[Python-ideas] About adding a new iteratormethodcalled "shuffled"
tim.peters at gmail.com
Thu Mar 26 18:55:22 CET 2009
> Is it or is it not broken? That's all I want to know.
Then you first need to define what "broken" means to you. Anything
short of a source of /true/ random numbers is "broken" for /some/
Python's current generator is not broken for any purposes I care
about, so my answer to your question is "no" -- but only if I ask your
question of myself ;-)
> Better would be a PRNG with a much larger period..
Not really. A larger period is necessary but not sufficient /if/
you're concerned about generating all permutations of bigger lists
with equal probability -- see the old thread someone else pointed to
for more info on that. The Mersenne Twister's provably superb
"high-dimensional equidistribution" properties are far more important
than its long period in this respect (the former is sufficient; the
latter is merely necessary).
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