python tkinter-Progress bar

loading indicator to show the processing progress.
2 types:
1)determinate
2)indeterminate

python code:
from tkinter import ttk

from tkinter import *
root=Tk()
pb2 = ttk.Progressbar(root, mode='determinate', name='pb2')
pb2.grid(row=1, column=0, columnspan=2, pady=5, padx=10)

pb2.start()


root.mainloop()