John Belmonte <[email protected]> added the comment:
demonstrating the difference for async case:
import contextlib
import trio
async def background():
assert False
async def main1():
async with trio.open_nursery() as nursery:
nursery.start_soon(background)
await trio.sleep_forever()
async def main2():
async with contextlib.AsyncExitStack() as stack:
nursery = await stack.enter_async_context(trio.open_nursery())
nursery.start_soon(background)
await trio.sleep_forever()
try:
trio.run(main1)
except BaseException as e:
print('main1, context:', e.__context__)
try:
trio.run(main2)
except BaseException as e:
print('main2, context:', e.__context__)
----
main1, context: None
main2, context: Cancelled
----------
_______________________________________
Python tracker <[email protected]>
<https://bugs.python.org/issue44594>
_______________________________________
_______________________________________________
Python-bugs-list mailing list
Unsubscribe:
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
