如何从我在Python Tkinter中生成的条目表中获取数据？

from tkinter import Tk, Listbox

def get_selected_data():
    index = listbox.curselection()[0]
    data = listbox.get(index)
    print(data)

root = Tk()
listbox = Listbox(root)
listbox.insert(0, "Item 1")
listbox.insert(1, "Item 2")
listbox.pack()

button = Button(root, text="Get Selected Data", command=get_selected_data)
button.pack()

root.mainloop()

from tkinter import Tk, ttk

def get_data():
    selected_item = tree.selection()[0]
    data = tree.item(selected_item, 'values')
    print(data)

root = Tk()
tree = ttk.Treeview(root)
tree["columns"] = ("Column 1", "Column 2")
tree.insert("", "end", values=("Data 1", "Data 2"))
tree.pack()

button = Button(root, text="Get Selected Data", command=get_data)
button.pack()

root.mainloop()