#Programme en POO qui comprend des méthodes qui permettent de calculer la moyenne d'un élèves parmi ceux d'un tableau

class ElevesNotes:
    def __init__(self, eleve, notes):

        self.notes = notes
        self.eleve = eleve

    def enfile(self, note, indice_eleve):
        return self.notes[indice_eleve].append(note)

    def defile(self, indice_note, indice_eleve):
        return self.notes[indice_eleve].pop(indice_note)

    def ajout_eleve(self, nom_eleve, noms_eleves, ses_notes):
        return noms_eleves.append(nom_eleve)
        return self.notes.append(ses_notes)

    def moyenne(self):
        total = 0
        for i in self.notes[self.eleve]:
            total += i
        moyenne = total/len(self.notes[self.eleve])
        return moyenne

eleves = ["a","b","c","d"]
notes = [[12,13,15,19],[11,17,14,9],[13,15,18,18],[10,20,20,20]]

for i in range(len(eleves)):
    eleves_notes = ElevesNotes(i,notes)
    print("la moyenne de l'élève",i,"est",eleves_notes.moyenne())

print("Nouvelle note!")

eleves_notes.enfile(17, 0)
eleves_notes.enfile(7, 1)
eleves_notes.enfile(1, 2)
eleves_notes.enfile(12, 3)

for i in range(len(eleves)):
    eleves_notes = ElevesNotes(i,notes)
    print("la moyenne de l'élève",eleves[i],"est",eleves_notes.moyenne())

print("Suppression d'une note!")

eleves_notes.defile(0, 0)
eleves_notes.defile(0, 1)
eleves_notes.defile(0, 2)
eleves_notes.defile(0, 3)

for i in range(len(eleves)):
    eleves_notes = ElevesNotes(i,notes)
    print("la moyenne de l'élève",eleves[i],"est",eleves_notes.moyenne())

print("Ajout d'un élève!'")

eleves_notes.ajout_eleve("e", eleves, [20,20,18,19])

for i in range(len(eleves)):
    eleves_notes = ElevesNotes(i,notes)
    print("la moyenne de l'élève",eleves[i],"est",eleves_notes.moyenne())