How to extend/concatenate two iterators in Python [duplicate]

Answer 1

you can use the chain() function provided by the itertools

itertools.chain()

Answer 2

Use itertools.chain:

from itertools import chain
y_iter = chain(l1, l2)

It yields all the items from l1 and then all the items from l2. Effectively concatenating the sequence of yielded items. In the process it consumes both.