Sample Result on Core i7-9750H CPU @ 2.60GHz - Python 3.8.3 under Linux
[+] Number of Iterations: 994000000
[+] Test Number: 1
[->] Time without Function: 24018606802ns
[->] Time with a Function: 57466823134ns
[+] Test Number: 2
[->] Time without Function: 23008269725ns
[->] Time with a Function: 56894241793ns
[+] Test Number: 3
[->] Time without Function: 23165251539ns
[->] Time with a Function: 56563459460ns