把填好的组合框变成一个数字？

import tkinter as tk
from tkinter import ttk

def get_selected_number():
    selected_text = combo.get()
    try:
        number = int(selected_text)
        print(f"Selected number: {number}")
    except ValueError:
        print("Invalid input, please select a valid number.")

root = tk.Tk()
root.title("ComboBox to Number")

combo = ttk.Combobox(root, values=["1", "2", "3", "4", "5"])
combo.pack()

button = tk.Button(root, text="Get Number", command=get_selected_number)
button.pack()

root.mainloop()

def get_selected_number():
    selected_text = combo.get()
    if selected_text:
        try:
            number = int(selected_text)
            print(f"Selected number: {number}")
        except ValueError:
            print("Invalid input, please select a valid number.")
    else:
        print("No value selected.")