classes-02

class Cauldron_Pers(Cauldron):
    def __init__(self, size, material, owner, contents=[], mark=None):
        super().__init__(size, material, contents)
        self.owner = owner
        self.mark = mark
    
my = Cauldron_Pers('medium', 'cooper', 'Alla')
my.owner
my.mark

class Cauldron_Pers(Cauldron):
    def __init__(self, size, material, owner, contents=[], mark=None):
        super().__init__(size, material, contents)
        self.owner = owner
        self.mark = mark
    def set_mark(self, m):
        self.mark = m

my.set_mark(2)
my.mark