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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 scale(self):
 """ What is a representitive number that reflects the magnitude of the world holding the paths, for numerical comparisons. Returns scale : float Approximate size of the world holding this path """

        # use vertices peak-peak rather than exact extents
        scale = float((self.vertices.ptp(axis=0) ** 2).sum() ** .5)
        return scale