python3 tkinter如何实现点击一个按钮跳出另一个窗口

#-*- encoding:utf-8 -*-
from tkinter import *

root = Tk()

def create():
    top = Toplevel()
    top.title('Python')

    v1 = StringVar()
    e1 = Entry(top,textvariable=v1,width=10)
    e1.grid(row=1,column=0,padx=1,pady=1)

    Button(top, text='出现2级').grid(row=1,column=1,padx=1,pady=1)



Button(root, text='点击1级', command=create).pack()

mainloop()