Scrollbar python GUI ... tkinter

from tkinter import *
root = Tk()
root.geometry("455x233")
root.title("Scrollbar")

#for connecting scrollbar to a widge
# 1.widget(y scroll command = scrollbar.set)
# 2. scrollbar.config(command-widget.yview)

scrollbar = Scrollbar(root)
scrollbar.pack(side= RIGHT, fill=Y)

lstbox = Listbox(root)
for i in range(355):
lstbox.insert(END, f"item {i}")
lstbox.pack(fill="both", padx=22)

scrollbar.config(command=lstbox.yview)

root.mainloop()