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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 set_accuracy(self, acc):
 """ Sets the accuracy order of the finite difference scheme. If the FinDiff object is not a raw partial derivative but a composition of derivatives the accuracy order will be propagated to the child operators. """

        self.acc = acc
        if self.child:
            self.child.set_accuracy(acc)