13. Interlude : Generators are not Coroutines

David Beazley, minute 30:42 of Curious Course on Coroutines and Concurrency [9]

“Coroutines evolved from generators.From coroutines a new syntax gave birth to async and await keywords and that is the reason we have taken a look to all that here so far.”

But as David Beazley quoted in above references [9], generators are not coroutines.

Below Table shows the differences.

Table 2 Differences between GENERATORS and COROUTINES

GENERATORS	COROUTINES
Produce data	Consume data
Related to iteration	Nothing to do with iteration,even when producing values and Related to async behavior

Python’s coroutines are special functions that give up control to the caller without losing their state, Dough Hellman [13]

They allow to return information from a pipe of multiple coroutines using “yield from”

They consume data and evolved from generators