Non-interruptible asyncio program after PR #305

test_pr305.py

import asyncio


async def background():
    while running:
        await asyncio.sleep(0)
        [x**2 for x in range(10**5)]
        
async def main():
    return await asyncio.sleep(20, result='hello')



# Schedule the background task
running = True
loop = asyncio.get_event_loop()
background_task = asyncio.ensure_future(background())

# Run the main task
try:
    result = loop.run_until_complete(main())
except KeyboardInterrupt:
    print('Interrupted!')
else:
    print(result)
    
# Stop the background task
running = False
if background_task.done():
    background_task.exception()
else:
    loop.run_until_complete(background_task)
loop.close()