get_random_state¶

gammapy.utils.random.get_random_state(init)[source]¶

Get a numpy.random.RandomState instance.

The purpose of this utility function is to have a flexible way to initialise a RandomState instance, a.k.a. a random number generator (rng).

See Random numbers for usage examples and further information.

Parameters

init{int, ‘random-seed’, ‘global-rng’, RandomState}

Available options to initialise the RandomState object:

int – new RandomState instance seeded with this integer (calls RandomState with seed=init)
'random-seed' – new RandomState instance seeded in a random way (calls RandomState with seed=None)
'global-rng', return the RandomState singleton used by numpy.random.
RandomState – do nothing, return the input.

Returns