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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 copy(self):
 """ Creates a copy of the object """

        variance = self.variance.copy() if self.variance is not None else None
        headers = self.headers.copy() if self.headers is not None else None
        return self.__class__(self.disp.copy(), self.flux.copy(),
            variance=variance, headers=headers)