How to unselect text in textBox on tkinter?

Hello,

In my program, I use tkinter and a textbox contenent a text. The text should be select, unselect and select a next word

My code select word but don’t unselect

my code
for l in self.list :

        pos=1

            self.textBox.tag_add(SEL,str (float (pos)),str (float (pos+len(l)-1) ) )
           #  https://python-forum.io/Thread-How-to-delete-text-from-a-tkinter-Text-widget?pid=47751#pid47751 Larz60+
            self.textBox.update()
            self.textBox.mark_set(INSERT,str (float (pos) ))
            self.textBox.see(INSERT)



indent preformatted text by 4 spaces

but my code select a wold but bo unselect and select the next word

how to unselect a word or all word on tkinter textbox

thanks for your support

Best regards

Battamt