Asyncio iterator

async_collection.py

import asyncio
import random

ten = tuple(range(10))


async def ran_sleep(param):
    value = random.choice(ten)
    await asyncio.sleep(value)
    print("{0} Sleep value:{1}".format(param, value))
    return (param, value)


async def main():
    results = await asyncio.gather(*map(ran_sleep, range(20)))
    print(results)


async def main1():
    results = await asyncio.gather(*[ran_sleep(num) for num in range(20)])
    print(results)


async def main2():
    results = [await ran_sleep(num) for num in range(20)]
    print(results)


asyncio.run(main())  # Concurrent
asyncio.run(main1())  # Concurrent
asyncio.run(main2())  # NOT Concurrent