Undocumented in source.
The gtk.TreeStore object is a list model for use with a gtk.TreeView widget. It implements the gtk.TreeModel interface, and consequentially, can use all of the methods available there. It also implements the GtkTreeSortable interface so it can be sorted by the view. Finally, it also implements the tree [drag and drop][gtk3-GtkTreeView-drag-and-drop] interfaces.