mdtraj.utils.check_random_state

mdtraj.utils.check_random_state(seed)

Turn seed into a np.random.RandomState instance

Parameters:

seed : {None, int, RandomState}

Seed for a random number generator

Returns:

randomstate : RandomState

If seed is None, return the RandomState singleton used by np.random. If seed is an int, return a new RandomState instance seeded with seed. If seed is already a RandomState instance, return it. Otherwise raise ValueError.