Why repeat function didn't work?

Question

I'm new to Python. Can anyone explain why the repeat function doesn't do anything here?

from itertools import repeat

def f():
    print([5,8,9])

repeat(f(),3)

Answer 1

repeat is a generator function. When you call it, the function does not start executing. Instead, a generator object is initialized and returned.

To obtain the items, you need to iterate over the generator object:

for x in repeat(f(), 3):
    print(x)

Or:

items = list(repeat(f(), 3))