contextmanager_in_threadpool

Converts a synchronous context manager into an asynchronous context manager by executing its enter and exit methods within a threadpool to avoid blocking the event loop.

def contextmanager_in_threadpool(
    cm: AbstractContextManager[_T]
) - > AsyncGenerator[_T, None]

Wraps a synchronous context manager to be used asynchronously by executing its enter and exit logic within a separate thread pool. This allows blocking context managers to be used in async code without stalling the event loop, using a dedicated capacity limiter for the exit phase to prevent deadlocks.

Parameters

Name	Type	Description
cm	AbstractContextManager[_T]	The synchronous context manager instance to be executed within the thread pool.

Returns

Type	Description
AsyncGenerator[_T, None]	An asynchronous generator that yields the resource managed by the synchronous context manager.