What is the error in it??

Question

from tkinter import *
root = Tk()
e = Entry(root).pack()
def func():
l = Label(root,text=str(e.get())).pack()
e.delete(0,END)
bu = Button(root,text="click",command=func).pack()

root.mainloop()

Answer 1

from tkinter import *
root = Tk()

def func():
l.config(text=e.get())
e.delete(0,END)

e = Entry(root)
l = Label(root)
bu = Button(root,text="Click",command=func)

e.pack()
l.pack()
bu.pack()

root.mainloop()