Converts ESRI Shapefile (.shp) to GeoJSON (.json, see http://geojson.org/)

shp_to_json.py

# Converts ESRI Shapefile (.shp) to GeoJSON (.json, see http://geojson.org/).
# Usage: python shp_to_json.py SHAPEFILE_NAME.shp

import sys, os, json
# python -m pip install pyshp
import shapefile

ifn = sys.argv[1]
assert ifn.lower().endswith('.shp'), ifn

ofn = ifn[:ifn.rfind('.')] + '.json'
assert not os.path.exists(ofn), f'File already exists "{ofn}"!'

r = shapefile.Reader(ifn)

def ToJsonTypes(o):
    if type(o) in [int, float, str, bool, type(None)]:
        return o
    elif type(o) is dict:
        return {ToJsonTypes(k) : ToJsonTypes(v) for k, v in o.items()}
    elif type(o) in [shapefile._Array, list, tuple]:
        return [ToJsonTypes(e) for e in o]
    else:
        assert False, type(o)
    
jd = json.dumps(ToJsonTypes(r.__geo_interface__), indent = 4, ensure_ascii = False).encode('utf-8')

with open(ofn, 'wb') as f:
    f.write(jd)