from tkinter import *

def a():

b=gebo.get()

if b==2:

label1.config(text="回答正确")

else:

label1.config(text="回答错误")

top=Tk()

top.geometry("300x400")

top.title("单选题")

label1=Label(top,text="一个人有几条胳膊？",bg="green")

label1.pack()

gebo=IntVar()

radiobutton1=Radiobutton(top,text="1",variable=gebo,value=1,command=a)

radiobutton1.pack()

radiobutton1=Radiobutton(top,text="2",variable=gebo,value=2,command=a)

radiobutton1.pack()

radiobutton1=Radiobutton(top,text="3",variable=gebo,value=3,command=a)

radiobutton1.pack()

radiobutton1=Radiobutton(top,text="4",variable=gebo,value=4,command=a)

radiobutton1.pack()

top.mainloop()