def __init__(self, dim_x, dim_y, buffer_size=200):
        """
            :arg dim_x:  the dimension of the input vectors
            :arg dim_y:  the dimension of the output vectors
        """
        
        self.buffer_size = buffer_size
        self.buffer = Dataset(dim_x, dim_y)
        
        Dataset.__init__(self, dim_x, dim_y)
def __init__ ( self , dim_x , dim_y , buffer_size = 200 ) : self . buffer_size = buffer_size self . buffer = Dataset ( dim_x , dim_y ) Dataset . __init__ ( self , dim_x , dim_y )
:arg dim_x:  the dimension of the input vectors
            :arg dim_y:  the dimension of the output vectors