from typing import Any, Generic, TypeVar

T = TypeVar('T')


class BaseValue(Generic[T]):
    __slots__ = ('data', )

    data: T

    def __init__(self, data: T) -> None:
        self.data = data

    def __eq__(self, other: Any) -> bool:
        return self.__class__ is other.__class__ and self.data == other.data

    def __repr__(self) -> str:
        return f'{self.__class__.__name__}({repr(self.data)})'


class UntypedValue(BaseValue[Any]):
    pass


class BytesValue(BaseValue[bytes]):
    pass