Chris Angelico <ros...@gmail.com> writes: > On Wed, 27 Jul 2022 at 01:06, Cecil Westerhof via Python-list > <python-list@python.org> wrote: >> >> I need to get a random integer. At first I tried it with: >> from secrets import randbelow >> index = randbelow(len(to_try)) >> >> This works perfectly, but it took some time. So I thought I try: >> from random import SystemRandom >> index = SystemRandom().randint(0, len(to_try) - 1) >> >> A first indication is that the second version would take about two >> times as much time as the first. Is there a reason for this, or should >> this not be happening? >> > > You're setting up a brand new SystemRandom instance just for a single > random number. For a fairer comparison, set up the instance, then > generate far more than just a single number, and see how that goes.
Thanks. I thought I did something wrong and I did. I will try to implement like you said and look what the result will be. (And share it.) (As I understand it both do more, or less the same and should have comparable performance.) -- Cecil Westerhof Senior Software Engineer LinkedIn: http://www.linkedin.com/in/cecilwesterhof -- https://mail.python.org/mailman/listinfo/python-list
