What is the difference between concurrent.futures and asyncio.futures?
The asyncio documentation covers the differences:
class
asyncio.Future(*, loop=None)This class is almost compatible with
concurrent.futures.Future.Differences:
result()andexception()do not take a timeout argument and raise an exception when the future isn’t done yet.- Callbacks registered with
add_done_callback()are always called via the event loop’scall_soon_threadsafe().- This class is not compatible with the
wait()andas_completed()functions in theconcurrent.futurespackage.This class is not thread safe.
Basically, if you're using ThreadPoolExecutor or ProcessPoolExecutor, or want to use a Future directly for thread-based or process-based concurrency, use concurrent.futures.Future. If you're using asyncio, use asyncio.Future.
From the docs:
[
asyncioprovides a] Future class that mimics the one in the concurrent.futures module, but adapted for use with the event loop;