from shapely import MultiPolygon, Polygon


def convert_outage_geometry(event) -> MultiPolygon:
    assert event["polygons"]["type"] == "polygon"
    assert event["polygons"]["hasZ"] is False
    assert event["polygons"]["hasM"] is False
    polygon_list = []
    for ring in event["polygons"]["rings"]:
        polygon_list.append(Polygon(ring))
    return MultiPolygon(polygon_list)