Running multiple coroutines concurrently

coroutine_5.py

import asyncio
import time


async def me_first():
    await asyncio.sleep(1)

    return "I'm first!"


async def me_second():
    await asyncio.sleep(1)

    return "Then me!"


async def me_third():
    await asyncio.sleep(1)

    return "And finally me!"


async def main():
    start = time.perf_counter()

    # Init all coroutines
    first_coroutine = me_first()
    second_coroutine = me_second()
    third_coroutine = me_third()

    # Schedule all coroutines to run concurrently and wait on all to return
    await asyncio.gather(*[first_coroutine, second_coroutine, third_coroutine])

    end = time.perf_counter()

    print(f"It took {end - start} seconds to complete all operations\n")


asyncio.run(main())

# Output:
#
# It took 1.0012879579999208 seconds to complete all operations