random.SystemRandom().randint() inefficient

[Dennis Lee Bieber]

On Tue, 26 Jul 2022 23:47:59 +0200, Cecil Westerhof <Cecil at decebal.nl>
declaimed the following:


>The new code:
>    from random  import SystemRandom
>    system_random   = SystemRandom()
>    index = system_random.randint(0, len(to_try) - 1)
>
>The first two statements are executed once.
>The last statement I think about 75 * 10 ** 6.
>
>So it seems that my first idea of using randbelow was the correct one.
>But if anyone could explain why SystemRandom is so much more
>expensive, I would be interested to know it.
>(Or am I still doing something wrong?)

	What happens with

		system_randint = SystemRandom().randint	#no parens

		index = system_randint(...)

which may remove the method lookup from the repetition.


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	Wulfraed                 Dennis Lee Bieber         AF6VN
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