Json encoding decoding

import json
import jsonpickle


class FileManager:

    def __init__(self):
        pass

    def json_dump_object(self, encoded_object):  # JSONpickle object -> dump to *.json
        with open("ListOfUsers.json", "w") as file:
            json.dump(encoded_object, file)
        print("JSON list has been exported")

    def json_load_object(self):  # load *.json -> JSONpickle object
        with open("ListOfUsers.json", "r") as file:
            object_loaded = json.load(file)
        print("JSON list has been imported")
        return object_loaded

    def object_to_jsonpickle(self, obj):  # encoding Python object -> JSONpickle object
        encoded_obj = jsonpickle.encode(obj)
        return encoded_obj

    def object_from_jsonpickle(self, encoded_object):  # decoding JSONpickle object -> Python object
        decoded_object = jsonpickle.decode(encoded_object)
        return decoded_object

__________________________________________________________________________________________


from FileManager import FileManager


class UserManager:

fm = FileManager()

    def json_dump_list(self):  # lista z obiektami typu user -> *.json
        self.fm.json_dump_object(self.fm.object_to_jsonpickle(self.list_of_users))

    def json_load_list(self):  # *.json -> lista z obiektami typu user
        self.list_of_users = self.fm.object_from_jsonpickle(self.fm.json_load_object())