[Python-Dev] Importance of "async" keyword

Sven R. Kunze srkunze at mail.de
Tue Jun 30 21:39:32 CEST 2015


I have never said I wanted implicit asyncio. Explicit is the Python way 
after all, it served me well and I stick to that.

I like the 'await' syntax to mark suspension points. But the 'async' 
coloring makes no sense to me. It is an implementation details of 
asyncio (IMHO).

 From what I can gather, there are 4 distinct cases I would need to take 
care of. However, I do not wish the team to go through of all of them. 
Additionally, they would even need to think of whether a function 
returns an 'awaitable that returns an int', an 'int' or both depending 
on the input parameters (or due to an implementation error). Maybe, 
somebody even makes a crazy error like returning an 'awaitable that 
returns an awaitable that returns an int'. If somebody likes to 
create/handle this kind of stuff (for whatever reason), using the 
asyncio library and creating crazy wrapper objects would be the way to 
go; not the default syntax.


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