How to load GeoJSON files to BigQuery (supports filename arg)

etl_geojson.py

#!/usr/bin/env python3
# See: https://medium.com/@lakshmanok/how-to-load-geojson-files-into-bigquery-gis-9dc009802fb4

import json
import sys

def convert_geojson(input_file_path):
    with open(input_file_path, 'r') as ifp:
        with open('to_load.json', 'w') as ofp:
            features = json.load(ifp)['features']
            schema = None
            for obj in features:
                props = obj['properties']  # a dictionary
                props['geometry'] = json.dumps(obj['geometry'])  # make the geometry a string
                json.dump(props, fp=ofp)
                print('', file=ofp)  # newline
                if schema is None:
                    schema = []
                    for key, value in props.items():
                        if key == 'geometry':
                            schema.append('geometry:GEOGRAPHY')
                        elif isinstance(value, str):
                            schema.append(key)
                        else:
                            schema.append('{}:{}'.format(key,
                                                           'int64' if isinstance(value, int) else 'float64'))
                    schema = ','.join(schema)
            print('Schema: ', schema)

if __name__ == "__main__":
    if len(sys.argv) != 2:
        print("Usage: python script.py input_geojson_file")
    else:
        input_geojson_file = sys.argv[1]
        convert_geojson(input_geojson_file)