what does yield as assignment do? myVar = (yield)

Question

I\'m familiar with yield to return a value thanks mostly to this question

but what does yield do when it is on the right side of an assignment?

@cor         


        

Answer 1

• yield returns a stream of data as per the logic defined within the generator function.
• However, send(val) is a way to pass a desired value from outside the generator function.

p.next() doesn't work in python3, next(p) works (built-in) for both python 2,3

p.next() doesn't work with python 3, gives the following error,however it still works in python 2.

Error: 'generator' object has no attribute 'next'

Here's a demonstration:

def fun(li):
  if len(li):
    val = yield len(li)
    print(val)
    yield None
    

g = fun([1,2,3,4,5,6])
next(g) # len(li) i.e. 6 is assigned to val
g.send(8) #  8 is assigned to val