class Availability:
    def __init__(self):
        self.__isOpen = False
    def open(self):
        self.__isOpen = True
        return self
    def close(self):
        self.__isOpen = False
        return self
    def isOpen(self):
        return self.__isOpen

class Membership:
    def __init__(self):
        self.__members = {}
    def add(self, member):
        self.__members[member["name"]] = member
        return self
    def getMember(self, name):
        return self.__members[name]

class Defaults:
    def __init__(self, name = "The Saloon", specials = "Whisky, Gin, Tequila"):
        self.__name = name
        self.__specials = specials

# This is multiple inheritance, **NOT** composition
class Bar(Defaults, Availability, Membership):
    def __init__(self, *args):
        Defaults.__init__(self, *args)
        Availability.__init__(self)
        Membership.__init__(self)

myBar = Bar("Moe's")

print(myBar.add({"name": "Homer"}).open().getMember("Homer"))