python 等待进程池结束

import json
import multiprocessing
import settings
from nameko.standalone.rpc import ClusterRpcProxy
from nameko.standalone.events import event_dispatcher
from nameko.constants import NON_PERSISTENT, PERSISTENT


config = {
    'AMQP_URI': f'amqp://{settings.RABBITMQ_CONFIG.username}:'
                f'{settings.RABBITMQ_CONFIG.password}@{settings.RABBITMQ_CONFIG.host}:'
                f'{settings.RABBITMQ_CONFIG.port}/{settings.RABBITMQ_CONFIG.vhost}'
}


dispatch = event_dispatcher(
    config, delivery_mode=NON_PERSISTENT, use_confirms=False)


def run():
    data = {
        'name': 'jike',
        'age': 18,
        'score': {
            'math': 100,
            'science': 99.5,
            'english': 59
        }
    }

    for _ in range(10000000):
        dispatch(
            'worker_service',
            'to_rubbish',
            json.dumps(data)
        )


if __name__ == "__main__":
    pool = multiprocessing.Pool(processes=8)
    for i in range(100000):
        pool.apply_async(run)
    pool.close()
    pool.join()

很简单，就是先 pool.close()，再 pool.join()