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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_arrowhead(self, direction, x, y, end):
 """Render individual arrow head. direction (unicode):
 Arrow direction, 'left' or 'right'. x (int):
 X-coordinate of arrow start point. y (int):
 Y-coordinate of arrow start and end point. end (int):
 X-coordinate of arrow end point. RETURNS (unicode):
 Definition of the arrow head path ('d' attribute). """

        if direction == "left":
            pos1, pos2, pos3 = (x, x - self.arrow_width + 2, x + self.arrow_width - 2)
        else:
            pos1, pos2, pos3 = (
                end,
                end + self.arrow_width - 2,
                end - self.arrow_width + 2,
            )
        arrowhead = (
            pos1,
            y + 2,
            pos2,
            y - self.arrow_width,
            pos3,
            y - self.arrow_width,
        )
        return "M{},{} L{},{} {},{}".format(*arrowhead)