random.SystemRandom().randint() inefficient

[Cecil Westerhof]

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