from dataclasses import dataclass, field
from typing import Any, Generic, TypeVar, TypeVarTuple, Union, Unpack

T = TypeVar("T")
L = TypeVarTuple("L")
ID = int

@dataclass
class Cache(Generic[*L, T]):
    cached: list[T] = field(default_factory=list)
    lookups: dict[type[Union[*L]], dict[Union[*L], ID]] = field(default_factory=dict)

    def __getitem__(self, key: Union[*L]) -> T:
        id = self.lookups[type(key)][key]

        return self.cached[id]

    def __setitem__(self, keys: tuple[Unpack[L]], value: T) -> None:
        print(type(keys), keys)
        id = len(self.cached)
        self.cached.append(value)

        for key in keys:
            self.lookups.setdefault(type(key), {})
            self.lookups[type(key)][key] = id


if __name__ == "__main__":
    c = Cache[int, str, str]()

    print(c)
    c[0, None] = "a"
    print(c)