_event_context_manager.py

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import asyncio
from typing import Any, Generic, TypeVar

T = TypeVar("T")


class EventContextManagerImpl(Generic[T]):
    def __init__(self, future: asyncio.Future) -> None:
        self._future: asyncio.Future = future

    @property
    def future(self) -> asyncio.Future:
        return self._future

    async def __aenter__(self) -> asyncio.Future:
        return self._future

    async def __aexit__(self, *args: Any) -> None:
        await self._future

PYTHON _event_context_manager.py