Method __init__

lib/sqlalchemy/util/langhelpers.py:1730–1753

(
        cls,
        classname: str,
        bases: Tuple[Type[Any], ...],
        dict_: Dict[str, Any],
        **kw: Any,
    )

class _IntFlagMeta(type):
    def __init__(
        cls,
        classname: str,
        bases: Tuple[Type[Any], ...],
        dict_: Dict[str, Any],
        **kw: Any,
    ) -> None:
        items: List[symbol]
        cls._items = items = []
        for k, v in dict_.items():
            if re.match(r"^__.*__$", k):
                continue
            if isinstance(v, int):
                sym = symbol(k, canonical=v)
            elif not k.startswith("_"):
                raise TypeError("Expected integer values for IntFlag")
            else:
                continue
            setattr(cls, k, sym)
            items.append(sym)

        cls.__members__ = _collections.immutabledict(
            {sym.name: sym for sym in items}
        )

    def __iter__(self) -> Iterator[symbol]:
        raise NotImplementedError(