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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 diagonalize(self):
        '''Diagonalize the tensor.'''
        self.eigvals, self.eigvecs = np.linalg.eig(
            (self.tensor.transpose() + self.tensor) / 2.0)
        self.eigvals = np.diag(np.dot(
            np.dot(self.eigvecs.transpose(), self.tensor), self.eigvecs))