Handle (Geo-)JSON with python

parse.py

import json

with open('path/to/json/file') as data_file:
    # a python dictionary, similar to a JS object
    data = json.load(data_file)

    # iterate over features, 'features' is a python list
    for feature in data['features']:
        # access everything via brackets, no dot notation
        properties = feature['properties']
        
    #...
        
    # construct a new geoJson
    geoJson = {
        'type': 'FeatureCollection',
        'features': []
    }
    
    # write geojson to file
    with open('target/file', 'w') as outfile:
        json.dump(geoJson, outfile)