Remove third and greater coordinates from geojson

geojson_remove_z_values.py

#!/usr/bin/env python

import json, sys

def _stripZ(coordinates):
    if isinstance(coordinates, list) and not any([isinstance(el, list) for el in coordinates]) and len(coordinates) > 2:
        return coordinates[:2]
    else:
        return [_stripZ(el) for el in coordinates]
        
def removeZCoordinatesFromGeoJSON(gj):
    if 'coordinates' in gj:
        gj['coordinates'] = _stripZ(gj['coordinates'])
    elif 'geometry' in gj:
        removeZCoordinatesFromGeoJSON(gj['geometry'])
    elif 'geometries' in gj:
        for geom in gj['geometries']:
            removeZCoordinatesFromGeoJSON(geom)
    elif 'features' in gj:
        for feature in gj['features']:
            removeZCoordinatesFromGeoJSON(feature)

if __name__ == '__main__':
    gj = json.load(sys.stdin)
    removeZCoordinatesFromGeoJSON(gj)
    json.dump(gj, sys.stdout)