python - Return or yield from a function that calls a generator?

I have a generator generator and also a convenience method to it - generate_all.

def generator(some_list):

  for i in some_list:
    yield do_something(i)

def generate_all():
  some_list = get_the_list()
  return generator(some_list) # <-- Is this supposed to be return or yield?

Should generate_all return or yield? I want the users of both methods to use it the same, i.e.

for x in generate_all()

should be equal to

some_list = get_the_list()
for x in generate(some_list)