<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def same_branch_splines(self, convert_to_muC_per_cm2=True, all_in_polar=True):
 """ Fit splines to same branch polarization. This is used to assess any jumps in the same branch polarizaiton. """

        from scipy.interpolate import UnivariateSpline
        tot = self.get_same_branch_polarization_data(
            convert_to_muC_per_cm2=convert_to_muC_per_cm2, all_in_polar=all_in_polar)
        L = tot.shape[0]
        try:
            sp_a = UnivariateSpline(range(L), tot[:, 0].ravel())
        except:
            sp_a = None
        try:
            sp_b = UnivariateSpline(range(L), tot[:, 1].ravel())
        except:
            sp_b = None
        try:
            sp_c = UnivariateSpline(range(L), tot[:, 2].ravel())
        except:
            sp_c = None
        return sp_a, sp_b, sp_c