class Product():
    attribute = []
    def __init__(self, name = None):
        if name :
            self.name = name
        else:
            self.name = "Unknown"
        self.description = "None"
        self.price = 0
    def getName(self):
        return self.name
    def getDescription(self):
        return self.description

class Attribute():
    def __init__(self,product, attr):
        self.product = product
        self.product.attribute.append(attr)

class Color():
    def __init__(self):
        pass
    def Red(self):
        return {'color': 'red'}
    def Blue(self):
        return {'color': 'blue'}

class Size():
    def __init__(self):
        pass
    def Small(self):
        return {'size': 'small'}
    def Big(self):
        return {'site': 'big'}