\/span>La m\u00e9thode d&#8217;ajout<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"python\" data-enlighter-theme=\"dracula\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"false\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">    def __add__(self,b):\n        total_s = self.sec + b.sec\n        retenue = total_s \/\/ 60\n        r_sec = total_s % 60\n        \n        total_m = self.min + b.min + retenue\n        retenue = total_m \/\/ 60\n        r_min = total_m % 60\n        \n        total_h = self.h + b.h + retenue\n        \n        return time( total_h , r_min , r_sec )<\/pre>\n\n\n\n<p class=\"is-style-Paragraph-paragraph\">C&#8217;est cette m\u00e9thode qui nous permet d&#8217;ajouter deux dur\u00e9es.<\/p>\n\n\n\n<p class=\"is-style-Paragraph-paragraph\">Quand, dans le constructeur, j&#8217;ai \u00e9crit:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"python\" data-enlighter-theme=\"dracula\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"false\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">r = self + time(0,0,0)<\/pre>\n\n\n\n<p class=\"is-style-Paragraph-paragraph\">cette op\u00e9ration fait appel \u00e0 cette m\u00e9thode. En effet, quand on tape &#8220;+&#8221;, il se passe quelque chose derri\u00e8re tout \u00e7a&#8230;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"POO_et_Python_ajouter_des_durees_les_tests\"><\/span>POO et Python: ajouter des dur\u00e9es, les tests<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Tests_basiques\"><\/span>Tests basiques<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"is-style-Paragraph-paragraph\">Nous allons maintenant effectuer quelques tests:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&gt;&gt;&gt; print( time(4,5,8) + time(1,1,1) )\n5 h 06 min 09 s<\/code><\/pre>\n\n\n\n<p class=\"is-style-Paragraph-paragraph\">Cet exemple basique nous montre que la m\u00e9thode d&#8217;addition fonctionne. Il faut maintenant v\u00e9rifier que si la somme des secondes et\/ou des minutes est sup\u00e9rieure \u00e0 60, elle affiche le bon r\u00e9sultat:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"python\" data-enlighter-theme=\"dracula\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"false\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">>>> print( time(4,48,8) + time(7,45,54) )\n12 h 34 min 02 s<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Tests_avec_boucle\"><\/span>Tests avec boucle<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"is-style-Paragraph-paragraph\">Pour \u00eatre honn\u00eate avec vous, j&#8217;ai \u00e9crit cette classe car je devais ajouter un grand nombre de dur\u00e9es. Voici la boucle:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"python\" data-enlighter-theme=\"dracula\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"false\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">if __name__ == '__main__':\n    L = [(0,0,23) , (0,1,12), (0,2,3), (0,1,42), (0,1,31), (0,1,24), (0,0,26), (0,1,36), (0,1,10), (0,0,40), (0,0,20), (0,2,51),\\\n         (0,3,49), (0,0,22), (0,1,54), (0,1,59), (0,1,46), (0,2,47), (0,2,51), (0,2,56), (0,3,1), (0,2,52) , (0,2,17), (0,1,25), \\\n         (0,1,22) , (0,5,11), (0,3,46), (0,1,28), (0,2,11), (0,0,24), (0,2,14), (0,0,46), (0,2,48)]\n    \n    s = time(0,0,0)\n    \n    for i in L:\n        s += time(i[0], i[1], i[2])\n        \n    print(s)<\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>&gt;&gt;&gt; 1 h 03 min 27 s<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"POO_et_Python_la_classe_complete\"><\/span>POO et Python: la classe compl\u00e8te<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"python\" data-enlighter-theme=\"dracula\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class time:\n    def __init__(self,*L):\n        if len(L) != 3:\n            print('Erreur! Vous devez mettre 3 arguments. Ex: time(h,min,sec).')\n        else:\n            self.h = L[0]\n            self.min = L[1]\n            self.sec = L[2]\n        \n            if (L[1] > 60) or (L[2] > 60):\n                r = self + time(0,0,0)\n                self.h = r.h\n                self.min = r.min\n                self.sec = r.sec\n        \n    def __str__(self):\n        return '{} h {:0>2} min {:0>2} s'.format(self.h, self.min, self.sec)\n        \n    def __add__(self,b):\n        total_s = self.sec + b.sec\n        retenue = total_s \/\/ 60\n        r_sec = total_s % 60\n        \n        total_m = self.min + b.min + retenue\n        retenue = total_m \/\/ 60\n        r_min = total_m % 60\n        \n        total_h = self.h + b.h + retenue\n        \n        return time( total_h , r_min , r_sec )<\/pre>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"POO_et_Python_ajouter_des_durees_adaptation_possible\"><\/span>POO et Python: ajouter des dur\u00e9es, adaptation possible<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"is-style-Paragraph-paragraph\">Comme vous avez pu le remarquer, je ne compte pas les jours (car cela ne m&#8217;importait peu dans mon cas). Mais il est bien \u00e9videmment possible d&#8217;adapter le constructeur ainsi que la m\u00e9thode d&#8217;addition pour cela.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Le_module_%E2%80%9Ctime%E2%80%9D\"><\/span>Le module &#8220;time&#8221;<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"is-style-Paragraph-paragraph\">Il existe bien entendu une autre m\u00e9thode que de construire cette classe: l&#8217;appel au module <em>time<\/em>. Le code suivant est inspir\u00e9 d&#8217;un code trouv\u00e9 sur la page <a href=\"https:\/\/openclassrooms.com\/forum\/sujet\/addition-d-heures-et-de-minutes\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/openclassrooms.com\/forum\/sujet\/addition-d-heures-et-de-minutes<\/a>.<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"python\" data-enlighter-theme=\"dracula\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"false\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">from datetime import timedelta\n\n>>> t1 = timedelta(hours = 4, minutes = 45, seconds = 56)\n>>> t2 = timedelta(hours = 3, minutes = 13, seconds = 47)\n>>> t = t1 + t2\n>>> print(t)\n7:59:43<\/pre>\n\n\n\n<p class=\"is-style-Paragraph-paragraph\">Mais avouez que la saisie est tout de m\u00eame plus fastidieuse, non ? (taper &#8220;hours&#8221;, &#8220;minutes&#8221;, &#8220;seconds&#8221;&#8230; la gal\u00e8re!).<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Nous allons nous pencher dans cet article sur une mani\u00e8re d&#8217;utiliser la POO en Python afin d&#8217;ajouter des dur\u00e9es. Oui, j&#8217;aime ce paradigme de programmation&#8230;<\/p>\n","protected":false},"author":1,"featured_media":9412,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4,5],"tags":[140,101],"class_list":["post-9411","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-informatique","category-python","tag-poo","tag-python"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Python et POO: ajouter des dur\u00e9es - Mathweb.fr<\/title>\n<meta name=\"description\" content=\"Nous allons nous pencher dans cet article sur une mani\u00e8re d&#039;utiliser la POO en Python afin d&#039;ajouter des dur\u00e9es.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.mathweb.fr\/euclide\/2023\/11\/19\/python-et-poo-ajouter-des-durees\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Python et POO: ajouter des dur\u00e9es - 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