JSON key ordering in objects

ordered_json_object.py

import json


class OrderedObjectDecoder(json.JSONDecoder):
    def __init__(self, *args, **kwargs):
        json.JSONDecoder.__init__(self, object_hook=self.object_hook, *args, **kwargs)

    def object_hook(self, obj):
        return {key: value for key, value in sorted(obj.items())}


# Fill input.json with your JSON input and run:
# python3 reorder_payload.py
# (or run in your IDE)
#
# Output will save to output.json.
if __name__ == "__main__":
    with open("input.json") as f:
        ordered_json = json.load(f, cls=OrderedObjectDecoder)

    with open("output.json", "w") as f:
        json.dump(ordered_json, f, indent=4)