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juridiques","\u002Fsnt-2nde\u002Fsb-web\u002Fsecurite-droits","0.snt-2nde\u002Fsb-web\u002F6.securite-droits",{"title":67,"path":68,"stem":69,"children":70},"Les réseaux sociaux","\u002Fsnt-2nde\u002Fsc-reseaux-sociaux","0.snt-2nde\u002Fsc-reseaux-sociaux\u002F0.index",[71,72,76,80,84,88],{"title":67,"path":68,"stem":69},{"title":73,"path":74,"stem":75},"Panorama des réseaux sociaux","\u002Fsnt-2nde\u002Fsc-reseaux-sociaux\u002Fpanorama-rs","0.snt-2nde\u002Fsc-reseaux-sociaux\u002F1.panorama-rs",{"title":77,"path":78,"stem":79},"Identité numérique et authentification","\u002Fsnt-2nde\u002Fsc-reseaux-sociaux\u002Fidentite-numerique","0.snt-2nde\u002Fsc-reseaux-sociaux\u002F2.identite-numerique",{"title":81,"path":82,"stem":83},"Le modèle économique des réseaux sociaux","\u002Fsnt-2nde\u002Fsc-reseaux-sociaux\u002Fmodele-economique","0.snt-2nde\u002Fsc-reseaux-sociaux\u002F3.modele-economique",{"title":85,"path":86,"stem":87},"Petit monde et graphes","\u002Fsnt-2nde\u002Fsc-reseaux-sociaux\u002Fpetit-monde-graphes","0.snt-2nde\u002Fsc-reseaux-sociaux\u002F4.petit-monde-graphes",{"title":89,"path":90,"stem":91},"La cyberviolence","\u002Fsnt-2nde\u002Fsc-reseaux-sociaux\u002Fcyberviolence","0.snt-2nde\u002Fsc-reseaux-sociaux\u002F5.cyberviolence",{"title":93,"path":94,"stem":95,"children":96},"Les données structurées et leur traitement","\u002Fsnt-2nde\u002Fsd-donnees-structurees","0.snt-2nde\u002Fsd-donnees-structurees\u002F0.index",[97,98,102,106,110,114],{"title":93,"path":94,"stem":95},{"title":99,"path":100,"stem":101},"Données et formats","\u002Fsnt-2nde\u002Fsd-donnees-structurees\u002Fdonnees-formats","0.snt-2nde\u002Fsd-donnees-structurees\u002F1.donnees-formats",{"title":103,"path":104,"stem":105},"Données 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position","\u002Fsnt-2nde\u002Fse-localisation-cartographie\u002Fconfidentialite-position","0.snt-2nde\u002Fse-localisation-cartographie\u002F5.confidentialite-position",{"title":145,"path":146,"stem":147,"children":148},"Informatique embarquée et objets connectés","\u002Fsnt-2nde\u002Fsf-info-embarquee","0.snt-2nde\u002Fsf-info-embarquee\u002F0.index",[149,150,154,158],{"title":145,"path":146,"stem":147},{"title":151,"path":152,"stem":153},"Systèmes informatiques embarqués","\u002Fsnt-2nde\u002Fsf-info-embarquee\u002Fsystemes-embarques","0.snt-2nde\u002Fsf-info-embarquee\u002F1.systemes-embarques",{"title":155,"path":156,"stem":157},"Capteurs et actionneurs","\u002Fsnt-2nde\u002Fsf-info-embarquee\u002Fcapteurs-actionneurs","0.snt-2nde\u002Fsf-info-embarquee\u002F2.capteurs-actionneurs",{"title":159,"path":160,"stem":161},"IHM et objets connectés","\u002Fsnt-2nde\u002Fsf-info-embarquee\u002Fihm-objet-connecte","0.snt-2nde\u002Fsf-info-embarquee\u002F3.ihm-objet-connecte",{"title":163,"path":164,"stem":165,"children":166},"Photographie numérique","\u002Fsnt-2nde\u002Fsg-photo-numerique","0.snt-2nde\u002Fsg-photo-numerique\u002F0.index",[167,168,172,176,180],{"title":163,"path":164,"stem":165},{"title":169,"path":170,"stem":171},"Photosites, pixels et résolution","\u002Fsnt-2nde\u002Fsg-photo-numerique\u002Fpixels-resolution","0.snt-2nde\u002Fsg-photo-numerique\u002F1.pixels-resolution",{"title":173,"path":174,"stem":175},"Les algorithmes de l'appareil photo","\u002Fsnt-2nde\u002Fsg-photo-numerique\u002Falgorithmes-photo","0.snt-2nde\u002Fsg-photo-numerique\u002F2.algorithmes-photo",{"title":177,"path":178,"stem":179},"Les métadonnées EXIF","\u002Fsnt-2nde\u002Fsg-photo-numerique\u002Fmetadonnees-exif","0.snt-2nde\u002Fsg-photo-numerique\u002F3.metadonnees-exif",{"title":181,"path":182,"stem":183},"Traiter une image en Python","\u002Fsnt-2nde\u002Fsg-photo-numerique\u002Ftraitement-rgb","0.snt-2nde\u002Fsg-photo-numerique\u002F4.traitement-rgb",{"title":185,"path":186,"stem":187,"children":188},"Notions transversales de programmation","\u002Fsnt-2nde\u002Fsh-prog-notions","0.snt-2nde\u002Fsh-prog-notions\u002F0.index",[189,190,194,198,202],{"title":185,"path":186,"stem":187},{"title":191,"path":192,"stem":193},"Séquences d'instructions et variables","\u002Fsnt-2nde\u002Fsh-prog-notions\u002Fsequences-affectations","0.snt-2nde\u002Fsh-prog-notions\u002F1.sequences-affectations",{"title":195,"path":196,"stem":197},"Instructions conditionnelles","\u002Fsnt-2nde\u002Fsh-prog-notions\u002Fconditionnelles","0.snt-2nde\u002Fsh-prog-notions\u002F2.conditionnelles",{"title":199,"path":200,"stem":201},"Boucles bornées et non bornées","\u002Fsnt-2nde\u002Fsh-prog-notions\u002Fboucles","0.snt-2nde\u002Fsh-prog-notions\u002F3.boucles",{"title":203,"path":204,"stem":205},"Définitions et appels de fonctions","\u002Fsnt-2nde\u002Fsh-prog-notions\u002Ffonctions","0.snt-2nde\u002Fsh-prog-notions\u002F4.fonctions",{"title":207,"path":208,"stem":209,"children":210},"Démo des widgets MDC","\u002Fsnt-2nde\u002Fzz-demo-widgets","0.snt-2nde\u002Fzz-demo-widgets\u002F0.index",[211,212,216,220],{"title":207,"path":208,"stem":209},{"title":213,"path":214,"stem":215},"Démo statique — callouts, code, BO, illustration","\u002Fsnt-2nde\u002Fzz-demo-widgets\u002Fstatique","0.snt-2nde\u002Fzz-demo-widgets\u002F1.statique",{"title":217,"path":218,"stem":219},"Démo interactive — self-eval et python-snippet","\u002Fsnt-2nde\u002Fzz-demo-widgets\u002Finteractif","0.snt-2nde\u002Fzz-demo-widgets\u002F2.interactif",{"title":221,"path":222,"stem":223},"Démo · 14 widgets de manipulation NSI","\u002Fsnt-2nde\u002Fzz-demo-widgets\u002Fwidgets-manipulation","0.snt-2nde\u002Fzz-demo-widgets\u002F3.widgets-manipulation",{"title":225,"path":226,"stem":227,"children":228},"NSI — 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deux","\u002Fnsi-1ere\u002Fpb-types-valeurs\u002Fentiers-relatifs","1.nsi-1ere\u002Fpb-types-valeurs\u002F2.entiers-relatifs",{"title":271,"path":272,"stem":273},"Nombres flottants et virgule flottante","\u002Fnsi-1ere\u002Fpb-types-valeurs\u002Fflottants","1.nsi-1ere\u002Fpb-types-valeurs\u002F3.flottants",{"title":275,"path":276,"stem":277},"Textes et encodages — ASCII, ISO-8859-1, Unicode","\u002Fnsi-1ere\u002Fpb-types-valeurs\u002Ftextes-encodages","1.nsi-1ere\u002Fpb-types-valeurs\u002F4.textes-encodages",{"title":279,"path":280,"stem":281},"Valeurs booléennes et opérateurs logiques","\u002Fnsi-1ere\u002Fpb-types-valeurs\u002Fbooleens","1.nsi-1ere\u002Fpb-types-valeurs\u002F5.booleens",{"title":283,"path":284,"stem":285,"children":286},"Représentation des données : types construits","\u002Fnsi-1ere\u002Fpc-types-construits","1.nsi-1ere\u002Fpc-types-construits\u002F0.index",[287,288,292,296,300],{"title":283,"path":284,"stem":285},{"title":289,"path":290,"stem":291},"Tableaux et listes","\u002Fnsi-1ere\u002Fpc-types-construits\u002Ftableaux-listes","1.nsi-1ere\u002Fpc-types-construits\u002F1.tableaux-listes",{"title":293,"path":294,"stem":295},"Listes en compréhension","\u002Fnsi-1ere\u002Fpc-types-construits\u002Fcomprehension","1.nsi-1ere\u002Fpc-types-construits\u002F2.comprehension",{"title":297,"path":298,"stem":299},"Tuples et p-uplets nommés","\u002Fnsi-1ere\u002Fpc-types-construits\u002Ftuples","1.nsi-1ere\u002Fpc-types-construits\u002F3.tuples",{"title":301,"path":302,"stem":303},"Dictionnaires","\u002Fnsi-1ere\u002Fpc-types-construits\u002Fdictionnaires","1.nsi-1ere\u002Fpc-types-construits\u002F4.dictionnaires",{"title":305,"path":306,"stem":307,"children":308},"Traitement de données en tables","\u002Fnsi-1ere\u002Fpd-tables-donnees","1.nsi-1ere\u002Fpd-tables-donnees\u002F0.index",[309,310,314,318,322],{"title":305,"path":306,"stem":307},{"title":311,"path":312,"stem":313},"Tables et CSV","\u002Fnsi-1ere\u002Fpd-tables-donnees\u002Ftables-csv","1.nsi-1ere\u002Fpd-tables-donnees\u002F1.tables-csv",{"title":315,"path":316,"stem":317},"Recherche et filtrage","\u002Fnsi-1ere\u002Fpd-tables-donnees\u002Frecherche","1.nsi-1ere\u002Fpd-tables-donnees\u002F2.recherche",{"title":319,"path":320,"stem":321},"Trier une table","\u002Fnsi-1ere\u002Fpd-tables-donnees\u002Ftri","1.nsi-1ere\u002Fpd-tables-donnees\u002F3.tri",{"title":323,"path":324,"stem":325,"children":326},"Fusion et indexation","\u002Fnsi-1ere\u002Fpd-tables-donnees\u002Ffusion-indexation","1.nsi-1ere\u002Fpd-tables-donnees\u002F4.fusion-indexation",[327],{"title":323,"path":324,"stem":325},{"title":329,"path":330,"stem":331,"children":332},"IHM sur le Web","\u002Fnsi-1ere\u002Fpe-ihm-web","1.nsi-1ere\u002Fpe-ihm-web\u002F0.index",[333,334,338,342,346,350],{"title":329,"path":330,"stem":331},{"title":335,"path":336,"stem":337},"HTML et CSS — rappel de structure","\u002Fnsi-1ere\u002Fpe-ihm-web\u002Fhtml-css-bases","1.nsi-1ere\u002Fpe-ihm-web\u002F1.html-css-bases",{"title":339,"path":340,"stem":341},"Formulaires HTML","\u002Fnsi-1ere\u002Fpe-ihm-web\u002Fformulaires","1.nsi-1ere\u002Fpe-ihm-web\u002F2.formulaires",{"title":343,"path":344,"stem":345},"Événements JavaScript","\u002Fnsi-1ere\u002Fpe-ihm-web\u002Fevenements-js","1.nsi-1ere\u002Fpe-ihm-web\u002F3.evenements-js",{"title":347,"path":348,"stem":349},"Manipulation du DOM","\u002Fnsi-1ere\u002Fpe-ihm-web\u002Fdom-interaction","1.nsi-1ere\u002Fpe-ihm-web\u002F4.dom-interaction",{"title":351,"path":352,"stem":353},"Client, serveur et HTTP","\u002Fnsi-1ere\u002Fpe-ihm-web\u002Fclient-serveur-http","1.nsi-1ere\u002Fpe-ihm-web\u002F5.client-serveur-http",{"title":355,"path":356,"stem":357,"children":358},"Architectures matérielles et systèmes d'exploitation","\u002Fnsi-1ere\u002Fpf-archi-os","1.nsi-1ere\u002Fpf-archi-os\u002F0.index",[359,360,364,368,372,376],{"title":355,"path":356,"stem":357},{"title":361,"path":362,"stem":363},"Le modèle de von Neumann","\u002Fnsi-1ere\u002Fpf-archi-os\u002Fvon-neumann","1.nsi-1ere\u002Fpf-archi-os\u002F1.von-neumann",{"title":365,"path":366,"stem":367},"Périphériques et interface homme-machine","\u002Fnsi-1ere\u002Fpf-archi-os\u002Fperipheriques-ihm","1.nsi-1ere\u002Fpf-archi-os\u002F2.peripheriques-ihm",{"title":369,"path":370,"stem":371},"Les systèmes d'exploitation","\u002Fnsi-1ere\u002Fpf-archi-os\u002Fsystemes-exploitation","1.nsi-1ere\u002Fpf-archi-os\u002F3.systemes-exploitation",{"title":373,"path":374,"stem":375},"Linux et le shell","\u002Fnsi-1ere\u002Fpf-archi-os\u002Flinux-shell","1.nsi-1ere\u002Fpf-archi-os\u002F4.linux-shell",{"title":377,"path":378,"stem":379},"Réseaux et protocoles","\u002Fnsi-1ere\u002Fpf-archi-os\u002Freseaux","1.nsi-1ere\u002Fpf-archi-os\u002F5.reseaux",{"title":381,"path":382,"stem":383,"children":384},"Langages et programmation","\u002Fnsi-1ere\u002Fpg-langages-prog","1.nsi-1ere\u002Fpg-langages-prog\u002F0.index",[385,386,390,394,398,402,406],{"title":381,"path":382,"stem":383},{"title":387,"path":388,"stem":389},"Diversité et unité des langages de programmation","\u002Fnsi-1ere\u002Fpg-langages-prog\u002Fdiversite-langages","1.nsi-1ere\u002Fpg-langages-prog\u002F1.diversite-langages",{"title":391,"path":392,"stem":393},"Constructions élémentaires","\u002Fnsi-1ere\u002Fpg-langages-prog\u002Fconstructions-elementaires","1.nsi-1ere\u002Fpg-langages-prog\u002F2.constructions-elementaires",{"title":395,"path":396,"stem":397},"Fonctions","\u002Fnsi-1ere\u002Fpg-langages-prog\u002Ffonctions","1.nsi-1ere\u002Fpg-langages-prog\u002F3.fonctions",{"title":399,"path":400,"stem":401},"Spécification d'une fonction","\u002Fnsi-1ere\u002Fpg-langages-prog\u002Fspecification","1.nsi-1ere\u002Fpg-langages-prog\u002F4.specification",{"title":403,"path":404,"stem":405},"Mise au point des programmes","\u002Fnsi-1ere\u002Fpg-langages-prog\u002Fmise-au-point","1.nsi-1ere\u002Fpg-langages-prog\u002F5.mise-au-point",{"title":407,"path":408,"stem":409},"Utilisation de bibliothèques","\u002Fnsi-1ere\u002Fpg-langages-prog\u002Fbibliotheques","1.nsi-1ere\u002Fpg-langages-prog\u002F6.bibliotheques",{"title":411,"path":412,"stem":413,"children":414},"Algorithmique","\u002Fnsi-1ere\u002Fph-algorithmique","1.nsi-1ere\u002Fph-algorithmique\u002F0.index",[415,416,420,424,428,432,436],{"title":411,"path":412,"stem":413},{"title":417,"path":418,"stem":419},"Parcours séquentiel d'un tableau","\u002Fnsi-1ere\u002Fph-algorithmique\u002Fparcours-sequentiel","1.nsi-1ere\u002Fph-algorithmique\u002F1.parcours-sequentiel",{"title":421,"path":422,"stem":423},"Bases de la complexité","\u002Fnsi-1ere\u002Fph-algorithmique\u002Fcomplexite-bases","1.nsi-1ere\u002Fph-algorithmique\u002F2.complexite-bases",{"title":425,"path":426,"stem":427},"Tris par sélection et par insertion","\u002Fnsi-1ere\u002Fph-algorithmique\u002Ftris","1.nsi-1ere\u002Fph-algorithmique\u002F3.tris",{"title":429,"path":430,"stem":431},"Recherche dichotomique","\u002Fnsi-1ere\u002Fph-algorithmique\u002Fdichotomie","1.nsi-1ere\u002Fph-algorithmique\u002F4.dichotomie",{"title":433,"path":434,"stem":435},"Algorithmes gloutons","\u002Fnsi-1ere\u002Fph-algorithmique\u002Fgloutons","1.nsi-1ere\u002Fph-algorithmique\u002F5.gloutons",{"title":437,"path":438,"stem":439},"Les k plus proches voisins (k-NN)","\u002Fnsi-1ere\u002Fph-algorithmique\u002Fknn","1.nsi-1ere\u002Fph-algorithmique\u002F6.knn",{"title":441,"path":442,"stem":443,"children":444},"NSI — Terminale","\u002Fnsi-tale","2.nsi-tale\u002F0.index",[445,446,450,476,498,536,560],{"title":441,"path":442,"stem":443},{"title":447,"path":448,"stem":449},"Review pédagogique — chapitres NSI Terminale (TA, TB, TC, TD, TE)","\u002Fnsi-tale\u002Freview","2.nsi-tale\u002FREVIEW",{"title":451,"path":452,"stem":453,"children":454},"Structures de données","\u002Fnsi-tale\u002Fta-structures-donnees","2.nsi-tale\u002Fta-structures-donnees\u002F0.index",[455,456,460,464,468,472],{"title":451,"path":452,"stem":453},{"title":457,"path":458,"stem":459},"Objet, classe, interface","\u002Fnsi-tale\u002Fta-structures-donnees\u002Finterface-implementation","2.nsi-tale\u002Fta-structures-donnees\u002F1.interface-implementation",{"title":461,"path":462,"stem":463},"Implémenter une structure — l'exemple de la file FIFO","\u002Fnsi-tale\u002Fta-structures-donnees\u002Fimplementer-une-structure","2.nsi-tale\u002Fta-structures-donnees\u002F2.implementer-une-structure",{"title":465,"path":466,"stem":467},"Listes, piles, files, dictionnaires","\u002Fnsi-tale\u002Fta-structures-donnees\u002Flistes-piles-files-dict","2.nsi-tale\u002Fta-structures-donnees\u002F3.listes-piles-files-dict",{"title":469,"path":470,"stem":471},"Arbres binaires","\u002Fnsi-tale\u002Fta-structures-donnees\u002Farbres-binaires","2.nsi-tale\u002Fta-structures-donnees\u002F4.arbres-binaires",{"title":473,"path":474,"stem":475},"Graphes","\u002Fnsi-tale\u002Fta-structures-donnees\u002Fgraphes","2.nsi-tale\u002Fta-structures-donnees\u002F5.graphes",{"title":477,"path":478,"stem":479,"children":480},"Bases de données","\u002Fnsi-tale\u002Ftb-bases-de-donnees","2.nsi-tale\u002Ftb-bases-de-donnees\u002F0.index",[481,482,486,490,494],{"title":477,"path":478,"stem":479},{"title":483,"path":484,"stem":485},"Le modèle relationnel","\u002Fnsi-tale\u002Ftb-bases-de-donnees\u002Fmodele-relationnel","2.nsi-tale\u002Ftb-bases-de-donnees\u002F1.modele-relationnel",{"title":487,"path":488,"stem":489},"Bases de données relationnelles et anomalies de schéma","\u002Fnsi-tale\u002Ftb-bases-de-donnees\u002Fbase-relationnelle","2.nsi-tale\u002Ftb-bases-de-donnees\u002F2.base-relationnelle",{"title":491,"path":492,"stem":493},"Le langage SQL","\u002Fnsi-tale\u002Ftb-bases-de-donnees\u002Fsql","2.nsi-tale\u002Ftb-bases-de-donnees\u002F3.sql",{"title":495,"path":496,"stem":497},"Les systèmes de gestion de bases de données","\u002Fnsi-tale\u002Ftb-bases-de-donnees\u002Fsgbd","2.nsi-tale\u002Ftb-bases-de-donnees\u002F4.sgbd",{"title":499,"path":500,"stem":501,"children":502},"Architectures matérielles, systèmes d'exploitation et réseaux","\u002Fnsi-tale\u002Ftc-archi-os-reseaux","2.nsi-tale\u002Ftc-archi-os-reseaux\u002F0.index",[503,504,508,512,516,520,524,528,532],{"title":499,"path":500,"stem":501},{"title":505,"path":506,"stem":507},"Le système sur puce (SoC)","\u002Fnsi-tale\u002Ftc-archi-os-reseaux\u002Fsysteme-sur-puce","2.nsi-tale\u002Ftc-archi-os-reseaux\u002F1.systeme-sur-puce",{"title":509,"path":510,"stem":511},"Processus et ordonnancement par l'OS","\u002Fnsi-tale\u002Ftc-archi-os-reseaux\u002Fprocessus-os","2.nsi-tale\u002Ftc-archi-os-reseaux\u002F2.processus-os",{"title":513,"path":514,"stem":515},"L'interblocage (deadlock)","\u002Fnsi-tale\u002Ftc-archi-os-reseaux\u002Finterblocage","2.nsi-tale\u002Ftc-archi-os-reseaux\u002F3.interblocage",{"title":517,"path":518,"stem":519},"Principes du routage","\u002Fnsi-tale\u002Ftc-archi-os-reseaux\u002Froutage-principes","2.nsi-tale\u002Ftc-archi-os-reseaux\u002F4.routage-principes",{"title":521,"path":522,"stem":523},"Protocoles de routage RIP et OSPF","\u002Fnsi-tale\u002Ftc-archi-os-reseaux\u002Fprotocoles-rip-ospf","2.nsi-tale\u002Ftc-archi-os-reseaux\u002F5.protocoles-rip-ospf",{"title":525,"path":526,"stem":527},"Chiffrement symétrique","\u002Fnsi-tale\u002Ftc-archi-os-reseaux\u002Fchiffrement-symetrique","2.nsi-tale\u002Ftc-archi-os-reseaux\u002F6.chiffrement-symetrique",{"title":529,"path":530,"stem":531},"Chiffrement asymétrique","\u002Fnsi-tale\u002Ftc-archi-os-reseaux\u002Fchiffrement-asymetrique","2.nsi-tale\u002Ftc-archi-os-reseaux\u002F7.chiffrement-asymetrique",{"title":533,"path":534,"stem":535},"HTTPS — l'échange de clé symétrique","\u002Fnsi-tale\u002Ftc-archi-os-reseaux\u002Fhttps-tls","2.nsi-tale\u002Ftc-archi-os-reseaux\u002F8.https-tls",{"title":381,"path":537,"stem":538,"children":539},"\u002Fnsi-tale\u002Ftd-langages-prog","2.nsi-tale\u002Ftd-langages-prog\u002F0.index",[540,541,544,548,552,556],{"title":381,"path":537,"stem":538},{"title":403,"path":542,"stem":543},"\u002Fnsi-tale\u002Ftd-langages-prog\u002Fmise-au-point","2.nsi-tale\u002Ftd-langages-prog\u002F1.mise-au-point",{"title":545,"path":546,"stem":547},"Modularité","\u002Fnsi-tale\u002Ftd-langages-prog\u002Fmodularite","2.nsi-tale\u002Ftd-langages-prog\u002F2.modularite",{"title":549,"path":550,"stem":551},"Récursivité","\u002Fnsi-tale\u002Ftd-langages-prog\u002Frecursivite","2.nsi-tale\u002Ftd-langages-prog\u002F3.recursivite",{"title":553,"path":554,"stem":555},"Paradigmes de programmation","\u002Fnsi-tale\u002Ftd-langages-prog\u002Fparadigmes","2.nsi-tale\u002Ftd-langages-prog\u002F4.paradigmes",{"title":557,"path":558,"stem":559},"Programme comme donnée — calculabilité et indécidabilité","\u002Fnsi-tale\u002Ftd-langages-prog\u002Fprogramme-comme-donnee","2.nsi-tale\u002Ftd-langages-prog\u002F5.programme-comme-donnee",{"title":411,"path":561,"stem":562,"children":563},"\u002Fnsi-tale\u002Fte-algorithmique","2.nsi-tale\u002Fte-algorithmique\u002F0.index",[564,565,569,573,577,581],{"title":411,"path":561,"stem":562},{"title":566,"path":567,"stem":568},"Algorithmes sur les arbres binaires","\u002Fnsi-tale\u002Fte-algorithmique\u002Farbres-binaires-algos","2.nsi-tale\u002Fte-algorithmique\u002F1.arbres-binaires-algos",{"title":570,"path":571,"stem":572},"Parcours de graphes — DFS, BFS, cycles, chemins","\u002Fnsi-tale\u002Fte-algorithmique\u002Fgraphes-parcours","2.nsi-tale\u002Fte-algorithmique\u002F2.graphes-parcours",{"title":574,"path":575,"stem":576},"Diviser pour régner","\u002Fnsi-tale\u002Fte-algorithmique\u002Fdiviser-pour-regner","2.nsi-tale\u002Fte-algorithmique\u002F3.diviser-pour-regner",{"title":578,"path":579,"stem":580},"Programmation dynamique","\u002Fnsi-tale\u002Fte-algorithmique\u002Fprogrammation-dynamique","2.nsi-tale\u002Fte-algorithmique\u002F4.programmation-dynamique",{"title":582,"path":583,"stem":584},"Recherche textuelle — l'algorithme de Boyer-Moore","\u002Fnsi-tale\u002Fte-algorithmique\u002Frecherche-textuelle","2.nsi-tale\u002Fte-algorithmique\u002F5.recherche-textuelle",{"id":586,"title":111,"bo":587,"body":589,"description":1969,"eval":1970,"extension":1971,"labo":1970,"meta":1972,"navigation":1067,"path":112,"quizzes":1973,"readingTime":860,"seo":1989,"stem":113,"tp":1970,"__hash__":1990},"cours\u002F0.snt-2nde\u002Fsd-donnees-structurees\u002F4.traitement-tables.md",[588],"SD05",{"type":590,"value":591,"toc":1954},"minimark",[592,597,617,628,631,635,697,708,712,732,787,793,821,825,834,841,848,894,923,932,935,987,990,1019,1023,1030,1104,1123,1141,1147,1154,1260,1263,1291,1306,1333,1337,1346,1490,1493,1516,1529,1556,1560,1567,1676,1690,1711,1715,1721,1729,1732,1740,1755,1768,1772,1872,1876,1910,1935,1939,1950],[593,594,596],"h2",{"id":595},"introduction","Introduction",[598,599,600,601,605,606,609,610,609,613,616],"p",{},"Une table de données n'a d'intérêt que si l'on sait ",[602,603,604],"strong",{},"en extraire"," une\ninformation utile. Vous voulez la moyenne des notes ? La liste des élèves\nabsents en avril ? Les communes de plus de 10 000 habitants ? Tout cela\nrevient à effectuer trois opérations élémentaires sur la table : la\n",[602,607,608],{},"recherche",", le ",[602,611,612],{},"filtre",[602,614,615],{},"tri",".",[598,618,619,620,623,624,627],{},"Le bon réflexe est de commencer ",[602,621,622],{},"au tableur"," — Calc, Excel, Google Sheets.\nTout ce qu'on demande tient dans deux ou trois clics. Ce n'est qu'ensuite,\nquand on veut ",[602,625,626],{},"automatiser"," ou aller plus loin, qu'on regarde du côté de\nPython. Vous ferez les deux dans ce cours.",[629,630],"bo-ref",{"code":588},[593,632,634],{"id":633},"trois-opérations-élémentaires","Trois opérations élémentaires",[636,637,638,654],"table",{},[639,640,641],"thead",{},[642,643,644,648,651],"tr",{},[645,646,647],"th",{},"Opération",[645,649,650],{},"Question type",[645,652,653],{},"Résultat",[655,656,657,671,684],"tbody",{},[642,658,659,665,668],{},[660,661,662],"td",{},[602,663,664],{},"Recherche",[660,666,667],{},"« La ligne de Lila Martin existe-t-elle ? »",[660,669,670],{},"Une ligne (ou rien).",[642,672,673,678,681],{},[660,674,675],{},[602,676,677],{},"Filtre",[660,679,680],{},"« Quels élèves ont plus de 15 ans ? »",[660,682,683],{},"Un sous-ensemble de lignes.",[642,685,686,691,694],{},[660,687,688],{},[602,689,690],{},"Tri",[660,692,693],{},"« Classer du plus jeune au plus vieux. »",[660,695,696],{},"Les mêmes lignes, dans un autre ordre.",[598,698,699,700,703,704,707],{},"À ces trois opérations s'ajoutent les ",[602,701,702],{},"calculs"," : la moyenne d'une colonne,\nle maximum, la somme. Et enfin, la ",[602,705,706],{},"fusion"," de deux tables — par exemple\nrelier la table des élèves à celle des notes. Vous l'aborderez plus en détail\nen NSI Première.",[593,709,711],{"id":710},"dabord-au-tableur","D'abord, au tableur",[598,713,714,715,718,719,722,723,726,727,731],{},"Un logiciel comme ",[602,716,717],{},"LibreOffice Calc",", ",[602,720,721],{},"Microsoft Excel"," ou ",[602,724,725],{},"Google\nSheets"," offre une interface visuelle pour traiter une table. Pour répondre à\nla question ",[728,729,730],"em",{},"« quels élèves ont une moyenne au-dessus de 14 ? »",", vous\nn'écrivez pas une ligne de code :",[733,734,735,745,762,771],"ul",{},[736,737,738,740,741,744],"li",{},[602,739,664],{}," : la fonction ",[728,742,743],{},"Rechercher"," (Ctrl+F) localise une valeur.",[736,746,747,749,750,753,754,757,758,761],{},[602,748,677],{}," : le menu ",[728,751,752],{},"Données → Filtre"," (ou ",[728,755,756],{},"Filtre standard",") affiche\nuniquement les lignes qui satisfont un critère (",[728,759,760],{},"« moyenne > 14 »",").",[736,763,764,766,767,770],{},[602,765,690],{}," : ",[728,768,769],{},"Données → Trier"," réordonne par une ou plusieurs colonnes.",[736,772,773,776,777,718,781,718,784,616],{},[602,774,775],{},"Calculs"," : formules comme ",[778,779,780],"code",{},"=MOYENNE(B2:B30)",[778,782,783],{},"=MAX(C:C)",[778,785,786],{},"=SOMME(D:D)",[788,789,790],"tip",{},[598,791,792],{},"Le tableur est l'outil parfait pour quelques dizaines à quelques milliers de\nlignes. C'est par là qu'il faut commencer dans la vraie vie : c'est plus\nrapide, et on voit tout de suite si la donnée a la bonne tête.",[794,795,799,806],"self-eval-qcm",{"correct":796,"explanation":797,"slug":798},"1","Le menu Données → Filtre (ou Filtre standard) permet d'imposer un critère sur une colonne et de masquer les lignes qui ne le respectent pas.","traitement-tables-c1",[800,801,803],"template",{"v-slot:question":802},"",[598,804,805],{},"Pour ne garder que les lignes où la colonne « age » vaut plus de 15, quel menu du tableur cherche-t-on ?",[800,807,808],{"v-slot:choices":802},[733,809,810,813,815,818],{},[736,811,812],{},"Insertion → Image",[736,814,752],{},[736,816,817],{},"Format → Cellule",[736,819,820],{},"Affichage → Mise en page",[593,822,824],{"id":823},"et-en-python","Et en Python ?",[598,826,827,828,830,831,616],{},"Quand on veut ",[602,829,626],{}," un traitement (refaire la même chose chaque\nmois, traiter cent fichiers d'un coup, croiser deux tables), on bascule sur un\nlangage de programmation. En seconde, on découvre ",[602,832,833],{},"Python",[598,835,836,837,840],{},"L'idée est exactement la même qu'au tableur — on filtre, on trie, on calcule —\nmais cette fois on ",[602,838,839],{},"écrit la recette"," au lieu de cliquer dans un menu.",[598,842,843,844,847],{},"Considérez le fichier ",[778,845,846],{},"eleves.csv"," suivant :",[849,850,854],"pre",{"className":851,"code":852,"language":853,"meta":802,"style":802},"language-csv shiki shiki-themes github-light github-light github-dark","nom,prenom,age,moyenne\nMartin,Lila,15,14.5\nBouzid,Idris,16,12.8\nPetit,Jade,15,17.2\nDupuis,Maxime,17,9.4\nNguyen,Tien,16,15.7\n","csv",[778,855,856,864,870,876,882,888],{"__ignoreMap":802},[857,858,861],"span",{"class":859,"line":860},"line",1,[857,862,863],{},"nom,prenom,age,moyenne\n",[857,865,867],{"class":859,"line":866},2,[857,868,869],{},"Martin,Lila,15,14.5\n",[857,871,873],{"class":859,"line":872},3,[857,874,875],{},"Bouzid,Idris,16,12.8\n",[857,877,879],{"class":859,"line":878},4,[857,880,881],{},"Petit,Jade,15,17.2\n",[857,883,885],{"class":859,"line":884},5,[857,886,887],{},"Dupuis,Maxime,17,9.4\n",[857,889,891],{"class":859,"line":890},6,[857,892,893],{},"Nguyen,Tien,16,15.7\n",[598,895,896,897,900,901,904,905,908,909,912,913,916,917,908,919,922],{},"Pour traiter cette table en Python, on imagine qu'on dispose d'",[602,898,899],{},"outils\nprêts à l'emploi"," : des fonctions qui savent ouvrir le fichier, donner une\ncolonne, parcourir les lignes. Dans la suite du cours, on les écrira en\n",[602,902,903],{},"pseudo-code"," : des noms parlants comme ",[778,906,907],{},"charger_table(\"eleves.csv\")"," ou\n",[778,910,911],{},"obtenir_colonne(table, \"moyenne\")",". Ces fonctions n'existent pas\ndirectement en Python — elles représentent ",[602,914,915],{},"ce qu'une bibliothèque pourrait\noffrir",". En Python réel, on utiliserait une bibliothèque comme ",[778,918,853],{},[778,920,921],{},"pandas"," — vu en NSI Première.",[924,925,926],"note",{},[598,927,928,931],{},[602,929,930],{},"Pseudo-code"," : un mélange de Python et de bon sens. Le code n'est pas\nexécutable tel quel, mais il décrit fidèlement la logique du programme.\nC'est l'outil idéal pour réfléchir avant d'écrire les détails techniques.",[598,933,934],{},"Voici à quoi ressemble notre boîte à outils imaginaire :",[636,936,937,947],{},[639,938,939],{},[642,940,941,944],{},[645,942,943],{},"Fonction imaginaire",[645,945,946],{},"Ce qu'elle rend",[655,948,949,958,968,978],{},[642,950,951,955],{},[660,952,953],{},[778,954,907],{},[660,956,957],{},"une table : la suite des lignes du fichier",[642,959,960,965],{},[660,961,962],{},[778,963,964],{},"nombre_lignes(table)",[660,966,967],{},"combien de lignes contient la table (sans l'en-tête)",[642,969,970,975],{},[660,971,972],{},[778,973,974],{},"valeur(ligne, \"nom\")",[660,976,977],{},"la valeur stockée dans la colonne « nom » d'une ligne",[642,979,980,984],{},[660,981,982],{},[778,983,911],{},[660,985,986],{},"toutes les valeurs d'une colonne, sous forme de liste",[598,988,989],{},"Avec ces quatre fonctions, on peut décrire à peu près toutes les opérations\nde ce cours.",[794,991,994,1003],{"correct":796,"explanation":992,"slug":993},"`obtenir_colonne` rassemble toutes les valeurs d'une même colonne dans une liste — ici les âges 15, 16, 15, 17, 16.","traitement-tables-c2",[800,995,996],{"v-slot:question":802},[598,997,998,999,1002],{},"Que rend la fonction imaginaire ",[778,1000,1001],{},"obtenir_colonne(table, \\\"age\\\")"," appliquée à notre table d'élèves ?",[800,1004,1005],{"v-slot:choices":802},[733,1006,1007,1010,1013,1016],{},[736,1008,1009],{},"Un nombre unique",[736,1011,1012],{},"La liste des âges, ligne par ligne",[736,1014,1015],{},"La ligne complète de Lila Martin",[736,1017,1018],{},"Le nom de la colonne",[593,1020,1022],{"id":1021},"parcourir-la-table","Parcourir la table",[598,1024,1025,1026,1029],{},"L'opération la plus simple : ",[602,1027,1028],{},"parcourir"," la table ligne par ligne, comme on\ndescendrait la feuille du tableur. En pseudo-code Python :",[849,1031,1035],{"className":1032,"code":1033,"language":1034,"meta":802,"style":802},"language-python shiki shiki-themes github-light github-light github-dark","# Pseudo-code : charger_table et valeur sont imaginaires.\ntable = charger_table(\"eleves.csv\")\n\nfor ligne in table:\n    print(valeur(ligne, \"prenom\"), valeur(ligne, \"nom\"))\n","python",[778,1036,1037,1043,1063,1069,1083],{"__ignoreMap":802},[857,1038,1039],{"class":859,"line":860},[857,1040,1042],{"class":1041},"sCsY4","# Pseudo-code : charger_table et valeur sont imaginaires.\n",[857,1044,1045,1049,1053,1056,1060],{"class":859,"line":866},[857,1046,1048],{"class":1047},"sxrX7","table ",[857,1050,1052],{"class":1051},"s8jYJ","=",[857,1054,1055],{"class":1047}," charger_table(",[857,1057,1059],{"class":1058},"sIIMD","\"eleves.csv\"",[857,1061,1062],{"class":1047},")\n",[857,1064,1065],{"class":859,"line":872},[857,1066,1068],{"emptyLinePlaceholder":1067},true,"\n",[857,1070,1071,1074,1077,1080],{"class":859,"line":878},[857,1072,1073],{"class":1051},"for",[857,1075,1076],{"class":1047}," ligne ",[857,1078,1079],{"class":1051},"in",[857,1081,1082],{"class":1047}," table:\n",[857,1084,1085,1089,1092,1095,1098,1101],{"class":859,"line":884},[857,1086,1088],{"class":1087},"sBjJW","    print",[857,1090,1091],{"class":1047},"(valeur(ligne, ",[857,1093,1094],{"class":1058},"\"prenom\"",[857,1096,1097],{"class":1047},"), valeur(ligne, ",[857,1099,1100],{"class":1058},"\"nom\"",[857,1102,1103],{"class":1047},"))\n",[598,1105,1106,1107,1114,1115,1118,1119,1122],{},"Lecture : ",[728,1108,1109,1110,1113],{},"« pour chaque ",[778,1111,1112],{},"ligne"," de la table, afficher son prénom puis son\nnom »",". C'est exactement la même structure que ",[778,1116,1117],{},"for n in notes:"," du chapitre\nSH : on parcourt ",[602,1120,1121],{},"chaque élément"," d'une suite, l'un après l'autre.",[1124,1125,1126],"warning",{},[598,1127,1128,1129,1132,1133,1136,1137,1140],{},"Les fonctions ",[778,1130,1131],{},"charger_table(...)"," et ",[778,1134,1135],{},"valeur(...)"," n'existent pas en\nPython tel quel. Ce sont des ",[602,1138,1139],{},"noms imaginés"," pour décrire la logique sans\nse perdre dans la syntaxe d'une vraie bibliothèque. En NSI Première, vous\nverrez les outils réels — la pensée, elle, restera identique.",[593,1142,1144,1145],{"id":1143},"filtrer-avec-une-boucle-for","Filtrer avec une boucle ",[778,1146,1073],{},[598,1148,1149,1150,1153],{},"Filtrer, c'est ",[602,1151,1152],{},"garder seulement les lignes"," qui répondent à un critère. La\nrecette en pseudo-code Python ressemble à ceci :",[849,1155,1157],{"className":1032,"code":1156,"language":1034,"meta":802,"style":802},"# Pseudo-code : on veut compter les élèves admis (moyenne >= 14).\ntable = charger_table(\"eleves.csv\")\n\nnombre_admis = 0\nfor ligne in table:\n    if valeur(ligne, \"moyenne\") >= 14:\n        nombre_admis = nombre_admis + 1\n\nprint(\"Nombre d'admis :\", nombre_admis)\n",[778,1158,1159,1164,1176,1180,1190,1200,1223,1240,1245],{"__ignoreMap":802},[857,1160,1161],{"class":859,"line":860},[857,1162,1163],{"class":1041},"# Pseudo-code : on veut compter les élèves admis (moyenne >= 14).\n",[857,1165,1166,1168,1170,1172,1174],{"class":859,"line":866},[857,1167,1048],{"class":1047},[857,1169,1052],{"class":1051},[857,1171,1055],{"class":1047},[857,1173,1059],{"class":1058},[857,1175,1062],{"class":1047},[857,1177,1178],{"class":859,"line":872},[857,1179,1068],{"emptyLinePlaceholder":1067},[857,1181,1182,1185,1187],{"class":859,"line":878},[857,1183,1184],{"class":1047},"nombre_admis ",[857,1186,1052],{"class":1051},[857,1188,1189],{"class":1087}," 0\n",[857,1191,1192,1194,1196,1198],{"class":859,"line":884},[857,1193,1073],{"class":1051},[857,1195,1076],{"class":1047},[857,1197,1079],{"class":1051},[857,1199,1082],{"class":1047},[857,1201,1202,1205,1208,1211,1214,1217,1220],{"class":859,"line":890},[857,1203,1204],{"class":1051},"    if",[857,1206,1207],{"class":1047}," valeur(ligne, ",[857,1209,1210],{"class":1058},"\"moyenne\"",[857,1212,1213],{"class":1047},") ",[857,1215,1216],{"class":1051},">=",[857,1218,1219],{"class":1087}," 14",[857,1221,1222],{"class":1047},":\n",[857,1224,1226,1229,1231,1234,1237],{"class":859,"line":1225},7,[857,1227,1228],{"class":1047},"        nombre_admis ",[857,1230,1052],{"class":1051},[857,1232,1233],{"class":1047}," nombre_admis ",[857,1235,1236],{"class":1051},"+",[857,1238,1239],{"class":1087}," 1\n",[857,1241,1243],{"class":859,"line":1242},8,[857,1244,1068],{"emptyLinePlaceholder":1067},[857,1246,1248,1251,1254,1257],{"class":859,"line":1247},9,[857,1249,1250],{"class":1087},"print",[857,1252,1253],{"class":1047},"(",[857,1255,1256],{"class":1058},"\"Nombre d'admis :\"",[857,1258,1259],{"class":1047},", nombre_admis)\n",[598,1261,1262],{},"Lecture :",[733,1264,1265,1272,1278,1288],{},[736,1266,1267,1268,1271],{},"on prépare un compteur ",[778,1269,1270],{},"nombre_admis"," à zéro ;",[736,1273,1274,1275,1277],{},"on parcourt chaque ligne avec une boucle ",[778,1276,1073],{}," ;",[736,1279,1280,1281,1284,1285,1277],{},"pour chaque ligne, on ",[602,1282,1283],{},"teste"," le critère avec un ",[778,1286,1287],{},"if",[736,1289,1290],{},"si le test réussit, on augmente le compteur de 1.",[788,1292,1293],{},[598,1294,1295,1296,1298,1299,1301,1302,1305],{},"La structure « compteur à zéro + boucle ",[778,1297,1073],{}," + ",[778,1300,1287],{}," qui incrémente » est\nl'un des patrons les plus utiles du programme. Vous le réutiliserez à chaque\nfois que vous voudrez ",[602,1303,1304],{},"compter combien d'éléments"," d'une suite vérifient\nun critère.",[794,1307,1311,1319],{"correct":1308,"explanation":1309,"slug":1310},"2","Trois moyennes sont ≥ 14 : 14.5 (Lila), 17.2 (Jade) et 15.7 (Tien).","traitement-tables-c3",[800,1312,1313],{"v-slot:question":802},[598,1314,1315,1316,1318],{},"Sur notre table de 5 élèves, combien vaut ",[778,1317,1270],{}," à la fin (moyennes : 14.5, 12.8, 17.2, 9.4, 15.7) ?",[800,1320,1321],{"v-slot:choices":802},[733,1322,1323,1325,1327,1330],{},[736,1324,796],{},[736,1326,1308],{},[736,1328,1329],{},"3",[736,1331,1332],{},"5",[593,1334,1336],{"id":1335},"calculer-une-moyenne-un-vrai-code-exécutable","Calculer une moyenne — un vrai code exécutable",[598,1338,1339,1340,1343,1344,616],{},"Pour calculer la moyenne d'une colonne, on n'a plus besoin du pseudo-code :\nune ",[602,1341,1342],{},"liste Python simple"," suffit. C'est exactement ce que vous avez vu en\nSH4 avec la boucle ",[778,1345,1117],{},[1347,1348,1349],"python-snippet",{},[849,1350,1352],{"className":1032,"code":1351,"language":1034,"meta":802,"style":802},"moyennes = [14.5, 12.8, 17.2, 9.4, 15.7]\n\n# On accumule la somme dans une variable \"total\".\ntotal = 0\nfor m in moyennes:\n    total = total + m\n\n# La moyenne de classe = somme \u002F nombre d'élèves.\nmoyenne_classe = total \u002F 5\n\nprint(\"Total :\", total)\nprint(\"Moyenne de classe :\", moyenne_classe)\n",[778,1353,1354,1390,1394,1399,1408,1420,1435,1439,1444,1459,1464,1477],{"__ignoreMap":802},[857,1355,1356,1359,1361,1364,1367,1369,1372,1374,1377,1379,1382,1384,1387],{"class":859,"line":860},[857,1357,1358],{"class":1047},"moyennes ",[857,1360,1052],{"class":1051},[857,1362,1363],{"class":1047}," [",[857,1365,1366],{"class":1087},"14.5",[857,1368,718],{"class":1047},[857,1370,1371],{"class":1087},"12.8",[857,1373,718],{"class":1047},[857,1375,1376],{"class":1087},"17.2",[857,1378,718],{"class":1047},[857,1380,1381],{"class":1087},"9.4",[857,1383,718],{"class":1047},[857,1385,1386],{"class":1087},"15.7",[857,1388,1389],{"class":1047},"]\n",[857,1391,1392],{"class":859,"line":866},[857,1393,1068],{"emptyLinePlaceholder":1067},[857,1395,1396],{"class":859,"line":872},[857,1397,1398],{"class":1041},"# On accumule la somme dans une variable \"total\".\n",[857,1400,1401,1404,1406],{"class":859,"line":878},[857,1402,1403],{"class":1047},"total ",[857,1405,1052],{"class":1051},[857,1407,1189],{"class":1087},[857,1409,1410,1412,1415,1417],{"class":859,"line":884},[857,1411,1073],{"class":1051},[857,1413,1414],{"class":1047}," m ",[857,1416,1079],{"class":1051},[857,1418,1419],{"class":1047}," moyennes:\n",[857,1421,1422,1425,1427,1430,1432],{"class":859,"line":890},[857,1423,1424],{"class":1047},"    total ",[857,1426,1052],{"class":1051},[857,1428,1429],{"class":1047}," total ",[857,1431,1236],{"class":1051},[857,1433,1434],{"class":1047}," m\n",[857,1436,1437],{"class":859,"line":1225},[857,1438,1068],{"emptyLinePlaceholder":1067},[857,1440,1441],{"class":859,"line":1242},[857,1442,1443],{"class":1041},"# La moyenne de classe = somme \u002F nombre d'élèves.\n",[857,1445,1446,1449,1451,1453,1456],{"class":859,"line":1247},[857,1447,1448],{"class":1047},"moyenne_classe ",[857,1450,1052],{"class":1051},[857,1452,1429],{"class":1047},[857,1454,1455],{"class":1051},"\u002F",[857,1457,1458],{"class":1087}," 5\n",[857,1460,1462],{"class":859,"line":1461},10,[857,1463,1068],{"emptyLinePlaceholder":1067},[857,1465,1467,1469,1471,1474],{"class":859,"line":1466},11,[857,1468,1250],{"class":1087},[857,1470,1253],{"class":1047},[857,1472,1473],{"class":1058},"\"Total :\"",[857,1475,1476],{"class":1047},", total)\n",[857,1478,1480,1482,1484,1487],{"class":859,"line":1479},12,[857,1481,1250],{"class":1087},[857,1483,1253],{"class":1047},[857,1485,1486],{"class":1058},"\"Moyenne de classe :\"",[857,1488,1489],{"class":1047},", moyenne_classe)\n",[598,1491,1492],{},"Trois ingrédients suffisent :",[733,1494,1495,1502,1510],{},[736,1496,1497,1498,1501],{},"une variable ",[778,1499,1500],{},"total"," qui démarre à zéro ;",[736,1503,1504,1505,1507,1508,1277],{},"une boucle ",[778,1506,1073],{}," qui ajoute chaque valeur à ",[778,1509,1500],{},[736,1511,1512,1513,1515],{},"une division par le nombre de valeurs (",[778,1514,1332],{}," ici, le nombre d'élèves).",[788,1517,1518],{},[598,1519,1520,1521,1524,1525,1528],{},"Au tableur, la même chose s'écrit ",[778,1522,1523],{},"=MOYENNE(D2:D6)",". Une seule cellule, le\nrésultat apparaît immédiatement. C'est typiquement le cas où le tableur est\nplus court que le code — Python prend le dessus quand il y a ",[602,1526,1527],{},"plus"," que ça\nà faire (filtrer, croiser, automatiser…).",[794,1530,1533,1541],{"correct":1308,"explanation":1531,"slug":1532},"14.5 + 12.8 + 17.2 + 9.4 + 15.7 = 69.6. La moyenne est donc 69.6 \u002F 5 = 13.92.","traitement-tables-c4",[800,1534,1535],{"v-slot:question":802},[598,1536,1537,1538,1540],{},"Sans exécuter le programme, à quoi vaut ",[778,1539,1500],{}," après la boucle ?",[800,1542,1543],{"v-slot:choices":802},[733,1544,1545,1547,1550,1553],{},[736,1546,1332],{},[736,1548,1549],{},"59.6",[736,1551,1552],{},"69.6",[736,1554,1555],{},"0",[593,1557,1559],{"id":1558},"trouver-le-maximum-dune-colonne","Trouver le maximum d'une colonne",[598,1561,1562,1563,1566],{},"Même approche pour trouver la ",[602,1564,1565],{},"meilleure"," moyenne : on parcourt la liste en\ngardant en mémoire la plus grande valeur rencontrée jusqu'ici.",[1347,1568,1569],{},[849,1570,1572],{"className":1032,"code":1571,"language":1034,"meta":802,"style":802},"moyennes = [14.5, 12.8, 17.2, 9.4, 15.7]\n\n# On suppose au départ que la première valeur est le maximum.\nmaximum = moyennes[0]\n\nfor m in moyennes:\n    if m > maximum:\n        maximum = m\n\nprint(\"Meilleure moyenne :\", maximum)\n",[778,1573,1574,1602,1606,1611,1625,1629,1639,1651,1660,1664],{"__ignoreMap":802},[857,1575,1576,1578,1580,1582,1584,1586,1588,1590,1592,1594,1596,1598,1600],{"class":859,"line":860},[857,1577,1358],{"class":1047},[857,1579,1052],{"class":1051},[857,1581,1363],{"class":1047},[857,1583,1366],{"class":1087},[857,1585,718],{"class":1047},[857,1587,1371],{"class":1087},[857,1589,718],{"class":1047},[857,1591,1376],{"class":1087},[857,1593,718],{"class":1047},[857,1595,1381],{"class":1087},[857,1597,718],{"class":1047},[857,1599,1386],{"class":1087},[857,1601,1389],{"class":1047},[857,1603,1604],{"class":859,"line":866},[857,1605,1068],{"emptyLinePlaceholder":1067},[857,1607,1608],{"class":859,"line":872},[857,1609,1610],{"class":1041},"# On suppose au départ que la première valeur est le maximum.\n",[857,1612,1613,1616,1618,1621,1623],{"class":859,"line":878},[857,1614,1615],{"class":1047},"maximum ",[857,1617,1052],{"class":1051},[857,1619,1620],{"class":1047}," moyennes[",[857,1622,1555],{"class":1087},[857,1624,1389],{"class":1047},[857,1626,1627],{"class":859,"line":884},[857,1628,1068],{"emptyLinePlaceholder":1067},[857,1630,1631,1633,1635,1637],{"class":859,"line":890},[857,1632,1073],{"class":1051},[857,1634,1414],{"class":1047},[857,1636,1079],{"class":1051},[857,1638,1419],{"class":1047},[857,1640,1641,1643,1645,1648],{"class":859,"line":1225},[857,1642,1204],{"class":1051},[857,1644,1414],{"class":1047},[857,1646,1647],{"class":1051},">",[857,1649,1650],{"class":1047}," maximum:\n",[857,1652,1653,1656,1658],{"class":859,"line":1242},[857,1654,1655],{"class":1047},"        maximum ",[857,1657,1052],{"class":1051},[857,1659,1434],{"class":1047},[857,1661,1662],{"class":859,"line":1247},[857,1663,1068],{"emptyLinePlaceholder":1067},[857,1665,1666,1668,1670,1673],{"class":859,"line":1461},[857,1667,1250],{"class":1087},[857,1669,1253],{"class":1047},[857,1671,1672],{"class":1058},"\"Meilleure moyenne :\"",[857,1674,1675],{"class":1047},", maximum)\n",[598,1677,1678,1679,1682,1683,1686,1687,1689],{},"À chaque tour de boucle, on compare la valeur courante ",[778,1680,1681],{},"m"," au champion\nprovisoire ",[778,1684,1685],{},"maximum",". Si ",[778,1688,1681],{}," est plus grande, elle prend la place.",[924,1691,1692],{},[598,1693,1694,1697,1698,1701,1702,1704,1705,1708,1709,616],{},[778,1695,1696],{},"moyennes[0]"," désigne la ",[602,1699,1700],{},"première valeur"," de la liste — ici ",[778,1703,1366],{},". Les\nlistes Python sont numérotées à partir de zéro, exactement comme ",[778,1706,1707],{},"range(n)","\nqui commence à ",[778,1710,1555],{},[593,1712,1714],{"id":1713},"trier-se-laisser-aider","Trier : se laisser aider",[598,1716,1717,1718,1720],{},"Trier une liste « à la main » avec un ",[778,1719,1073],{}," est possible mais long. Python\nsait le faire pour vous, et un tableur encore plus vite. Pour notre table, il\nsuffit de demander :",[1722,1723,1724],"blockquote",{},[598,1725,1726],{},[728,1727,1728],{},"« Trie les élèves par âge croissant. »",[598,1730,1731],{},"Le résultat affiché sera dans l'ordre voulu :",[849,1733,1738],{"className":1734,"code":1736,"language":1737,"meta":802},[1735],"language-text","Martin Lila 15 ans\nPetit Jade 15 ans\nBouzid Idris 16 ans\nNguyen Tien 16 ans\nDupuis Maxime 17 ans\n","text",[778,1739,1736],{"__ignoreMap":802},[598,1741,1742,1743,1746,1747,1750,1751,1754],{},"Ce qui compte ici, c'est de comprendre ",[602,1744,1745],{},"ce que fait"," le tri : il\n",[602,1748,1749],{},"réorganise"," les mêmes lignes selon un descripteur. Le mécanisme exact\n(comment Python s'y prend en interne, comment on lui dit ",[728,1752,1753],{},"« trie selon\nl'âge »",") est un peu technique pour cette année — vous le verrez en NSI\nPremière.",[788,1756,1757],{},[598,1758,1759,1760,1763,1764,1767],{},"Au tableur, c'est immédiat : ",[728,1761,1762],{},"Données → Trier → Colonne « age » → Croissant",".\nEn Python, vous écrirez plus tard une instruction du style ",[778,1765,1766],{},"trier(table, \"age\")","\nqui rendra exactement le même résultat.",[593,1769,1771],{"id":1770},"récapitulatif-des-opérations","Récapitulatif des opérations",[636,1773,1774,1786],{},[639,1775,1776],{},[642,1777,1778,1780,1783],{},[645,1779,647],{},[645,1781,1782],{},"Au tableur",[645,1784,1785],{},"En Python (idée)",[655,1787,1788,1803,1821,1834,1857],{},[642,1789,1790,1795,1798],{},[660,1791,1792],{},[602,1793,1794],{},"Parcours",[660,1796,1797],{},"dérouler la feuille",[660,1799,1800],{},[778,1801,1802],{},"for ligne in table:",[642,1804,1805,1809,1814],{},[660,1806,1807],{},[602,1808,677],{},[660,1810,1811,1812],{},"menu ",[728,1813,752],{},[660,1815,1816,1298,1818,1820],{},[778,1817,1073],{},[778,1819,1287],{}," + compteur ou nouvelle liste",[642,1822,1823,1827,1831],{},[660,1824,1825],{},[602,1826,690],{},[660,1828,1811,1829],{},[728,1830,769],{},[660,1832,1833],{},"demander à Python (mécanisme vu en NSI 1ère)",[642,1835,1836,1841,1852],{},[660,1837,1838],{},[602,1839,1840],{},"Calcul (moyenne, max, somme)",[660,1842,1843,718,1846,718,1849],{},[778,1844,1845],{},"=MOYENNE(...)",[778,1847,1848],{},"=MAX(...)",[778,1850,1851],{},"=SOMME(...)",[660,1853,1854,1855],{},"accumuler dans une variable avec ",[778,1856,1073],{},[642,1858,1859,1864,1869],{},[660,1860,1861],{},[602,1862,1863],{},"Charger un CSV",[660,1865,1866],{},[728,1867,1868],{},"Fichier → Ouvrir",[660,1870,1871],{},"bibliothèque dédiée (vue en NSI 1ère)",[593,1873,1875],{"id":1874},"pièges-courants","Pièges courants",[1124,1877,1878],{},[733,1879,1880,1894,1904],{},[736,1881,1882,1885,1886,718,1888,718,1890,1893],{},[602,1883,1884],{},"Le pseudo-code n'est pas exécutable",". Les fonctions\n",[778,1887,1131],{},[778,1889,1135],{},[778,1891,1892],{},"obtenir_colonne(...)"," n'existent\npas en Python tel quel — elles représentent ce qu'une bibliothèque\nfournit. En NSI Première, vous remplacerez ces noms par les outils réels.",[736,1895,1896,1899,1900,1903],{},[602,1897,1898],{},"Type des données"," : une moyenne lue dans un fichier brut est parfois\ndu ",[602,1901,1902],{},"texte",". La comparer à un nombre demande une étape de conversion.\nCette étape sera vue plus tard ; pour l'instant, on travaille directement\navec des nombres dans nos listes Python.",[736,1905,1906,1909],{},[602,1907,1908],{},"Cellules vides"," : sur un vrai jeu de données, une ligne peut manquer\nune valeur. Le programme doit alors la sauter ou la signaler — sinon,\nune division ou une comparaison plante.",[794,1911,1914,1919],{"correct":796,"explanation":1912,"slug":1913},"Le pseudo-code permet de raisonner sur la logique du traitement sans introduire d'outils Python avancés. Ces outils (bibliothèque `csv`, dictionnaires) seront introduits en NSI Première.","traitement-tables-c5",[800,1915,1916],{"v-slot:question":802},[598,1917,1918],{},"Pourquoi écrit-on ici du « pseudo-code » au lieu du vrai Python pour ouvrir un fichier CSV ?",[800,1920,1921],{"v-slot:choices":802},[733,1922,1923,1926,1929,1932],{},[736,1924,1925],{},"Parce que le vrai Python est interdit en SNT",[736,1927,1928],{},"Parce que les outils nécessaires (bibliothèques, dictionnaires) seront vus en NSI Première",[736,1930,1931],{},"Parce que les fichiers CSV sont obsolètes",[736,1933,1934],{},"Parce que Python ne sait pas lire les fichiers",[593,1936,1938],{"id":1937},"pour-aller-plus-loin","Pour aller plus loin",[598,1940,1941,1942,1945,1946,1949],{},"Quand les tables grossissent ou que les croisements deviennent complexes, on\nbascule sur des ",[602,1943,1944],{},"bases de données"," interrogées en ",[602,1947,1948],{},"SQL",". Vous découvrirez\nces outils en NSI Première et Terminale. Le principe reste exactement le\nmême : recherche, filtre, tri, fusion — sur des données structurées.",[1951,1952,1953],"style",{},"html .light .shiki span {color: var(--shiki-light);background: var(--shiki-light-bg);font-style: var(--shiki-light-font-style);font-weight: var(--shiki-light-font-weight);text-decoration: var(--shiki-light-text-decoration);}html.light .shiki span {color: var(--shiki-light);background: var(--shiki-light-bg);font-style: var(--shiki-light-font-style);font-weight: var(--shiki-light-font-weight);text-decoration: var(--shiki-light-text-decoration);}html .default .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}html.dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}html pre.shiki code .sCsY4, html code.shiki .sCsY4{--shiki-light:#6A737D;--shiki-default:#6A737D;--shiki-dark:#6A737D}html pre.shiki code .sxrX7, html code.shiki .sxrX7{--shiki-light:#24292E;--shiki-default:#24292E;--shiki-dark:#E1E4E8}html pre.shiki code .s8jYJ, html code.shiki .s8jYJ{--shiki-light:#D73A49;--shiki-default:#D73A49;--shiki-dark:#F97583}html pre.shiki code .sIIMD, html code.shiki .sIIMD{--shiki-light:#032F62;--shiki-default:#032F62;--shiki-dark:#9ECBFF}html pre.shiki code .sBjJW, html code.shiki .sBjJW{--shiki-light:#005CC5;--shiki-default:#005CC5;--shiki-dark:#79B8FF}",{"title":802,"searchDepth":866,"depth":866,"links":1955},[1956,1957,1958,1959,1960,1961,1963,1964,1965,1966,1967,1968],{"id":595,"depth":866,"text":596},{"id":633,"depth":866,"text":634},{"id":710,"depth":866,"text":711},{"id":823,"depth":866,"text":824},{"id":1021,"depth":866,"text":1022},{"id":1143,"depth":866,"text":1962},"Filtrer avec une boucle for",{"id":1335,"depth":866,"text":1336},{"id":1558,"depth":866,"text":1559},{"id":1713,"depth":866,"text":1714},{"id":1770,"depth":866,"text":1771},{"id":1874,"depth":866,"text":1875},{"id":1937,"depth":866,"text":1938},"Une fois la table en place, comment la rechercher, la filtrer et la trier ? D'abord au tableur, puis avec quelques boucles Python très simples.",null,"md",{},[1974,1978,1981,1984,1987],{"slug":798,"kind":1975,"question":805,"choices":1976,"correct":796,"multi":1977,"explanation":797},"qcm",[812,752,817,820],false,{"slug":993,"kind":1975,"question":1979,"choices":1980,"correct":796,"multi":1977,"explanation":992},"Que rend la fonction imaginaire obtenir_colonne(table, \\\"age\\\") appliquée à notre table d'élèves ?",[1009,1012,1015,1018],{"slug":1310,"kind":1975,"question":1982,"choices":1983,"correct":1308,"multi":1977,"explanation":1309},"Sur notre table de 5 élèves, combien vaut nombre_admis à la fin (moyennes : 14.5, 12.8, 17.2, 9.4, 15.7) ?",[796,1308,1329,1332],{"slug":1532,"kind":1975,"question":1985,"choices":1986,"correct":1308,"multi":1977,"explanation":1531},"Sans exécuter le programme, à quoi vaut total après la boucle ?",[1332,1549,1552,1555],{"slug":1913,"kind":1975,"question":1918,"choices":1988,"correct":796,"multi":1977,"explanation":1912},[1925,1928,1931,1934],{"title":111,"description":1969},"mQIGCghReFttLNsIPEygof2fOwatwllrUf-T9mCbxkE",{"id":1992,"title":1993,"bo":1994,"body":1995,"description":2450,"eval":1970,"extension":1971,"labo":1970,"meta":2451,"navigation":1977,"path":2452,"quizzes":2453,"readingTime":860,"seo":2454,"stem":2455,"tp":1970,"__hash__":2456},"coursMemo\u002F0.snt-2nde\u002Fsd-donnees-structurees\u002F4.traitement-tables.memo.md","Traitement de tables — l'essentiel",[588],{"type":590,"value":1996,"toc":2442},[1997,2001,2026,2030,2087,2091,2101,2187,2196,2200,2207,2341,2343,2376,2380,2433,2439],[593,1998,2000],{"id":1999},"en-une-phrase","En une phrase",[598,2002,2003,2004,718,2007,718,2010,2013,2014,2017,2018,2020,2021,1298,2023,2025],{},"Traiter une table, c'est appliquer trois opérations élémentaires —\n",[602,2005,2006],{},"rechercher",[602,2008,2009],{},"filtrer",[602,2011,2012],{},"trier"," — d'abord au ",[602,2015,2016],{},"tableur"," quand on\npeut, ensuite en ",[602,2019,833],{}," (boucle ",[778,2022,1073],{},[778,2024,1287],{},") quand on veut automatiser.",[593,2027,2029],{"id":2028},"à-mémoriser","À mémoriser",[733,2031,2032,2037,2042,2047,2053,2075],{},[736,2033,2034,2036],{},[602,2035,664],{}," : retrouver une ligne précise.",[736,2038,2039,2041],{},[602,2040,677],{}," : conserver les lignes qui satisfont un critère.",[736,2043,2044,2046],{},[602,2045,690],{}," : réordonner les lignes selon un descripteur.",[736,2048,2049,2052],{},[602,2050,2051],{},"Calcul"," : moyenne, max, somme sur une colonne.",[736,2054,2055,2056,2058,2059,718,2061,2064,2065,718,2068,2071,2072,616],{},"Au ",[602,2057,2016],{}," : menus ",[728,2060,677],{},[728,2062,2063],{},"Trier",", fonctions ",[778,2066,2067],{},"MOYENNE",[778,2069,2070],{},"MAX",",\n",[778,2073,2074],{},"SOMME",[736,2076,2077,2078,2080,2081,2083,2084,2086],{},"En ",[602,2079,833],{}," : on parcourt la table avec une boucle ",[778,2082,1073],{},", on teste un\ncritère avec ",[778,2085,1287],{},", on accumule un résultat dans une variable. Les outils\npour ouvrir directement un fichier CSV sont vus en NSI Première.",[593,2088,2090],{"id":2089},"pseudo-code-parcourir-et-filtrer","Pseudo-code : parcourir et filtrer",[598,2092,2093,2094,718,2097,2100],{},"On imagine quelques fonctions parlantes — ",[778,2095,2096],{},"charger_table",[778,2098,2099],{},"valeur"," — qui\nn'existent pas vraiment en Python mais qui décrivent la logique :",[849,2102,2104],{"className":1032,"code":2103,"language":1034,"meta":802,"style":802},"# Pseudo-code : compter les élèves admis (moyenne >= 14).\ntable = charger_table(\"eleves.csv\")\n\nnombre_admis = 0\nfor ligne in table:\n    if valeur(ligne, \"moyenne\") >= 14:\n        nombre_admis = nombre_admis + 1\n\nprint(\"Nombre d'admis :\", nombre_admis)\n",[778,2105,2106,2111,2123,2127,2135,2145,2161,2173,2177],{"__ignoreMap":802},[857,2107,2108],{"class":859,"line":860},[857,2109,2110],{"class":1041},"# Pseudo-code : compter les élèves admis (moyenne >= 14).\n",[857,2112,2113,2115,2117,2119,2121],{"class":859,"line":866},[857,2114,1048],{"class":1047},[857,2116,1052],{"class":1051},[857,2118,1055],{"class":1047},[857,2120,1059],{"class":1058},[857,2122,1062],{"class":1047},[857,2124,2125],{"class":859,"line":872},[857,2126,1068],{"emptyLinePlaceholder":1067},[857,2128,2129,2131,2133],{"class":859,"line":878},[857,2130,1184],{"class":1047},[857,2132,1052],{"class":1051},[857,2134,1189],{"class":1087},[857,2136,2137,2139,2141,2143],{"class":859,"line":884},[857,2138,1073],{"class":1051},[857,2140,1076],{"class":1047},[857,2142,1079],{"class":1051},[857,2144,1082],{"class":1047},[857,2146,2147,2149,2151,2153,2155,2157,2159],{"class":859,"line":890},[857,2148,1204],{"class":1051},[857,2150,1207],{"class":1047},[857,2152,1210],{"class":1058},[857,2154,1213],{"class":1047},[857,2156,1216],{"class":1051},[857,2158,1219],{"class":1087},[857,2160,1222],{"class":1047},[857,2162,2163,2165,2167,2169,2171],{"class":859,"line":1225},[857,2164,1228],{"class":1047},[857,2166,1052],{"class":1051},[857,2168,1233],{"class":1047},[857,2170,1236],{"class":1051},[857,2172,1239],{"class":1087},[857,2174,2175],{"class":859,"line":1242},[857,2176,1068],{"emptyLinePlaceholder":1067},[857,2178,2179,2181,2183,2185],{"class":859,"line":1247},[857,2180,1250],{"class":1087},[857,2182,1253],{"class":1047},[857,2184,1256],{"class":1058},[857,2186,1259],{"class":1047},[598,2188,2189,2190,616],{},"Patron à retenir : ",[602,2191,2192,2193,2195],{},"compteur à zéro → boucle → ",[778,2194,1287],{}," → incrément",[593,2197,2199],{"id":2198},"vrai-python-calculs-sur-une-liste","Vrai Python : calculs sur une liste",[598,2201,2202,2203,2206],{},"Quand les valeurs sont déjà sous forme de ",[602,2204,2205],{},"liste Python",", le code est\nréellement exécutable :",[849,2208,2210],{"className":1032,"code":2209,"language":1034,"meta":802,"style":802},"moyennes = [14.5, 12.8, 17.2, 9.4, 15.7]\n\n# Somme et moyenne\ntotal = 0\nfor m in moyennes:\n    total = total + m\nmoyenne_classe = total \u002F 5\n\n# Maximum\nmaximum = moyennes[0]\nfor m in moyennes:\n    if m > maximum:\n        maximum = m\n",[778,2211,2212,2240,2244,2249,2257,2267,2279,2291,2295,2300,2312,2322,2332],{"__ignoreMap":802},[857,2213,2214,2216,2218,2220,2222,2224,2226,2228,2230,2232,2234,2236,2238],{"class":859,"line":860},[857,2215,1358],{"class":1047},[857,2217,1052],{"class":1051},[857,2219,1363],{"class":1047},[857,2221,1366],{"class":1087},[857,2223,718],{"class":1047},[857,2225,1371],{"class":1087},[857,2227,718],{"class":1047},[857,2229,1376],{"class":1087},[857,2231,718],{"class":1047},[857,2233,1381],{"class":1087},[857,2235,718],{"class":1047},[857,2237,1386],{"class":1087},[857,2239,1389],{"class":1047},[857,2241,2242],{"class":859,"line":866},[857,2243,1068],{"emptyLinePlaceholder":1067},[857,2245,2246],{"class":859,"line":872},[857,2247,2248],{"class":1041},"# Somme et moyenne\n",[857,2250,2251,2253,2255],{"class":859,"line":878},[857,2252,1403],{"class":1047},[857,2254,1052],{"class":1051},[857,2256,1189],{"class":1087},[857,2258,2259,2261,2263,2265],{"class":859,"line":884},[857,2260,1073],{"class":1051},[857,2262,1414],{"class":1047},[857,2264,1079],{"class":1051},[857,2266,1419],{"class":1047},[857,2268,2269,2271,2273,2275,2277],{"class":859,"line":890},[857,2270,1424],{"class":1047},[857,2272,1052],{"class":1051},[857,2274,1429],{"class":1047},[857,2276,1236],{"class":1051},[857,2278,1434],{"class":1047},[857,2280,2281,2283,2285,2287,2289],{"class":859,"line":1225},[857,2282,1448],{"class":1047},[857,2284,1052],{"class":1051},[857,2286,1429],{"class":1047},[857,2288,1455],{"class":1051},[857,2290,1458],{"class":1087},[857,2292,2293],{"class":859,"line":1242},[857,2294,1068],{"emptyLinePlaceholder":1067},[857,2296,2297],{"class":859,"line":1247},[857,2298,2299],{"class":1041},"# Maximum\n",[857,2301,2302,2304,2306,2308,2310],{"class":859,"line":1461},[857,2303,1615],{"class":1047},[857,2305,1052],{"class":1051},[857,2307,1620],{"class":1047},[857,2309,1555],{"class":1087},[857,2311,1389],{"class":1047},[857,2313,2314,2316,2318,2320],{"class":859,"line":1466},[857,2315,1073],{"class":1051},[857,2317,1414],{"class":1047},[857,2319,1079],{"class":1051},[857,2321,1419],{"class":1047},[857,2323,2324,2326,2328,2330],{"class":859,"line":1479},[857,2325,1204],{"class":1051},[857,2327,1414],{"class":1047},[857,2329,1647],{"class":1051},[857,2331,1650],{"class":1047},[857,2333,2335,2337,2339],{"class":859,"line":2334},13,[857,2336,1655],{"class":1047},[857,2338,1052],{"class":1051},[857,2340,1434],{"class":1047},[593,2342,1875],{"id":1874},[733,2344,2345,2360,2369],{},[736,2346,2347,2348,2350,2351,718,2353,2355,2356,2359],{},"Le ",[602,2349,903],{}," (",[778,2352,2096],{},[778,2354,2099],{},"…) n'est pas exécutable\ndirectement. Il sert à ",[602,2357,2358],{},"raisonner",", pas à lancer le programme.",[736,2361,2362,2363,766,2366,2368],{},"Les listes Python sont ",[602,2364,2365],{},"numérotées à partir de zéro",[778,2367,1696],{},"\nest la première valeur.",[736,2370,2371,2372,2375],{},"Une ",[602,2373,2374],{},"cellule vide"," peut faire planter un calcul. Sur un vrai fichier,\nprévoir un test avant la comparaison.",[593,2377,2379],{"id":2378},"au-tableur-au-mètre","Au tableur, au mètre",[636,2381,2382,2392],{},[639,2383,2384],{},[642,2385,2386,2389],{},[645,2387,2388],{},"Pour...",[645,2390,2391],{},"Cherchez le menu...",[655,2393,2394,2403,2411,2424],{},[642,2395,2396,2399],{},[660,2397,2398],{},"Filtrer",[660,2400,2401],{},[728,2402,752],{},[642,2404,2405,2407],{},[660,2406,2063],{},[660,2408,2409],{},[728,2410,769],{},[642,2412,2413,2416],{},[660,2414,2415],{},"Calculer",[660,2417,2418,718,2420,718,2422],{},[778,2419,1845],{},[778,2421,1848],{},[778,2423,1851],{},[642,2425,2426,2428],{},[660,2427,743],{},[660,2429,2430],{},[728,2431,2432],{},"Ctrl+F",[598,2434,2435,2436,2438],{},"Réflexe : commencer au tableur, basculer en Python quand on veut\n",[602,2437,626],{}," (refaire le même traitement sur cent fichiers, ou chaque\nmois).",[1951,2440,2441],{},"html pre.shiki code .sCsY4, html code.shiki .sCsY4{--shiki-light:#6A737D;--shiki-default:#6A737D;--shiki-dark:#6A737D}html pre.shiki code .sxrX7, html code.shiki .sxrX7{--shiki-light:#24292E;--shiki-default:#24292E;--shiki-dark:#E1E4E8}html pre.shiki code .s8jYJ, html code.shiki .s8jYJ{--shiki-light:#D73A49;--shiki-default:#D73A49;--shiki-dark:#F97583}html pre.shiki code .sIIMD, html code.shiki .sIIMD{--shiki-light:#032F62;--shiki-default:#032F62;--shiki-dark:#9ECBFF}html pre.shiki code .sBjJW, html code.shiki .sBjJW{--shiki-light:#005CC5;--shiki-default:#005CC5;--shiki-dark:#79B8FF}html .light .shiki span {color: var(--shiki-light);background: var(--shiki-light-bg);font-style: var(--shiki-light-font-style);font-weight: var(--shiki-light-font-weight);text-decoration: var(--shiki-light-text-decoration);}html.light .shiki span {color: var(--shiki-light);background: var(--shiki-light-bg);font-style: var(--shiki-light-font-style);font-weight: var(--shiki-light-font-weight);text-decoration: var(--shiki-light-text-decoration);}html .default .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}html.dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}",{"title":802,"searchDepth":866,"depth":866,"links":2443},[2444,2445,2446,2447,2448,2449],{"id":1999,"depth":866,"text":2000},{"id":2028,"depth":866,"text":2029},{"id":2089,"depth":866,"text":2090},{"id":2198,"depth":866,"text":2199},{"id":1874,"depth":866,"text":1875},{"id":2378,"depth":866,"text":2379},"Mémo de révision sur recherche, filtre, tri d'une table — au tableur et avec une boucle Python.",{},"\u002Fsnt-2nde\u002Fsd-donnees-structurees\u002Ftraitement-tables.memo",[],{"title":1993,"description":2450},"0.snt-2nde\u002Fsd-donnees-structurees\u002F4.traitement-tables.memo","JDPHTsmsNSWXqiw47HemeN8fpwDMooKw5Mh-2AGm5jc",{"id":2458,"title":2459,"body":2460,"description":3068,"extension":1971,"meta":3069,"navigation":1977,"path":3070,"seo":3071,"stem":3072,"__hash__":3073},"coursSlides\u002F0.snt-2nde\u002Fsd-donnees-structurees\u002F4.traitement-tables.slides.md","Traitement de tables — diapositives",{"type":590,"value":2461,"toc":3066},[2462,2466,2469,2474,2477,2479,2512,2521,2523,2525,2555,2558,2560,2564,2592,2595,2597,2601,2604,2643,2646,2648,2652,2738,2746,2748,2752,2842,2848,2850,2854,2945,2951,2953,2957,2964,2974,2985,2987,2991,3038,3045,3047,3051,3058,3064],[2463,2464,111],"h1",{"id":2465},"traitement-de-tables",[598,2467,2468],{},"Rechercher, filtrer, trier — d'abord au tableur, puis en Python.",[598,2470,2471,2472],{},"SNT Seconde — ",[629,2473],{"code":588},[2475,2476],"hr",{},[2463,2478,634],{"id":633},[636,2480,2481,2489],{},[639,2482,2483],{},[642,2484,2485,2487],{},[645,2486,647],{},[645,2488,650],{},[655,2490,2491,2498,2505],{},[642,2492,2493,2495],{},[660,2494,664],{},[660,2496,2497],{},"« Telle ligne existe-t-elle ? »",[642,2499,2500,2502],{},[660,2501,677],{},[660,2503,2504],{},"« Quelles lignes vérifient... ? »",[642,2506,2507,2509],{},[660,2508,690],{},[660,2510,2511],{},"« Du plus petit au plus grand... »",[598,2513,2514,2515,2517,2518,2520],{},"Plus : ",[602,2516,702],{}," (moyenne, max, somme) et ",[602,2519,706],{}," de tables.",[2475,2522],{},[2463,2524,711],{"id":710},[733,2526,2527,2533,2539,2545],{},[736,2528,2529,766,2531,616],{},[602,2530,664],{},[728,2532,2432],{},[736,2534,2535,766,2537,616],{},[602,2536,677],{},[728,2538,752],{},[736,2540,2541,766,2543,616],{},[602,2542,690],{},[728,2544,769],{},[736,2546,2547,766,2549,718,2551,718,2553,616],{},[602,2548,2051],{},[778,2550,780],{},[778,2552,1848],{},[778,2554,1851],{},[598,2556,2557],{},"Parfait pour quelques milliers de lignes. Au-delà ou pour automatiser :\nPython.",[2475,2559],{},[2463,2561,2563],{"id":2562},"notre-table-dexemple","Notre table d'exemple",[849,2565,2566],{"className":851,"code":852,"language":853,"meta":802,"style":802},[778,2567,2568,2572,2576,2580,2584,2588],{"__ignoreMap":802},[857,2569,2570],{"class":859,"line":860},[857,2571,863],{},[857,2573,2574],{"class":859,"line":866},[857,2575,869],{},[857,2577,2578],{"class":859,"line":872},[857,2579,875],{},[857,2581,2582],{"class":859,"line":878},[857,2583,881],{},[857,2585,2586],{"class":859,"line":884},[857,2587,887],{},[857,2589,2590],{"class":859,"line":890},[857,2591,893],{},[598,2593,2594],{},"5 enregistrements, 4 descripteurs.",[2475,2596],{},[2463,2598,2600],{"id":2599},"en-python-du-pseudo-code","En Python : du pseudo-code",[598,2602,2603],{},"On imagine des fonctions parlantes :",[636,2605,2606,2614],{},[639,2607,2608],{},[642,2609,2610,2612],{},[645,2611,943],{},[645,2613,946],{},[655,2615,2616,2625,2634],{},[642,2617,2618,2622],{},[660,2619,2620],{},[778,2621,907],{},[660,2623,2624],{},"la table",[642,2626,2627,2631],{},[660,2628,2629],{},[778,2630,974],{},[660,2632,2633],{},"la valeur d'une colonne sur une ligne",[642,2635,2636,2640],{},[660,2637,2638],{},[778,2639,911],{},[660,2641,2642],{},"toute une colonne, en liste",[598,2644,2645],{},"Ces noms n'existent pas tels quels en Python — vu en NSI 1ère.",[2475,2647],{},[2463,2649,2651],{"id":2650},"parcourir-et-filtrer","Parcourir et filtrer",[849,2653,2655],{"className":1032,"code":2654,"language":1034,"meta":802,"style":802},"# Pseudo-code : compter les admis (moyenne >= 14).\ntable = charger_table(\"eleves.csv\")\n\nnombre_admis = 0\nfor ligne in table:\n    if valeur(ligne, \"moyenne\") >= 14:\n        nombre_admis = nombre_admis + 1\n\nprint(\"Nombre d'admis :\", nombre_admis)\n",[778,2656,2657,2662,2674,2678,2686,2696,2712,2724,2728],{"__ignoreMap":802},[857,2658,2659],{"class":859,"line":860},[857,2660,2661],{"class":1041},"# Pseudo-code : compter les admis (moyenne >= 14).\n",[857,2663,2664,2666,2668,2670,2672],{"class":859,"line":866},[857,2665,1048],{"class":1047},[857,2667,1052],{"class":1051},[857,2669,1055],{"class":1047},[857,2671,1059],{"class":1058},[857,2673,1062],{"class":1047},[857,2675,2676],{"class":859,"line":872},[857,2677,1068],{"emptyLinePlaceholder":1067},[857,2679,2680,2682,2684],{"class":859,"line":878},[857,2681,1184],{"class":1047},[857,2683,1052],{"class":1051},[857,2685,1189],{"class":1087},[857,2687,2688,2690,2692,2694],{"class":859,"line":884},[857,2689,1073],{"class":1051},[857,2691,1076],{"class":1047},[857,2693,1079],{"class":1051},[857,2695,1082],{"class":1047},[857,2697,2698,2700,2702,2704,2706,2708,2710],{"class":859,"line":890},[857,2699,1204],{"class":1051},[857,2701,1207],{"class":1047},[857,2703,1210],{"class":1058},[857,2705,1213],{"class":1047},[857,2707,1216],{"class":1051},[857,2709,1219],{"class":1087},[857,2711,1222],{"class":1047},[857,2713,2714,2716,2718,2720,2722],{"class":859,"line":1225},[857,2715,1228],{"class":1047},[857,2717,1052],{"class":1051},[857,2719,1233],{"class":1047},[857,2721,1236],{"class":1051},[857,2723,1239],{"class":1087},[857,2725,2726],{"class":859,"line":1242},[857,2727,1068],{"emptyLinePlaceholder":1067},[857,2729,2730,2732,2734,2736],{"class":859,"line":1247},[857,2731,1250],{"class":1087},[857,2733,1253],{"class":1047},[857,2735,1256],{"class":1058},[857,2737,1259],{"class":1047},[598,2739,2740,2741,616],{},"Patron : ",[602,2742,2743,2744,2195],{},"compteur → boucle → ",[778,2745,1287],{},[2475,2747],{},[2463,2749,2751],{"id":2750},"calculer-une-moyenne-vrai-python","Calculer une moyenne (vrai Python)",[849,2753,2755],{"className":1032,"code":2754,"language":1034,"meta":802,"style":802},"moyennes = [14.5, 12.8, 17.2, 9.4, 15.7]\n\ntotal = 0\nfor m in moyennes:\n    total = total + m\n\nmoyenne_classe = total \u002F 5\nprint(moyenne_classe)\n",[778,2756,2757,2785,2789,2797,2807,2819,2823,2835],{"__ignoreMap":802},[857,2758,2759,2761,2763,2765,2767,2769,2771,2773,2775,2777,2779,2781,2783],{"class":859,"line":860},[857,2760,1358],{"class":1047},[857,2762,1052],{"class":1051},[857,2764,1363],{"class":1047},[857,2766,1366],{"class":1087},[857,2768,718],{"class":1047},[857,2770,1371],{"class":1087},[857,2772,718],{"class":1047},[857,2774,1376],{"class":1087},[857,2776,718],{"class":1047},[857,2778,1381],{"class":1087},[857,2780,718],{"class":1047},[857,2782,1386],{"class":1087},[857,2784,1389],{"class":1047},[857,2786,2787],{"class":859,"line":866},[857,2788,1068],{"emptyLinePlaceholder":1067},[857,2790,2791,2793,2795],{"class":859,"line":872},[857,2792,1403],{"class":1047},[857,2794,1052],{"class":1051},[857,2796,1189],{"class":1087},[857,2798,2799,2801,2803,2805],{"class":859,"line":878},[857,2800,1073],{"class":1051},[857,2802,1414],{"class":1047},[857,2804,1079],{"class":1051},[857,2806,1419],{"class":1047},[857,2808,2809,2811,2813,2815,2817],{"class":859,"line":884},[857,2810,1424],{"class":1047},[857,2812,1052],{"class":1051},[857,2814,1429],{"class":1047},[857,2816,1236],{"class":1051},[857,2818,1434],{"class":1047},[857,2820,2821],{"class":859,"line":890},[857,2822,1068],{"emptyLinePlaceholder":1067},[857,2824,2825,2827,2829,2831,2833],{"class":859,"line":1225},[857,2826,1448],{"class":1047},[857,2828,1052],{"class":1051},[857,2830,1429],{"class":1047},[857,2832,1455],{"class":1051},[857,2834,1458],{"class":1087},[857,2836,2837,2839],{"class":859,"line":1242},[857,2838,1250],{"class":1087},[857,2840,2841],{"class":1047},"(moyenne_classe)\n",[598,2843,2844,2845,2847],{},"Au tableur : ",[778,2846,1523],{},". Une cellule, fini.",[2475,2849],{},[2463,2851,2853],{"id":2852},"trouver-le-maximum","Trouver le maximum",[849,2855,2857],{"className":1032,"code":2856,"language":1034,"meta":802,"style":802},"moyennes = [14.5, 12.8, 17.2, 9.4, 15.7]\n\nmaximum = moyennes[0]\nfor m in moyennes:\n    if m > maximum:\n        maximum = m\n\nprint(\"Meilleure moyenne :\", maximum)\n",[778,2858,2859,2887,2891,2903,2913,2923,2931,2935],{"__ignoreMap":802},[857,2860,2861,2863,2865,2867,2869,2871,2873,2875,2877,2879,2881,2883,2885],{"class":859,"line":860},[857,2862,1358],{"class":1047},[857,2864,1052],{"class":1051},[857,2866,1363],{"class":1047},[857,2868,1366],{"class":1087},[857,2870,718],{"class":1047},[857,2872,1371],{"class":1087},[857,2874,718],{"class":1047},[857,2876,1376],{"class":1087},[857,2878,718],{"class":1047},[857,2880,1381],{"class":1087},[857,2882,718],{"class":1047},[857,2884,1386],{"class":1087},[857,2886,1389],{"class":1047},[857,2888,2889],{"class":859,"line":866},[857,2890,1068],{"emptyLinePlaceholder":1067},[857,2892,2893,2895,2897,2899,2901],{"class":859,"line":872},[857,2894,1615],{"class":1047},[857,2896,1052],{"class":1051},[857,2898,1620],{"class":1047},[857,2900,1555],{"class":1087},[857,2902,1389],{"class":1047},[857,2904,2905,2907,2909,2911],{"class":859,"line":878},[857,2906,1073],{"class":1051},[857,2908,1414],{"class":1047},[857,2910,1079],{"class":1051},[857,2912,1419],{"class":1047},[857,2914,2915,2917,2919,2921],{"class":859,"line":884},[857,2916,1204],{"class":1051},[857,2918,1414],{"class":1047},[857,2920,1647],{"class":1051},[857,2922,1650],{"class":1047},[857,2924,2925,2927,2929],{"class":859,"line":890},[857,2926,1655],{"class":1047},[857,2928,1052],{"class":1051},[857,2930,1434],{"class":1047},[857,2932,2933],{"class":859,"line":1225},[857,2934,1068],{"emptyLinePlaceholder":1067},[857,2936,2937,2939,2941,2943],{"class":859,"line":1242},[857,2938,1250],{"class":1087},[857,2940,1253],{"class":1047},[857,2942,1672],{"class":1058},[857,2944,1675],{"class":1047},[598,2946,2947,2948,616],{},"On garde toujours en mémoire ",[602,2949,2950],{},"le meilleur rencontré",[2475,2952],{},[2463,2954,2956],{"id":2955},"et-le-tri","Et le tri ?",[598,2958,2959,2960,2963],{},"Trier, c'est ",[602,2961,2962],{},"réorganiser les mêmes lignes"," selon un descripteur.",[733,2965,2966,2971],{},[736,2967,2844,2968,616],{},[728,2969,2970],{},"Données → Trier → Colonne « age »",[736,2972,2973],{},"En Python : Python sait le faire — mécanisme exact en NSI 1ère.",[598,2975,2976,2977,2980,2981,2984],{},"L'important : le ",[602,2978,2979],{},"contenu"," ne change pas, seul l'",[602,2982,2983],{},"ordre"," change.",[2475,2986],{},[2463,2988,2990],{"id":2989},"pseudo-code-vs-vrai-python","Pseudo-code vs vrai Python",[636,2992,2993,3002],{},[639,2994,2995],{},[642,2996,2997,2999],{},[645,2998,930],{},[645,3000,3001],{},"Vrai Python",[655,3003,3004,3015,3027],{},[642,3005,3006,3010],{},[660,3007,3008],{},[778,3009,907],{},[660,3011,3012],{},[778,3013,3014],{},"[14.5, 12.8, 17.2, 9.4, 15.7]",[642,3016,3017,3022],{},[660,3018,3019],{},[778,3020,3021],{},"valeur(ligne, \"moyenne\")",[660,3023,3024,3026],{},[778,3025,1681],{}," directement dans la boucle",[642,3028,3029,3032],{},[660,3030,3031],{},"logique générale",[660,3033,3034,3035],{},"logique sur une ",[602,3036,3037],{},"liste déjà prête",[598,3039,3040,3041,3044],{},"Le pseudo-code décrit l'",[602,3042,3043],{},"idée"," ; le vrai Python s'écrit dès que la liste\nde nombres est en main.",[2475,3046],{},[2463,3048,3050],{"id":3049},"à-retenir","À retenir",[598,3052,3053,3054,3057],{},"Le triptyque ",[602,3055,3056],{},"recherche \u002F filtre \u002F tri"," suffit à répondre à l'immense\nmajorité des questions qu'on se pose sur une table.",[598,3059,3060,3061,616],{},"Tableur d'abord, Python ensuite — mais la logique est la ",[602,3062,3063],{},"même",[1951,3065,1953],{},{"title":802,"searchDepth":866,"depth":866,"links":3067},[],"Deck projetable pour la séance sur recherche, filtre, 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