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import asyncio

import sys

import contextlib

@asyncio.coroutine

def show_remaining(dots_task):

remaining = 5

while remaining:

print('Remaining: ', remaining)

sys.stdout.flush()

yield from asyncio.sleep(1)

remaining -= 1

dots_task.cancel()

print()

@asyncio.coroutine

def dots():

while True:

print('.', sep='', end='')

sys.stdout.flush()

yield from asyncio.sleep(.1)

def main():

with contextlib.closing(asyncio.get_event_loop()) as loop:

dots_task = asyncio.Task(dots())

coros = [show_remaining(dots_task), dots_task]

loop.run_until_complete(asyncio.wait(coros))

if __name__ == '__main__':

main()