Am 19.11.18 um 22:05 schrieb Robert Girault:
Chris Angelico writes:
On Tue, Nov 20, 2018 at 7:31 AM Robert Girault wrote:
Nice. So Python's random.random() does indeed use mt19937. Since it's
been broken for years, why isn't it replaced by something newer like
ChaCha20? Is it due to backw
On 11/19/18 6:49 PM, Robert Girault wrote:
> I think I disagree with your take here. With mt19937, given ANY seed,
> I can eventually predict all the sequence without having to query the
> oracle any further.
Even if that's true, and I use mt19937 inside my program, you don't
[usually|necessari
On Tue, Nov 20, 2018 at 10:51 AM Robert Girault wrote:
> If you're just writing a toy software, even K&R PRNG works just fine.
> If you're writing a weather simulation, I suppose you need real
> random-like properties and still need your generator to be reproducible.
> If you're using random Quick
Dennis Lee Bieber writes:
> On Mon, 19 Nov 2018 19:05:44 -0200, Robert Girault declaimed
> the following:
>
>>I mean the fact that with 624 samples from the generator, you can
>>determine the rest of the sequence completely.
>
> Being able to predict the sequence after a large sampling doe
On Mon, Nov 19, 2018 at 2:12 PM Robert Girault wrote:
>
> Chris Angelico writes:
>
> > On Tue, Nov 20, 2018 at 7:31 AM Robert Girault wrote:
> >> Nice. So Python's random.random() does indeed use mt19937. Since it's
> >> been broken for years, why isn't it replaced by something newer like
> >>
Chris Angelico writes:
> On Tue, Nov 20, 2018 at 7:31 AM Robert Girault wrote:
>> Nice. So Python's random.random() does indeed use mt19937. Since it's
>> been broken for years, why isn't it replaced by something newer like
>> ChaCha20? Is it due to backward compatibility? That would make se
On Tue, Nov 20, 2018 at 7:31 AM Robert Girault wrote:
> Nice. So Python's random.random() does indeed use mt19937. Since it's
> been broken for years, why isn't it replaced by something newer like
> ChaCha20? Is it due to backward compatibility? That would make sense.
What exactly do you mean
Peter Otten <__pete...@web.de> writes:
> Robert Girault wrote:
>
>> Looking at its source code, it seems the PRNG behind random.random() is
>> Mersenne Twister, but I'm not sure. It also seems that random.random()
>> is using /dev/urandom. Can someone help me to read that source code?
>>
>> I'm
Robert Girault wrote:
> Looking at its source code, it seems the PRNG behind random.random() is
> Mersenne Twister, but I'm not sure. It also seems that random.random()
> is using /dev/urandom. Can someone help me to read that source code?
>
> I'm talking about CPython, by the way. I'm reading
