code: def BetaPrime(alpha, beta, tag=None):
      
      assert (
          alpha > 0 and beta > 0
      ), 'BetaPrime "alpha" and "beta" parameters must be greater than zero'
      x = Beta(alpha, beta, tag)
      return x / (1 - x)
docs: A BetaPrime random variate
      
      Parameters
      ----------
      alpha : scalar
          The first shape parameter
      beta : scalar
          The second shape parameter