My base classes

test.py

class TypeBase(Object):
    def __init__(self):
        self.codeTypes = {}

    def id():
        raise NotImplementedError()

    def name():
        raise NotImplementedError()

    def desc(self):
        return self.name()

    def color():
        raise NotImplementedError()

    def addCodeType(self, codeType):
        self.codeTypes[codeType.codeName()] = codeType

    ### TODO add create and init

class TypeCode(Object):
    def typeId():
        raise NotImplementedError()

    def codeName():
        raise NotImplementedError()

    def init(self):
        raise NotImplementedError()

    def create(self, symbols, type, id):
        raise NotImplementedError

baseTypes = {}
def on_TypeBase(tb):
    baseTypes[tb.id()] = tb
def on_TypeCode(tc):
    baseTypes[tc.typeId()].addCodeType(tc)