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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def setup_tree(self):
 """Setup an example Treeview"""

        self.tree.insert("", tk.END, text="Example 1", iid="1")
        self.tree.insert("", tk.END, text="Example 2", iid="2")
        self.tree.insert("2", tk.END, text="Example Child")
        self.tree.heading("#0", text="Example heading")