#导入所需的库
from tkinter import *
from tkinter import ttk

#创建Tkinter框架的实例
win=Tk()

#设置窗口的几何形状
win.geometry("750x250")

#创建一个LabelFrame
labelframe= LabelFrame(win)

#在窗口中定义画布
canvas= Canvas(labelframe)
canvas.pack(side=RIGHT, fill=BOTH, expand=1)

labelframe.pack(fill= BOTH, expand= 1, padx= 30, pady=30)

#在画布中创建Button小部件
for i in range(5):
   ttk.Button(canvas, text= "Button "+str(i)).pack()

win.mainloop()