0 I'm building my first Tkinter GUI, and I need to create a multi-column Listbox using TKtreectrl, but when importing the module I get this error, import error: No module named "TkTreectrl". How to solve this problem, thanks in advance. What I have tried: <pre>from TkTreectrl.Treectrl import Treectrl
TkTreeCtrl
TkTreectrl
var
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