Lists change simultaneously

def change_several_books(self, start_list_dictionaries):
        changed_list_dictionaries = start_list_dictionaries.copy()
        shortest_dict = min(changed_list_dictionaries, key=len)
        dict_for_change = shortest_dict.copy()
        for key, value in dict_for_change.items():
            if isinstance(value, dict):
                for desc, type_value in value.items():
                    new_value = input(f"--------<{desc}>: ")
                    if new_value in ["del", "<del>"]:
                        dict_for_change[key] = "<del>"
                    elif new_value == "":
                        dict_for_change[key] = "<continue>"
                    else:
                        if isinstance(type_value, (str, int, dict)):
                            changed_dictionary[key_in_initial_dict] = {desc: new_value}
                        elif isinstance(type_value, list):
                            try:
                                changed_dictionary[key_in_initial_dict] =\
                                    {desc: json.loads(new_value)}
                            except json.decoder.JSONDecodeError:
                                changed_dictionary[key_in_initial_dict] =\
                                    {desc: [new_value]}


        for dictionary in changed_list_dictionaries:
            for initial_key in dictionary.copy().keys():
                for key_for_change, value_for_change in dict_for_change.items():
                    if initial_key == key_for_change:
                        if value_for_change == "<continue>":
                            pass
                        elif value_for_change == "<del>":
                            del dictionary[initial_key]
                        elif isinstance(value_for_change, dict):
                            dictionary[initial_key] = value_for_change

        with open(self.full_path, 'r') as file:
            file_contents = json.load(file)

        file_contents = [
            element
            for element in file_contents
            if element not in start_list_dictionaries
        ]
        file_contents.extend(changed_list_dictionaries)

        with open(self.full_path, 'w') as file:
            json.dump(file_contents, file)

        print("\nSuccess!")