import asyncio
import logging
import sys


stdout_logger = logging.getLogger()
stdout_logger.setLevel(logging.DEBUG)
log_handler = logging.StreamHandler(stream=sys.stdout)
log_handler.setFormatter(
    logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s')
)
stdout_logger.addHandler(log_handler)


loop = asyncio.ProactorEventLoop()
asyncio.set_event_loop(loop)

stdout_logger.info('Starting')
loop.run_until_complete(asyncio.sleep(1.0))
stdout_logger.info('Sleep done')
loop.close()  # <-- offending log output comes from here
stdout_logger.info('Loop closed')