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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 pole_from_endpoints(coord1, coord2):
 """Compute the pole from a great circle that connects the two specified coordinates. This assumes a right-handed rule from coord1 to coord2: the pole is the north pole under that assumption. Parameters coord1 : `~astropy.coordinates.SkyCoord` Coordinate of one point on a great circle. coord2 : `~astropy.coordinates.SkyCoord` Coordinate of the other point on a great circle. Returns ------- pole : `~astropy.coordinates.SkyCoord` The coordinates of the pole. """

    c1 = coord1.cartesian / coord1.cartesian.norm()

    coord2 = coord2.transform_to(coord1.frame)
    c2 = coord2.cartesian / coord2.cartesian.norm()

    pole = c1.cross(c2)
    pole = pole / pole.norm()
    return coord1.frame.realize_frame(pole)