asyncio.wait([a sequence of futures])

asyncio.wait_for(a single future)

import asyncio
from itertools import count

async def counter1():
    cnt = count(1)
    try:
        while True:
            print('From 1:', next(cnt))
            await asyncio.sleep(1)
    except asyncio.CancelledError:
        print('counter1 cancelled')

async def counter2():
    cnt = count(1)
    for i in range(5):
        print('From 2:', next(cnt))
        await asyncio.sleep(1)
    cnt1.cancel()
#   await asyncio.wait([cnt1])  # works
#   await asyncio.wait_for(cnt1)  # hangs
    await asyncio.wait_for(cnt1, 1)  # works
    loop.stop()

loop = asyncio.get_event_loop()
cnt1 = asyncio.ensure_future(counter1())
cnt2 = asyncio.ensure_future(counter2())
loop.run_forever()