# Python imports # Lib imports import gi gi.require_version('Gtk', '3.0') from gi.repository import Gtk # Application imports from .image_list_scroll import ImageListScroll class LeftBox(Gtk.Box): def __init__(self): super(LeftBox, self).__init__() self._setup_styling() self._setup_signals() self._load_widgets() self.show_all() def _setup_styling(self): self.set_size_request(96, -1) self.set_vexpand(True) self.set_orientation(Gtk.Orientation.VERTICAL) def _setup_signals(self): ... def _load_widgets(self): self.add(ImageListScroll())