from tkinter import *

def a():

b = d.get()

if b == 3:

label1.config(text="回答正确")

else:

label1.config(text="回答错误")

c=Tk()

c.geometry("400x400")

c.title("单选题")

label1 = Label(c,text="问琵琶行中“嘈嘈切切错杂弹“的上一句为何？",bg="green",font=("华文仿宋，300"))

label1.pack()

d = IntVar()

radiobutton1 = Radiobutton(c,text="大弦嘈嘈如急雨",font=("华文仿宋，200"),variable=d,value=1,command=a)

radiobutton1.pack()

radiobutton2 = Radiobutton(c,text="大珠小珠落玉盘",font=("华文仿宋，200"),variable=d,value=2,command=a)

radiobutton2.pack()

radiobutton3 = Radiobutton(c,text="小弦切切如私语",font=("华文仿宋，200"),variable=d,value=3,command=a)

radiobutton3.pack()

radiobutton4 = Radiobutton(c,text="间关莺语花底滑",font=("华文仿宋，200"),variable=d,value=4,command=a)

radiobutton4.pack()

c.mainloop()