should I transfer 'iterators' between functions?

[seaspeak at gmail.com]

take the following as an example, which could work well.
But my concern is, will list 'l' be deconstructed after function return? and then iterator point to nowhere?

def test():
    l = [1, 2, 3, 4, 5, 6, 7, 8]
    return iter(l)
def main():
    for i in test():
        print(i)