{"id":316,"date":"2015-06-16T20:54:48","date_gmt":"2015-06-16T18:54:48","guid":{"rendered":"http:\/\/wordpress.callac.online\/index.php\/manipulation-de-listes-avec-python\/"},"modified":"2022-01-05T22:41:54","modified_gmt":"2022-01-05T21:41:54","slug":"manipulation-de-listes-avec-python","status":"publish","type":"page","link":"https:\/\/wordpress.callac.online\/index.php\/python\/generalites-sur-python\/manipulation-de-listes-avec-python\/","title":{"rendered":"Manipulation de listes avec Python"},"content":{"rendered":"

Cr\u00e9ation de listes<\/h2>\n

La cr\u00e9ation de listes est d\u00e9taill\u00e9e dans cet article<\/a>.<\/p>\n

Acc\u00e8s aux \u00e9l\u00e9ments de la liste<\/h2>\n
>>> A=[5,3,7,10,8,9]\n>>> print(A)\n[5, 3, 7, 10, 8, 9]\n>>> A[1]\n3\n>>> A[2:]\n[7, 10, 8, 9]\n>>> A[:2]\n[5, 3]\n>>> A[2:4]\n[7, 10]<\/pre>\n

\n<\/code><\/p>\n
– Le premier terme \u00e9tant A[0], A[1] est le deuxi\u00e8me \u00e9l\u00e9ment.
\n– A[2:] renvoie la liste de A[2] jusqu’\u00e0 la fin.
\n– A[:2] renvoie la liste du d\u00e9but jusqu’\u00e0 A[1].
\n– A[2:4] renvoie la liste de A[2] jusqu’\u00e0 A[3].<\/p>\n
Ajout et suppression d’\u00e9l\u00e9ments<\/h2>\n
<\/code><\/p>\n
>>> A=[5,4,3,4,7]\n>>> A\n[5, 4, 3, 4, 7]\n>>> A.append(8)\n>>> A\n[5, 4, 3, 4, 7, 8]\n>>> A.remove(4)\n>>> A\n[5, 3, 4, 7, 8]\n>>> A.pop(1)\n3\n>>> A\n[5, 4, 7, 8]\n>>> A.extend([0,0,7])\n>>> A\n[5, 4, 7, 8, 0, 0, 7]<\/pre>\n
<\/code><\/p>\n
– append()<\/em> ajoute un \u00e9l\u00e9ment en fin de liste.
\n– remove()<\/em> enl\u00e8ve la premi\u00e8re occurrence de la valeur.
\n– pop()<\/em> enl\u00e8ve la valeur \u00e0 l’index donn\u00e9e et renvoie cette valeur.
\n– extend()<\/em> ajoute une liste en fin de liste.<\/p>\n
Divers<\/h2>\n
<\/code><\/p>\n
>>> A=[4,7,8,7,2]\n>>> A\n[4, 7, 8, 7, 2]\n>>> A.index(7)\n1\n>>> A\n[4, 7, 8, 7, 2]\n>>> A.count(7)\n2\n>>> A\n[4, 7, 8, 7, 2]\n>>> A.sort()\n>>> A\n[2, 4, 7, 7, 8]\n>>> B=[3,5,0,8]\n[0, 3, 5, 8]\n>>> B\n[3, 5, 0, 8]\n>>> B.reverse()\n>>> B\n[8, 0, 5, 3]\n>>> len(B)\n4<\/pre>\n
<\/code><\/p>\n
– index()<\/em> renvoie le premier index de la valeur donn\u00e9e.
\n– count()<\/em> renvoie le nombre de valeurs \u00e9gales \u00e0 la valeur donn\u00e9e.
\n– sort()<\/em> modifie la liste en la triant.
\n– La fonction sorted()<\/em> renvoie une liste tri\u00e9e sans modifier la liste initiale.
\n– reverse()<\/em> renvoie la liste \u00e0 l’envers.
\n– La fonction len()<\/em> renvoie la longueur de la liste.<\/p>\n","protected":false},"excerpt":{"rendered":"
Cr\u00e9ation de listes La cr\u00e9ation de listes est d\u00e9taill\u00e9e dans cet article. Acc\u00e8s aux \u00e9l\u00e9ments de la liste >>> A=[5,3,7,10,8,9] >>> print(A) [5, 3, 7, 10, 8, 9] >>> A[1]…<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":1649,"menu_order":6,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-316","page","type-page","status-publish","hentry"],"yoast_head":"\nManipulation de listes avec Python - Maths & Num\u00e9rique<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/wordpress.callac.online\/index.php\/python\/generalites-sur-python\/manipulation-de-listes-avec-python\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Manipulation de listes avec Python - Maths & Num\u00e9rique\" \/>\n<meta property=\"og:description\" content=\"Cr\u00e9ation de listes La cr\u00e9ation de listes est d\u00e9taill\u00e9e dans cet article. 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