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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 get_anchor(self):
 """Find anchor variable with highest sum of dependence with the rest."""

        temp = np.empty([self.n_nodes, 2])
        temp[:, 0] = np.arange(self.n_nodes, dtype=int)
        temp[:, 1] = np.sum(abs(self.tau_matrix), 1)
        anchor = int(temp[0, 0])
        return anchor