threads_example.py

import asyncio


def compute_pi(digits):
    # implementation
    return 3.14

async def main(loop):
    digits = await loop.run_in_executor(None, compute_pi, 20000)
    print(("pi: %s" % digits))

loop = asyncio.get_event_loop()
loop.run_until_complete(main(loop))
loop.close()