def set_row_min_height(self, y: int, min_height: int):
        """Sets a minimum height for blocks in the row with coordinate y."""
        if y < 0:
            raise IndexError('y < 0')
        self._min_heights[y] = min_height
def set_row_min_height ( self , y : int , min_height : int ) : if y < 0 : raise IndexError ( 'y < 0' ) self . _min_heights [ y ] = min_height
Sets a minimum height for blocks in the row with coordinate y.