gnucash/python/init.py:122: PyGTKDeprecationWarning: Using positional arguments with the GObject constructor has been deprecated. Please specify keyword(s) for "type" or use a class specific constructor. See: https://wiki.gnome.org/PyGObject/InitializerDeprecations window = Gtk.Window(Gtk.WindowType.TOPLEVEL) needs to be fixed.
Patch https://github.com/Gnucash/gnucash/pull/496