human
Complete this python program:
def get_topo_transform(topojson):
assistant
#Here is the Python code you requested.

    """
    """
    def xform(xy):
        (x, y) = xy
        lon = ((topojson['transform']['scale'][0] * x) + topojson['transform']['translate'][0])
        lat = ((topojson['transform']['scale'][1] * y) + topojson['transform']['translate'][1])
        return (lon, lat)
    return xform