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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 expanded_by(self, n):
 """Return a rectangle with extended borders. Create a new rectangle that is wider and taller than the immediate one. All sides are extended by "n" points. """

        return Rect(self.left - n, self.top - n, self.right + n, self.bottom + n)