text: from tkinter import *
  
  root = Tk()
  root.title('Scrollbar')
  root.geometry("400x600")
  
  print('I am in scrollbar app1!')
  #Scrollbar
  my_frame = Frame(root)
  my_scrollbar = Scrollbar(my_frame, orient=VERTICAL)
  
  #list Box
  # SINGLE, BROWSE, MULTIPLE, EXTENED
  my_listbox = Listbox(my_frame, width=50, yscrollcommand=my_scrollbar.set)
  
  #scrollbar configure
  my_scrollbar.config(command=my_listbox.yview)
  my_scrollbar.pack(side=RIGHT, fill=Y)
  print('I am in scrollbar app2!')
  my_frame.pack()
  print('I am in scrollbar app3!')
  
  my_listbox.pack(pady=5)
  my_listbox.insert(END, "This is an item")
  my_listbox.insert(END, "This is an item")
  my_listbox.insert(END, "This is an item")
  my_listbox.insert(END, "This is an item")
  my_listbox.insert(END, "This is an item")
  my_listbox.insert(END, "This is an item")
  my_listbox.insert(END, "This is an item")
  my_listbox.insert(END, "This is an item")
  my_listbox.insert(END, "This is an item")
  my_listbox.insert(END, "This is an item")
  
  print('I am in scrollbar app4!')