Python run time benchmarking utility

bench.py

import time
from typing import Callable, Set, Iterator, List

def bench(fn: Callable, warm_up_iterations: int = 10, test_iterations: int = 100, verbose: bool = False):
    for i in range(warm_up_iterations):
        start_time = time.time()
        fn()
        end_time = time.time() - start_time
        if verbose:
            print(f"warm up #{i} [{end_time}sec]")

    times: List[float] = []
    for i in range(test_iterations):
        start_time = time.time()
        fn()
        end_time = time.time() - start_time
        times.append(end_time)
        if verbose:
            print(f"test #{i} [{end_time}sec]")

    print(float(sum(times)) / len(times))
    return times