def prepare_for_new_session(self):
        """Execute setups to assist in editing."""
        ### execute __init__ method of base classes;
        ###
        ### that is, of the base classes which have a custom
        ### __init__ method
        initialize_bases(self)

        ### rebuild category color picking form
        self.rebuild_category_color_form()

        ### reset default filename for image to be exported
        ### in the image exporting form
        reset_image_filename()
Execute setups to assist in editing.
nodezator/editing/main.py