Declarative syntax #hypermove #python #python3

magna.py

class Property:

    def __init__(self, *variables, **options):
        self.variables = variables
        self.options = options
        self.name = None

    def __get__(self, obj, klass):
        print(obj)
        return obj._values[self.name]

    def __set__(self, obj, value):
        print(obj)
        obj._values[self.name] = value


class Meta(type):

    def __new__(klass, name, bases, attributes):
        klass._properties = dict()
        for name, attribute in attributes.items():
            if isinstance(attribute, Property):
                attribute.name = name
                klass._properties[name] = attribute
        return super().__new__(
            klass,
            name, 
            bases, 
            attributes
        )


class Model(metaclass=Meta):

    def __init__(self):
        self._values = dict()