how to send a json of yield list

[meInvent bbird]

succeed to run,

is it the yield return the whole list 2000 * 2000 * 2000 items?

as i know that yield is return [1,1,1] etc one by one once it get

if it return 2000*2000*2000 items, why?

i have to add a queue get this yield in order to succeed

but i do not understand the situation when
using queue and yield at the same time

will the speed same as the situation that no yield?

while True:
    #time.sleep(1)
    if q.qsize() > 0:
        print("here1")
        item = q.get()
        print("here2")
        #item = getcombinations()
        sock.send(json.dumps(item))