random.SystemRandom().randint() inefficient
Cecil Westerhof
Cecil at decebal.nl
Wed Jul 27 04:45:47 EDT 2022
Barry <barry at barrys-emacs.org> writes:
>> On 26 Jul 2022, at 16:07, Cecil Westerhof via Python-list <python-list at 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?
>
> What is the OS that you are running on and its version?
> If it’s linux what is the kernel version?
> What version of python and where from?
That is always good information of-course.
Debian 11.3
5.10.0-13-amd64
3.9.2
What do you mean with where the python version is from?
--
Cecil Westerhof
Senior Software Engineer
LinkedIn: http://www.linkedin.com/in/cecilwesterhof
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