Coroutines are extremely powerful constructs that are often confused with generators. Many authors inappropriately describe coroutines as "generators with a bit of extra syntax." This is an easy mistake to make, as, way back in Python 2.5, when coroutines were introduced, they were presented as "we added a send method to the generator syntax." This is further complicated by the fact that when you create a coroutine in Python, the object returned is a generator. The difference is actually a lot more nuanced and will make more sense after you've seen a few examples.


While coroutines in Python are currently tightly coupled to the generator syntax, they are only superficially related to the iterator protocol we have been discussing. ...

Get Python: Journey from Novice to Expert now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.