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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_segment(neuron, section_id, segment_id):
    '''Get a segment given a section and segment id

    Returns:
        array of two [x, y, z, r] points defining segment
    '''
    sec = neuron.sections[section_id]
    return sec.points[segment_id:segment_id + 2][:, COLS.XYZR]