On 2015-06-26 1:40 PM, Ethan Furman wrote:
On 06/26/2015 08:47 AM, Steve Dower wrote:
On 06/26/2015 06:48 AM, Sven R. Kunze wrote:
def business(): return complex_calc(5)
def business_new() return await complex_calc(10)
Assuming "async def business_new" (to avoid the syntax error), there's no difference between those functions or the one they're calling:
- "complex_calc" returns an awaitable object that, after you've
awaited it, will result in an int.
- "business" returns the return value of "complex_calc", which is an
awaitable object that, after you've awaited it, will result in an int.
- "business_new" returns an awaitable object that, after you've
awaited it, will result in an int.
In all three of these cases, the result is the same. The fact that the awaitable object returned from any of them is implemented by a coroutine isn't important (in the same way that an iterable object may be implemented by a generator, but it's really irrelevant).
What? Shouldn't 'business_new' return the int? It did await, after all.
"business_new" should be defined with an 'async' keyword, that's where all the confusion came from:
async def business_new(): return await complex_calc(10)
Now, "business_new()" returns a coroutine (which will resolve to the result of "complex_calc" awaitable), "await business_new()" will return an int.
Yury