python怎么添加分割线

#window下怎么写分割线的代码，还是说只能再root下写分割线？

# -*- coding: utf-8 -*-
import tkinter as tk
import tkinter.messagebox
import pickle

# 窗口
window = tk.Tk()
window.title('窗体')
window.geometry('1500x800')

window.mainloop()  #主循环

你的window不就是root吗

import tkinter as tk
from tkinter import ttk
window = tk.Tk()
window.geometry('320x240')
a=tk.Button(window,text='Button')
a.pack()

b=ttk.Separator(window,orient='horizontal')
b.pack(fill=tk.X)
window.mainloop()