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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 vectors_between_pts(pts=[]):
    '''Return vectors between points on N dimensions.
Last vector is the path between the first and last point, creating a loop.
    '''
    assert isinstance(pts, list) and len(pts) > 0
    l_pts = len(pts)
    l_pt_prev = None
    for pt in pts:
        assert isinstance(pt, tuple)
        l_pt = len(pt)
        assert l_pt > 1
        for i in pt:
            assert isinstance(i, float)
        if l_pt_prev is not None:
            assert l_pt == l_pt_prev
        l_pt_prev = l_pt

    return [tuple([pts[(i+1) % l_pts][j] - pts[i][j] for j in range(l_pt)]) \
            for i in range(l_pts)]