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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 ecef2enu(x: float, y: float, z: float, lat0: float, lon0: float, h0: float, ell: Ellipsoid = None, deg: bool = True) -> Tuple[float, float, float]: """ from observer to target, ECEF => ENU Parameters x : float or numpy.ndarray of float target x ECEF coordinate (meters) y : float or numpy.ndarray of float target y ECEF coordinate (meters) z : float or numpy.ndarray of float target z ECEF coordinate (meters) lat0 : float Observer geodetic latitude lon0 : float Observer geodetic longitude h0 : float observer altitude above geodetic ellipsoid (meters) ell : Ellipsoid, optional reference ellipsoid deg : bool, optional degrees input/output (False: radians in/out) Returns ------- East : float or numpy.ndarray of float target east ENU coordinate (meters) North : float or numpy.ndarray of float target north ENU coordinate (meters) Up : float or numpy.ndarray of float target up ENU coordinate (meters) """

    x0, y0, z0 = geodetic2ecef(lat0, lon0, h0, ell, deg=deg)

    return uvw2enu(x - x0, y - y0, z - z0, lat0, lon0, deg=deg)