Function timer

code/basics/timer_decorator.py:33–39

(Fn)

import time

def timer(Fn):
    def inner(*args, **kwargs):
        Ts = time.time()
        Fn(*args, **kwargs)
        Te = time.time()
        print(f'dT = {Te-Ts:.3f} seconds')
    return inner

@timer
def sleeper(sec):