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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 center(self):
        '''
        Center point of the ellipse, equidistant from foci, Point class.\n
        Defaults to the origin.
        '''
        try:
            return self._center
        except AttributeError:
            pass
        self._center = Point()
        return self._center