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importer.py

import kind

kind.py

from dataclasses import dataclass
from typing import TypeVar, Generic, Any, Iterable, List

T = TypeVar("T")

# See https://github.com/python/mypy/issues/5485


@dataclass
class Box(Generic[T]):
    inner: T

    @property
    def unboxed(self) -> T:
        return self.inner