On Thu, 10 Sep 2009 02:53:33 -0700 (PDT), sturlamolden
wrote:
: On 10 Sep, 10:50, Hans Georg Schaathun wrote:
:
: > Can anyone recommend a PRNG which supported multiple instances
: > with independent states, and that also can return numpy.array (or
: > something similar) efficiently?
:
: nu
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Aloha!
Hans Georg Schaathun wrote:
> Can anyone recommend a PRNG which supported multiple instances
> with independent states, and that also can return numpy.array (or
> something similar) efficiently?
>
> The distribution is currently Gaussian.
Do
On 10 Sep, 10:50, Hans Georg Schaathun wrote:
> Can anyone recommend a PRNG which supported multiple instances
> with independent states, and that also can return numpy.array (or
> something similar) efficiently?
numpy.random.RandomState
;-)
S.M.
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2009/9/10 Hans Georg Schaathun :
> I wonder if someone knows of an API with the features I need...
> random.Random and numpy.random each have only half of it...
>
> My application includes an object to hold a pseudo-randomly
> generated matrix too large to be kept in memory. Hence I
> try to store
I wonder if someone knows of an API with the features I need...
random.Random and numpy.random each have only half of it...
My application includes an object to hold a pseudo-randomly
generated matrix too large to be kept in memory. Hence I
try to store only the seed, and generate the numbers on
truerandom.py is a Python module that generates true random numbers
obtained from www.random.org.
Use with the form: mylist=truerandom.getnum(min,max,amount)
mylist will be a list containing the true random numbers.
If for some reason the numbers cannot be generated, the list will
contain -1.
Y
"ahmet nurlu" wrote:
> It gives error:
> Traceback (most recent call last):
>File "random.py", line 2, in ?
> from pylab import *
>File "/usr/lib/python2.4/site-packages/pylab.py", line 1, in ?
> from matplotlib.pylab import *
>File "/usr/lib/python2.4/site-packages/mat
Hi, I wrote a random walk program which you will find below. When I run it from the terminal, it gives error which I am not able to figure out what could be wrong. From the bash shell, I give a command >python2.4 random.py It gives error: --
The Helmbolds wrote:
>
> Python bases its random number generators on the Mersenne Twister.
>
> Do Numeric and SciPy also base their random number generators on the
> Mersenne Twister? If not, what do they use?
Numeric, numarray and scipy 0.3 use RANLIB.
http://www.stat.umn.edu/HELP/ranlib-d
Python bases its random number generators on the Mersenne Twister. Do Numeric and SciPy also base their random number generators on the Mersenne Twister? If not, what do they use?--
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Raymond Hettinger wrote:
> Mike Brown wrote:
> > I have questions about thread safety in the 'random' module.
> >
> > When using the random.Random class (be it Mersenne Twister or Wichmann-Hill
> > based), is it sufficiently thread-safe (preserving entropy and guarding
> > against attack) to just h
> > Thread-safety has nothing to do with preserving entropy or guarding
> > against attack. All of the entropy in an MT sequence is contained in
> > the seed (upto 624 bytes) and that entropy is preserved through all
> > subsequent calls.
>
> I think the concern is that there can be a thread switc
"Raymond Hettinger" <[EMAIL PROTECTED]> writes:
> Thread-safety has nothing to do with preserving entropy or guarding
> against attack. All of the entropy in an MT sequence is contained in
> the seed (upto 624 bytes) and that entropy is preserved through all
> subsequent calls.
I think the concer
Mike Brown wrote:
> I have questions about thread safety in the 'random' module.
>
> When using the random.Random class (be it Mersenne Twister or Wichmann-Hill
> based), is it sufficiently thread-safe (preserving entropy and guarding
> against attack) to just have each thread work with its own ran
I have questions about thread safety in the 'random' module.
When using the random.Random class (be it Mersenne Twister or Wichmann-Hill
based), is it sufficiently thread-safe (preserving entropy and guarding
against attack) to just have each thread work with its own random.Random
instance? Or
Fredrik Lundh wrote:
>>How to generate a random number in Python. Is there any build in
>>function I can call?
>
>
> >>> import random
> >>> help(random)
If you need crypto-quality randomness:
>>> import os
>>> help(os.urandom)
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--Bryan
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import random
print random.randint(1,20)
#prints random integer from 1 to 20
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> How to generate a random number in Python. Is there any build in
> function I can call?
>>> import random
>>> help(random)
also see:
http://docs.python.org/lib/module-random.html
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How to generate a random number in Python. Is there any build in
function I can call?
Thanks
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