def is_empty(vertical_pos, horizontal_pos, grid):
    """Checks whether the current cell is empty

    :param vertical_pos: Vertical position of the man, in int
    :param horizontal_pos: Horizontal position of the man, in int
    :param grid: A 2-dimensional 7x7 list

    :return:
        True, if it is empty
        False, if it is not empty
    """

    return grid[vertical_pos][horizontal_pos] == " "