music album

class Duree:
    def __init__ (self, h, m, s):

        self.heures = h
        self.minutes = m
        self.secondes = s

        #if m < 60 and m >= 0 and s >= 0 and s < 60:
           # return True

    def toSecondes (self):

        self.secondes = self.secondes + 60* self.minutes + 3600* self.heures
        return self.secondes

    def delta(self, d):
        self.d = d
        return self.secondes - self.d

    def apres (self, d):

        self.d_passee = d

        if self.secondes  >= self.d_passee:
            return True
        else:
            return False


    def ajouter ( self, d):

        self.dur = d
        self.secondes += self.dur
        s= self.secondes
        m=0
        h=0
        if s >= 0 and s > 60:
            m  += s // 60
            s -=  (s // 60) * 60

        if m >= 0 and m  > 60:
            h += m // 60
            m -=  ( m // 60)*60


        return '{:02}:{:02}:{:02}'.format(h, m, s)
    def __str__(self):

        return '{:02}:{:02}:{:02}'.format(self.heures, self.minutes, self.secondes)


duree = Duree(1,20,30)
print( duree)
print(duree.toSecondes())
print(duree.delta(50))
print(duree.apres(3550))
print(duree.ajouter(70))


print("\n---- 2éme classe----\n")

class Chanson:

    def __init__(self, t,a,d):
        self.titre = t
        self.auteur = a
        self.duree = d

    def __str__(self):

        return str(self.titre) + " - " + str(self.auteur) + " - " + str(self.duree)

chanson = Chanson ("Let's_Danc", "David_Bowie", Duree(0,4,5))
print(chanson)




print("\n---- 3éme classe----\n")




class Album:

    def __init__(self, album = None):                                                    # an empty album
        self.album = album

    def add(self, chanson):
        self.album += Chanson("Let's_Danc", "David_Bowie", Duree(0,4,5))  #it will add the title , the autor , the delay
        return self.album                                                                                                              #  of the song to album

    def __str__(self):

        return '{:02}:  '.format(self.album)


alb = Album()
alb.album =  Chanson("Lert","fgf",Duree(0,55,4))
print(alb)