`scipy.stats._multivariate:dirichlet_gen.rvs`

Signature

def rvs(self, alpha, size = 1, random_state = None)

Draw random samples from a Dirichlet distribution.

alpha : array_like: The concentration parameters. The number of entries determines the dimensionality of the distribution.
size : int, optional: Number of samples to draw (default 1).
seed : {None, int, np.random.RandomState, np.random.Generator}, optional: Used for drawing random variates. If seed is None, the ~np.random.RandomState singleton is used. If seed is an int, a new RandomState instance is used, seeded with seed. If seed is already a RandomState or Generator instance, then that object is used. Default is None.

rvs : ndarray or scalar: Random variates of size (size, N), where N is the dimension of the random variable.