Pythonフォーム（tkinter）ツリーデータ（Treeview）について詳しく説明します。

import tkinter
from tkinter import ttk #     
 
win=tkinter.Tk()
tree=ttk.Treeview(win)
 
   #  :parent, index, iid=None, **kw (   ，     ，id，      )
myid=tree.insert("",0,"  ",text="  China",values=("1")) # ""       
myidx1=tree.insert(myid,0,"  ",text="    ",values=("2")) # text        ，values     
myidx2=tree.insert(myid,1,"  ",text="    ",values=("3"))
myidy=tree.insert("",1,"  ",text="  USA",values=("4")) 
myidy1=tree.insert(myidy,0,"  ",text="    ",values=("5"))
 
tree.pack()
win.mainloop()