asyncio_gather.py

import asyncio

async def bar(i):
    print('started', i)
    await asyncio.sleep(1)
    print('finished', i)
    if i == 5:
        raise ValueError("Foo")
    return i


asyncio.set_event_loop(asyncio.new_event_loop())
loop = asyncio.get_event_loop()
tasks = asyncio.gather(*(bar(i) for i in range(10)), return_exceptions=True)
loop.run_until_complete(tasks)
results = tasks.result()
print(results)
loop.close()