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uasyncio: current_task behaviour differs from CPython #11530
Description
Background: I am looking for a way detect whether a function has been called in a uasyncio context. The asyncio_running function works in CPython, but in MP it fails if a uasyncio script has previously run. In the absence of a fix, a non-hacky workround would be appreciated :)
Repro:
try:
import uasyncio as asyncio
except:
import asyncio
def asyncio_running():
try:
_ = asyncio.current_task()
except:
return False
return True
def prun(txt):
print(f"{txt}: asyncio {'' if asyncio_running() else 'not'} running")
prun("Start")
async def foo():
prun("In task")
await asyncio.sleep(1)
try:
asyncio.run(foo())
finally:
_ = asyncio.new_event_loop()
prun("At end")On CPython 3.8.10:
>>> import rats25
Start: asyncio not running
In task: asyncio running
At end: asyncio not running
On MP 1.20 (tested on Unix and RP2):
>>> import rats25
Start: asyncio not running
In task: asyncio running
At end: asyncio running
Activity
dpgeorge commentedon Feb 28, 2024
Fixed by 8692d26
extmod/asyncio: Make current_task raise exception when there is no task.
extmod/asyncio: Make current_task raise exception when there is no task.
extmod/asyncio: Make current_task raise exception when there is no task.
extmod/asyncio: Make current_task raise exception when there is no task.
extmod/asyncio: Make current_task raise exception when there is no task.
Merge pull request micropython#11530 from dhalbert/usb-drive-reenable