Python - tkinter如何读取第二个下拉值

import tkinter as tk
from tkinter import ttk

root = tk.Tk()

# 创建下拉列表
combo1 = ttk.Combobox(root)
combo2 = ttk.Combobox(root)

combo1['values'] = ['选项1', '选项2', '选项3']
combo2['values'] = ['选项A', '选项B', '选项C']

def get_second_dropdown_value():
    value = combo2.get()
    print("第二个下拉值：", value)

button = tk.Button(root, text="获取第二个下拉值", command=get_second_dropdown_value)

combo1.pack()
combo2.pack()
button.pack()

root.mainloop()