我是编码的新手，只是学习Python。我搜索了答案，但找不到答案。

我正在尝试制作一个用于学习目的的计算器，但无法使底部keyboard frame扩展或buttons内部扩展以匹配根窗口的边界

这是我的代码：

from tkinter import  *

# main window configuration
root=Tk()
root.geometry("1000x1000")

root.grid_columnconfigure(0, weight=1)
root.grid_rowconfigure(0, weight=1)
# main window frames

topmenu=Frame(root,padx=5,pady=5)
display=Frame(root,padx=5,pady=5)
keyboard=Frame(root,padx=5,pady=5,bg="red")

topmenu.grid(row=0,column=0)
display.grid(row=1,column=0)
keyboard.grid(row=2,column=0)




# topmenu widgets

# display widgets

#keyboard widgets
 #  prima riga
percentagebutton=Button(keyboard,padx=5,pady=5,text="%")
squarerootbutton=Button(keyboard,padx=5,pady=5,text="√x")
squarebutton=Button(keyboard,padx=5,pady=5,text="x²")
inversebutton=Button(keyboard,padx=5,pady=5,text="1/x")

percentagebutton.grid(row=0,column=0,sticky='EWNS')
squarerootbutton.grid(row=0,column=1,sticky='EWNS')
squarebutton.grid(row=0,column=2,sticky='EWNS')
inversebutton.grid(row=0,column=3,sticky='EWNS')

#   seconda riga
resetbutton=Button(keyboard,padx=5,pady=5,text="C")
deletebutton=Button(keyboard,padx=5,pady=5,text="←")
divisionbutton=Button(keyboard,padx=5,pady=5,text="÷")


resetbutton.grid(row=1,column=0,columnspan=2,sticky='EWNS')
deletebutton.grid(row=1,column=2,sticky='EWNS')
divisionbutton.grid(row=1,column=3,sticky='EWNS')


#   terza riga

sevenbutton=Button(keyboard,padx=5,pady=5,text="7")
eightbutton=Button(keyboard,padx=5,pady=5,text="8")
ninebutton=Button(keyboard,padx=5,pady=5,text="9")
moltiplicationbutton=Button(keyboard,padx=5,pady=5,text="X")

sevenbutton.grid(row=2,column=0,sticky='EWNS')
eightbutton.grid(row=2,column=1,sticky='EWNS')
ninebutton.grid(row=2,column=2,sticky='EWNS')
moltiplicationbutton.grid(row=2,column=3,sticky='EWNS')
#   quarta riga
fourbutton=Button(keyboard,padx=5,pady=5,text="4")
fivebutton=Button(keyboard,padx=5,pady=5,text="5")
sixbutton=Button(keyboard,padx=5,pady=5,text="6")
minusbutton=Button(keyboard,padx=5,pady=5,text="-")

fourbutton.grid(row=3,column=0,sticky='EWNS')
fivebutton.grid(row=3,column=1,sticky='EWNS')
sixbutton.grid(row=3,column=2,sticky='EWNS')
minusbutton.grid(row=3,column=3,sticky='EWNS')






#   quinta riga
onebutton=Button(keyboard,padx=5,pady=5,text="1")
twobutton=Button(keyboard,padx=5,pady=5,text="2")
threebutton=Button(keyboard,padx=5,pady=5,text="3")
plusbutton=Button(keyboard,padx=5,pady=5,text="+")

onebutton.grid(row=4,column=0,sticky='EWNS')
twobutton.grid(row=4,column=1,sticky='EWNS')
threebutton.grid(row=4,column=2,sticky='EWNS')
plusbutton.grid(row=4,column=3,sticky='EWNS')


#   sesta riga
signbutton=Button(keyboard,padx=5,pady=5,text="±")
zerobutton=Button(keyboard,padx=5,pady=5,text="0")
commabutton=Button(keyboard,padx=5,pady=5,text=",")
resultbutton=Button(keyboard,padx=5,pady=5,text="=")

signbutton.grid(row=5,column=0,sticky='EWNS')
zerobutton.grid(row=5,column=1,sticky='EWNS')
commabutton.grid(row=5,column=2,sticky='EWNS')
resultbutton.grid(row=5,column=3,sticky='EWNS')



root.mainloop()

这是我的计算器当前的图像：

如何制作keyboard frame和buttons调整大小以匹配根窗口的边框？