On 23 July 2016 at 16:06, Ian Kelly <ian.g.ke...@gmail.com> wrote: > On Fri, Jul 22, 2016 at 6:27 PM, Marco S. via Python-list > <python-list@python.org> wrote: >> Furthermore I have a question about exceptions in asyncio. If I >> understand well how it works, tasks exceptions can be caught only if >> you wait for task completion, with yield from, await or >> loop.run_until_complete(future). But in this case the coroutine blocks >> the execution of the program until it returns. On the contrary you can >> execute the coroutine inside an asyncio task and it will be >> non-blocking, but in this case exceptions can't be caught in a try >> statement. > > If you don't want to block the current function on the task, then spin > off another task to do the error handling. Instead of this: > > async def do_something(): > try: > await do_something_else() > except DidNothingError as e: > handle_error(e) > ... > > Consider this: > > async def do_something(): > get_event_loop().create_task(await_and_handle(do_something_else())) > ... > > async def await_and_handle(awaitable): > try: > await awaitable > except DidNothingError as e: > handle_error(e)
Really good suggestion, thank you. -- https://mail.python.org/mailman/listinfo/python-list
