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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 neurite_root_section_ids(self):
        '''Get the section IDs of the intitial neurite sections'''
        sec = self.sections
        return [i for i, ss in enumerate(sec)
                if ss.pid > -1 and (sec[ss.pid].ntype == POINT_TYPE.SOMA and
                                    ss.ntype != POINT_TYPE.SOMA)]