POO
Exercices de POO - série 4
Exercice 1 : la domotique (I)
La domotique (I)
Exercice 2 : la domotique (II)
La domotique (II)
Exercice 3 : Élève en POO
On souhaite dans cet exercice créer une classe Eleve ayant quatre attributs :
un prénom prenom de type str ;
un nom nom de type str ;
une classe classe de type str ;
des moyennes moyennes de type dict . Ce dictionnaire associe à des intitulés de matières (str ), les moyennes correspondantes (au format int ou float ).
Cet exercice est en plusieurs parties et demande de compléter la classe Eleve en ajoutant différentes méthodes.
Il est progressif, il ne faut pas passer à la question suivante sans avoir terminé celle en cours.
Constructeur
Lors de la création d'un objet de type Eleve, on fournit les valeurs des attributs prenom, nom et classe (dans cet ordre ).
L'attribut moyennes est initialement vide.
Compléter le constructeur de la classe Eleve.
Exemple
>>> albert = Eleve ( "Albert" , "Einstein" , "Te2" )
>>> albert . prenom
'Albert'
>>> albert . nom
'Einstein'
>>> albert . classe
'Te2'
>>> albert . moyennes
{}
Version vide Version à compléter
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Méthode modifie_moyenne
La méthode modifie_moyenne prend deux paramètres, un intitulé de matière (str ) et une moyenne (au format int ou float ) et ajoute ce couple (clé: valeur) à l'attribut moyennes d'un objet Eleve.
Écrire la méthode modifie_moyenne.
Exemple
>>> carl = Eleve ( "Carl Friedrich" , "Gauss" , "Te3" )
>>> carl . modifie_moyenne ( "arithmétique" , 20 )
>>> carl . modifie_moyenne ( "chimie" , 12 )
>>> carl . moyennes
{'arithmétique': 20, 'chimie': 12}
>>> carl . modifie_moyenne ( "chimie" , 13 )
>>> carl . moyennes
{'arithmétique': 20, 'chimie': 13}
Version vide Version à compléter
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Méthode moyenne_de
La méthode moyenne_de prend en unique paramètre un intitulé de matière (str ) et renvoie la moyenne de cet élève dans cette matière.
Si l'élève ne possède pas de moyenne dans cette matière, la fonction renverra None .
Écrire la méthode moyenne_de.
Exemple
>>> donald = Eleve ( "Donald" , "Knuth" , "Te7" )
>>> donald . modifie_moyenne ( "informatique" , 20 )
>>> donald . modifie_moyenne ( "musique" , 13 )
>>> donald . moyenne_de ( "informatique" )
20
>>> donald . moyenne_de ( "musique" )
13
>>> donald . moyenne_de ( "lancer de javelot" )
>>>
Version vide Version à compléter
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Méthode moyenne_simple
La méthode moyenne_simple calcule et renvoie la moyenne générale de l'élève. Celle-ci se calcule en effectuant la moyenne des moyennes.
Si l'élève n'a aucune moyenne, la fonction renverra None .
Écrire la méthode moyenne_simple.
Exemple
>>> jane = Eleve ( "Jane" , "Goodall" , "Te3" )
>>> jane . modifie_moyenne ( "éthologie" , 20 )
>>> jane . modifie_moyenne ( "théorie des groupes" , 1 )
>>> jane . moyenne_simple ()
10.5
Version vide Version à compléter
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Méthode moyenne_ponderee
La méthode moyenne_ponderee prend comme unique paramètre un dictionnaire coeffs associant des intitulés de matières (str ) à des coefficients (au format int ou float ).
Cette fonction calcule la moyenne pondérée de l'élève en appliquant les coefficients fournis en paramètre.
Si l'élève n'a aucune moyenne, la fonction renverra None .
On garantit que dictionnaire coeffs contient toutes les clés correspondant aux matières du dictionnaire moyennes .
Écrire la méthode moyenne_ponderee.
Exemple
>>> margaret = Eleve ( "Margaret" , "Hamilton" , "Te5" )
>>> margaret . modifie_moyenne ( "études spatiales" , 20 )
>>> margaret . modifie_moyenne ( "maths" , 14 )
>>> coeffs = { "études spatiales" : 1 , "maths" : 0.5 }
>>> margaret . moyenne_ponderee ( coeffs )
18.0
Version vide Version à compléter
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D'après un exercice de Nicolas Revéret
Exercice 4 : le livret d'épargne
Livret d'épargne
Continuer à s'entraîner sur CodEX
Vous pouvez faire tous les exercices de la section programmation orientée objet des Parcours informatiques
Pour approfondir : Les fractions égyptiennes
Pour le fun - travail facultatif
Si vous avez du temps ... et aimez les mathématiques ...
Fractions égyptiennes
⏳ La correction viendra bientôt ... si vous la demandez à votre professeur après lui avoir montré votre travail ... 😊
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