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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_polarization_change(self, convert_to_muC_per_cm2=True, all_in_polar=True):
 """ Get difference between nonpolar and polar same branch polarization. """

        tot = self.get_same_branch_polarization_data(
            convert_to_muC_per_cm2=convert_to_muC_per_cm2, all_in_polar=all_in_polar)
        # reshape to preserve backwards compatibility due to changes
        # when switching from np.matrix to np.array
        return (tot[-1] - tot[0]).reshape((1,  3))