[Python] Python, Tkinter, show list as an Excel sheet in a window just one time?

I have a list with Customer data (Name, Address, ID) in Python and a button in Tkinter window. When I click on "Show List_1" button then I see the list as a table use treeview so it works. When I click again, then I see two times the table, when click again then tree times. How does it work show the list just one time and just "refresh" the window, when I click on the button to show it?

I tried to use treeview.delete and destroy() function, but then when I click on the button, I see nothing, nothing happens.

def Vevok_Listazasa():

Lista = [Vevok("ID_1","Ceg_1","Cim_1"),
Vevok("ID_2","Ceg_2","Cim_2"),
Vevok("ID_3","Ceg_3","Cim_3")]

tree = ttk.Treeview(window, column=("c1","c2","c3"), show='headings')
tree.column("#1", anchor=CENTER)
tree.heading("#1", text="ID")
tree.column("#2", anchor=CENTER)
tree.heading("#2", text="Vevo_Nev")
tree.column("#3", anchor=CENTER)
tree.heading("#3", text="Ceg_cim")

index = iid = 0

for item in Lista:
tree.insert("", index, iid, values=item)
index = iid = index+1

tree.pack()
tree.destroy()

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