> but they can also communicate with the outside state via receiving values (`x = yield y`)
I'm dumbfounded that I have written python for as long as I have without ever encountering this, TIL!
I'm dumbfounded that I have written python for as long as I have without ever encountering this, TIL!
https://lerner.co.il/2020/05/08/making-sense-of-generators-c...
> "The above code looks a bit weird, in that “yield’ is on the right side of an assignment statement. This means that “yield” must be providing a value to the generator. Where is it getting that value from?
Answer: From the “send” method, which can be invoked in place of the “next” function. The “send” method works just like “next”, except that you can pass any Python data structure you want into the generator. And whatever you send to the generator is then assigned to “x”."
Regarding that article specifically I think it could've done better service to 'yield from' had it mentioned recursive generators. One example would be flattening nested lists: have a flatten function that checks if its argument is iterable: if not just yield the thing else yield from flatten for every item in the iterable.
https://twisted.org/documents/21.2.0/api/twisted.internet.de...