We need either both `asyncio.switch()` and `time.switch()` (`threading.switch()` maybe) or none of them.
https://docs.python.org/3/library/asyncio-task.html#sleeping has the explicit sentence: sleep() always suspends the current task, allowing other tasks to run. On Fri, Jun 14, 2019 at 5:06 PM Joao S. O. Bueno <jsbu...@python.org.br> wrote: > > > it is very well known feature. > > Or is it? Just because you do know it, it does not mean it is universal - > This is not documented on time.sleep, threading.Thread, or asyncio.sleep > anyway. > > I've never worked much on explicitly multi-threaded code, but in 15+ years > this is a pattern I had not seem up to today. > The original writer of this Thread, Nikita, also does not seem > to have found `asyncio.sleep(0)` in less than 10 minutes looking > for what he needed. > > It allows for "explcit is better than implicit", and really > asserts the intention of the code writer, and have > a low cost to implement in the stdlib. > > > > And it is semantically more correct at the cost of maybe 3loc on the stdlib. > > On Fri, 14 Jun 2019 at 10:57, Andrew Svetlov <andrew.svet...@gmail.com> wrote: >> >> time.sleep(0) is used for a thread context switch, it is very well >> known feature. >> await asyncio.sleep(0) does the same for async tasks. >> Why do we need another API? >> >> On Fri, Jun 14, 2019 at 4:43 PM Joao S. O. Bueno <jsbu...@python.org.br> >> wrote: >> > >> > Regardless of a mechanism to counting time, and etc... >> > >> > Maybe a plain and simple adition to asincio would be a >> > context-switching call that does what `asyncio.sleep(0)` does today? >> > >> > It would feel better to write something like >> > `await asyncio.switch()` than an arbitrary `sleep`. >> > >> > On Fri, 14 Jun 2019 at 10:27, Nikita Melentev <multisosnoo...@gmail.com> >> > wrote: >> >> >> >> Fortunately, asyncio provide this good universal default: 100ms, when >> >> WARING appears. Nested loops can be solved with context manager, which >> >> will share `last_context_switch_time` between loops. But main thing here >> >> is that this is strictly optional, and when someone will use this thing >> >> he will know what it is and why he need this. >> >> _______________________________________________ >> >> Python-ideas mailing list -- python-ideas@python.org >> >> To unsubscribe send an email to python-ideas-le...@python.org >> >> https://mail.python.org/mailman3/lists/python-ideas.python.org/ >> >> Message archived at >> >> https://mail.python.org/archives/list/python-ideas@python.org/message/UT5LEWS4XX5IJ64AMMYKJVG2BNYZXYQY/ >> >> Code of Conduct: http://python.org/psf/codeofconduct/ >> > >> > _______________________________________________ >> > Python-ideas mailing list -- python-ideas@python.org >> > To unsubscribe send an email to python-ideas-le...@python.org >> > https://mail.python.org/mailman3/lists/python-ideas.python.org/ >> > Message archived at >> > https://mail.python.org/archives/list/python-ideas@python.org/message/4ZTLXBAQPFYQNITNB3RLRCW5D2QXKGBI/ >> > Code of Conduct: http://python.org/psf/codeofconduct/ >> >> >> >> -- >> Thanks, >> Andrew Svetlov -- Thanks, Andrew Svetlov _______________________________________________ Python-ideas mailing list -- python-ideas@python.org To unsubscribe send an email to python-ideas-le...@python.org https://mail.python.org/mailman3/lists/python-ideas.python.org/ Message archived at https://mail.python.org/archives/list/python-ideas@python.org/message/DZCOVAIV7AJMZK6UGWQOW7UHPW527YUQ/ Code of Conduct: http://python.org/psf/codeofconduct/
