Mentoria python - AsyncIO

empacotando-balas.py

import asyncio

# Python 3.3 - Decorators
@asyncio.coroutine
def empacotar_bala():
    print("Empacotando balas...")

    # parada para verificar se tem cliente no balcão
    yield from asyncio.sleep(0)

    # troca de contexto
    print("Explicitamente voltando a empacotar balas")


@asyncio.coroutine
def atender_balcao():
    print("Explicitamente verificando se tem cliente no balcão...")

    yield from asyncio.sleep(0)

    print("Voltando a empacotar as balas")


# Python 3.5 - Async/Await nativo
async def empacotar_bala_native():
    print("Empacotando balas...")

    # parada para verificar se tem cliente no balcão
    await asyncio.sleep(0)

    # troca de contexto
    print("Explicitamente voltando a empacotar balas")


async def atender_balcao_native():
    print("Explicitamente verificando se tem cliente no balcão...")

    await asyncio.sleep(0)

    print("Voltando a empacotar as balas")


ioloop = asyncio.get_event_loop()  # Event Loop

# Roda decorators
tasks = [ioloop.create_task(empacotar_bala()),
         ioloop.create_task(atender_balcao())]

# Roda async/await
# tasks = [ioloop.create_task(empacotar_bala_native()),
#          ioloop.create_task(atender_balcao_native())]


wait_tasks = asyncio.wait(tasks)

ioloop.run_until_complete(wait_tasks) # This will not return until all of the asynchronous methods are done.

ioloop.close()