code: def Gamma(k, theta, tag=None):
      
      assert (
          k > 0 and theta > 0
      ), 'Gamma "k" and "theta" parameters must be greater than zero'
      return uv(ss.gamma(k, scale=theta), tag=tag)
docs: A Gamma random variate
      
      Parameters
      ----------
      k : scalar
          The shape parameter (must be positive and non-zero)
      theta : scalar
          The scale parameter (must be positive and non-zero)