如何在列表框tkinter的curselection上设置标签

listbox = Listbox(root)

listbox.insert(END, "Option 1")
listbox.insert(END, "Option 2")
listbox.insert(END, "Option 3")

label = Label(root, text="")

def on_select(event):
    selected_index = listbox.curselection()
    if selected_index:
        selected_option = listbox.get(selected_index)
        label.config(text="Selected Option: " + selected_option)
    else:
        label.config(text="No option selected")

listbox.bind("<<ListboxSelect>>", on_select)

listbox.pack()
label.pack()