import jsonpickle
from enum import Enum


class Bar(Enum):
    A = 1
    B = 2


class Foo:
    def __init__(self):
        self.hello = 'hello'
        self.bar = [Bar.A, Bar.B]


class Handler(jsonpickle.handlers.BaseHandler):

    def flatten(self, obj, data):  # data contains {}
        print(obj)

        ### How should I handle the enum? ###

        return data


jsonpickle.handlers.registry.register(Bar, Handler)


def main():
    fizbuz = Foo()
    encoded = jsonpickle.encode(fizbuz)
    print(encoded)


if __name__ == '__main__':
    main()