I want to test a functions print output. But even though i have imported pytest it doesnt work

import pytest 
import io

from time import sleep

import sys, os

sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), "..")))
from decorators import get_time, init_logger

init_logger(True)

@get_time
def test_get_run_time():
    sleep(1.5)
    capture = capfd.readouterr()

i searched in the internet and could not find anyone with this error