==== how long does a snippet take? ====
<code>
$ python -m timeit -n 3 "from time import sleep; sleep(4)"
3 loops, best of 5: 4 sec per loop
</code>

Ref:-
  * https://realpython.com/python-sleep/#adding-a-python-sleep-call-with-timesleep
  * https://docs.python.org/3/library/timeit.html#timeit-command-line-interface