print_numbers_async.py

import asyncio
from datetime import datetime


async def get_number(number):
    await asyncio.sleep(1)
    print("%s - %s" % (datetime.now(), number))

loop = asyncio.get_event_loop()
tasks = []
for number in range(10):
    tasks.append(get_number(number))

loop.run_until_complete(asyncio.wait(tasks))