def draw(self, n=1):
        """

        :return:
        """
        p = np.random.uniform(0, 1, n)
        return self._cdf_inv_func(p)
def draw ( self , n = 1 ) : p = np . random . uniform ( 0 , 1 , n ) return self . _cdf_inv_func ( p )
:return: