Dear all, a new release of the decorator module is out. For the first time we support decorating Python 3.5 coroutines. For instance, this is an example of how to implement a tracing decorator called log_start_stop that you can use for debugging: import time import logging from asyncio import get_event_loop, sleep, wait from decorator import decorator @decorator async def log_start_stop(coro, *args, **kwargs): logging.info('Starting %s%s', coro.__name__, args) t0 = time.time() await coro(*args, **kwargs) dt = time.time() - t0 logging.info('Ending %s%s after %d seconds', coro.__name__, args, dt) @log_start_stop async def make_task(n): for i in range(n): await sleep(1) if __name__ == '__main__': logging.basicConfig(level=logging.INFO) tasks = [make_task(3), make_task(2), make_task(1)] get_event_loop().run_until_complete(wait(tasks)) You will get an output like this: INFO:root:Starting make_task(1,) INFO:root:Starting make_task(3,) INFO:root:Starting make_task(2,) INFO:root:Ending make_task(1,) after 1 seconds INFO:root:Ending make_task(2,) after 2 seconds INFO:root:Ending make_task(3,) after 3 seconds Also, for the first time the documentation is hosted on readthedocs.org. Here are the relevant links: Download: https://pypi.python.org/pypi/decorator/4.1.1 Project: https://github.com/micheles/decorator/ Docs: http://decorator.readthedocs.io/en/latest/index.html