async_node_python-main_concurrent.py

async def main_concurrent():
    t = time.perf_counter()
    tasks = [asyncio.create_task(handle_url(url))
             for url in urls]

    ## All of the variants below would wait for everything:

    # V1: this will wait as little as possible
    #   (point of this is to show that tasks start executing when created)
    # for task in tasks:
    #     await task

    # V2: ensures all is done by waiting for longest possible time
    # await asyncio.sleep(11)

    # V3: the kind of code one could actually write in real life
    #   (but it's a bit redundant: `wait` or `gather` can also receive
    #    coroutines and can start and run them properly)
    await asyncio.wait(tasks)

    print("> extracted data:", extracted_data)
    print(f"time elapsed: {time.perf_counter() - t:.2f}s")