Christopher Barker <python...@gmail.com> ezt írta (időpont: 2019. szept. 14., Szo, 21:58):
> > While I was reading the documentation of asyn generators, >> > which shows the following example: >> > >> > async def ticker(delay, to): >> > """Yield numbers from 0 to *to* every *delay* seconds.""" >> > for i in range(to): >> > yield i >> > await asyncio.sleep(delay) >> > >> > It's came to my mind that it could could be simpler. >> > >> > We could use just >> > async yield >> > and all the other stuff could be done in the background. >> > > Which all other stuff? Are you saying that you wouldn't need to use "async > def", if there was an "async yield" in the function? > > But that doesn't solve many problems, because you can create async > functions that don't have a yield in them -- ie, they are async, but not > generator functions, the two are orthogonal. > > -CHB > > -- > Christopher Barker, PhD > > Python Language Consulting > - Teaching > - Scientific Software Development > - Desktop GUI and Web Development > - wxPython, numpy, scipy, Cython > Yes, that is why I wrote simpler async generator: With this syntax the use / programmer do not have to write async def, nor await, because after the yield the await should come automatically. I got my value, then do my job with the value, in the background the next value is prepared, and next time, when I need the next value, it will be prepared, or there will be a wait until it is prepared. So async yield would mean: give me the value, and start creating the next one, I will come back. __george__
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