NameError: global name 'END' is not defined

Question

I have found this code about scrollbar is just working fine.

from tkinter import *

master = Tk()

scrollbar = Scrollbar(master)
scrollbar.pack(side=RIGHT,          


        

Answer 1

END, LEFT, and BOTH all reside in the tkinter namespace. Thus, they need to be qualified by placing tk. before them:

for i in range(1000):
    self.lst1.insert(tk.END, str(i))
self.lst1.pack(side=tk.LEFT, fill=tk.BOTH)
scrollbar.config(command=lst1.yview)

Or, you could import them explicitly if you want:

from tkinter import BOTH, END, LEFT

Answer 2

use "end" instead of END

from tkinter import *
self.lst1.insert("end", str(i))