Tk Treeview Focus(). How do I Get Multiple Selected Lines?
Use ttk.treeview.selection().
It gives the selected items. See also other Treeview methods with selection prefix such as,
selection_addselection_removeselection_toggleSee the example below:
import tkinter as tkfrom tkinter import ttk, Tkdef insert(tree, value): tree.insert('', tk.END, value, text=value)root = Tk()tree = ttk.Treeview(root)insert(tree, '1')insert(tree, '2')insert(tree, '3')tree.pack()children = tree.get_children() tree.selection_set(children)tree.selection_toggle(children[1])# uncomment line by line to see the change#tree.selection_toggle(children)#tree.selection_remove(children[1])print(tree.selection())root.mainloop()