Method get_property

lib/sqlalchemy/orm/mapper.py:2523–2538

return a MapperProperty associated with the given key.

(
        self, key: str, _configure_mappers: bool = False
    )

        return key in self._props

    def get_property(
        self, key: str, _configure_mappers: bool = False
    ) -> MapperProperty[Any]:
        """return a MapperProperty associated with the given key."""

        if _configure_mappers:
            self._check_configure()

        try:
            return self._props[key]
        except KeyError as err:
            raise sa_exc.InvalidRequestError(
                f"Mapper '{self}' has no property '{key}'.  If this property "
                "was indicated from other mappers or configure events, ensure "
                "registry.configure() has been called."
            ) from err

    def get_property_by_column(
        self, column: ColumnElement[_T]