其实有这个样式选项- 。@H_404_1@
import tkinter as tk
from tkinter import ttk
root = tk.Tk()
root.minsize(300, 300)
root.geometry("1000x700")
s = ttk.Style()
s.configure('TNotebook', tabposition='ne') #'ne' as in compass direction
@R_278_2419@ = ttk.Notebook(root, width=1000, height=650)
tab1 = tk.Frame(root)
tab2 = tk.Frame(root)
tab3 = tk.Frame(root)
@R_278_2419@.add(tab1, text="tab1")
@R_278_2419@.add(tab2, text="tab2")
@R_278_2419@.add(tab3, text="tab3")
@R_278_2419@.pack(side=tk.TOP)
root.mainloop()