fib_proc.py

from time import time

def fib(x):
    if x in (0, 1):
        return x

    fib1 = 0
    fib2 = 1
    current = 1

    for i in range(2, x + 1):
        current = fib1 + fib2
        fib1 = fib2
        fib2 = current

    return current


start = time()
last_result = 0
for _ in range(10000):
    for i in range(1, 41):
        last_result = fib(i)

print(f"Time taken: {round((time() - start) * 1000)}ms")
print(f"Last result: {last_result}")