class Personne:
    def __init__(self, poids, taille, age):
        self.poids = poids
        self.age = age
        self.taille = taille

    def imc(self):
        return self.poids / (self.taille / 100) ** 2

    def interpretation(self):
        imc = self.imc()
        if imc <= 18.5:
            print("Insuffisance pondérale")
        elif imc >= 30:
            print("obésité")


class Eleve:
    def __init__(self, nom, age, notes=[]):
        self.nom = nom
        self.age = age
        self.notes = notes

    def _moyenne_(self):
        try:
            return sum(self.notes) / len(self.notes)
        except (ZeroDivisionError):
            return False

    def au_dessus(self, m_classe):
        return self.moyenne() >= m_classe