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fail.py

import asyncio
import sys

async def test():
    1//0

loop = asyncio.get_event_loop()

def asyncio_handler(loop, context):
    print("XXXX", "got", context)

def sys_handler(*args, **kwargs):
    print("sync handler")

sys.excepthook = sys_handler
loop.set_exception_handler(asyncio_handler)

print('asyncio exception handler:', loop.get_exception_handler())
print('sys.excepthook', sys.excepthook)
task = loop.create_task(test())
loop.run_until_complete(task)

loop.run_until_complete(asyncio.sleep(1))