ray_like
    The shape parameter(s) for the distribution (see docstring of the
    instance object for more information).
loc : array_like, optional
    Location parameter (default=0).
size : int or tuple of ints, optional
    Defining number of random variates (Default is 1). Note that `size`
    has to be given as keyword, not as positional argument.
random_state : {None, int, `numpy.random.Generator`,
                `numpy.random.RandomState`}, optional

    If `random_state` is None (or `np.random`), the
    `numpy.random.RandomState` singleton is used.
    If `random_state` is an int, a new ``RandomState`` instance is
    used, seeded with `random_state`.
    If `random_state` is already a ``Generator`` or ``RandomState``
    instance, that instance is used.

Returns
-------
rvs : ndarray or scalar
    Random variates of given `size`.

Trs