numpy.random.RandomState.set_state — NumPy v1.13 Manual (original) (raw)
RandomState. set_state(state)¶
Set the internal state of the generator from a tuple.
For use if one has reason to manually (re-)set the internal state of the “Mersenne Twister”[R195] pseudo-random number generating algorithm.
| Parameters: | state : tuple(str, ndarray of 624 uints, int, int, float) The state tuple has the following items: the string ‘MT19937’, specifying the Mersenne Twister algorithm. a 1-D array of 624 unsigned integers keys. an integer pos. an integer has_gauss. a float cached_gaussian. |
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| Returns: | out : None Returns ‘None’ on success. |
Notes
set_state and get_state are not needed to work with any of the random distributions in NumPy. If the internal state is manually altered, the user should know exactly what he/she is doing.
For backwards compatibility, the form (str, array of 624 uints, int) is also accepted although it is missing some information about the cached Gaussian value: state = ('MT19937', keys, pos).
References
| [R195] | (1, 2) M. Matsumoto and T. Nishimura, “Mersenne Twister: A 623-dimensionally equidistributed uniform pseudorandom number generator,” ACM Trans. on Modeling and Computer Simulation, Vol. 8, No. 1, pp. 3-30, Jan. 1998. |
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