from tkinter import *

root = Tk()
root.title("GUI Example")
root.geometry("300x250")
root.option_add("*font", "tahoma 10 bold")
frame = Frame(root)
frame.config(background="cyan")
frame.place(width=300, height=250, x=0, y=0)
root.option_add("*foreground", "navy")
label1 = Label(frame, text="Radiobutton Example", width=30);
label1.grid(column=0,row=0, columnspan=2, padx=15, pady=15)
label2 = Label(frame, text="Customer Type", width=30, bg="cyan")
label2.grid(column=0,row=1, columnspan=2, padx=5, pady=5)
var = IntVar()
r1 = Radiobutton(frame, text="major", width=10, variable=var, value=1)
r1.grid(column=0, row=2, padx=15, pady=15)
r2 = Radiobutton(frame, text="senior",  width=10, variable=var,  value=2)
r2.grid(column=1, row=2, padx=15, pady=15)
var.set(1)
root.mainloop()