A simple python decorator to measure function execution time

example.py

# Example usage
from time import sleep

@timer(repeat=10)
def my_function():
    sleep(1)
    return True

timer.py

from time import perf_counter
import functools


def timer(func=None, repeat: int = 1000000):
    def _decorate(function):

        @functools.wraps(function)
        def wrapped_func(*args, **kwargs):
            t0 = perf_counter()
            for _ in range(repeat):
                function(*args, **kwargs)
            t1 = perf_counter()

            t = 1000 * (t1 - t0)/repeat
            print('%s executed in %fms' % (function.__name__, t))
            return function(*args, **kwargs)

        return wrapped_func

    if func:
        return _decorate(func)
    return _decorate