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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 on_touch_move(self, touch):
 """If I'm being dragged, move so as to be always positioned the same relative to the touch. """

        if not self.dragging:
            touch.ungrab(self)
            return
        self.pos = (
            touch.x - self.collide_x,
            touch.y - self.collide_y
        )