Progressbar widget in Tkinter | Python

Last Updated : 01 May, 2019

The purpose of this widget is to reassure the user that something is happening. It can operate in one of two modes –
In determinate mode, the widget shows an indicator that moves from beginning to end under program control.
In indeterminate mode, the widget is animated so the user will believe that something is in progress. In this mode, the indicator bounces back and forth between the ends of the widget.

Syntax:

widget_object = Progressbar(parent, **options)

Code #1 In determinate mode

# importing tkinter module 
from tkinter import * from tkinter.ttk import *
  
# creating tkinter window 
root = Tk() 
  
# Progress bar widget 
progress = Progressbar(root, orient = HORIZONTAL, 
              length = 100, mode = 'determinate') 
  
# Function responsible for the updation 
# of the progress bar value 
def bar(): 
    import time 
    progress['value'] = 20
    root.update_idletasks() 
    time.sleep(1) 
  
    progress['value'] = 40
    root.update_idletasks() 
    time.sleep(1) 
  
    progress['value'] = 50
    root.update_idletasks() 
    time.sleep(1) 
  
    progress['value'] = 60
    root.update_idletasks() 
    time.sleep(1) 
  
    progress['value'] = 80
    root.update_idletasks() 
    time.sleep(1) 
    progress['value'] = 100
  
progress.pack(pady = 10) 
  
# This button will initialize 
# the progress bar 
Button(root, text = 'Start', command = bar).pack(pady = 10) 
  
# infinite loop 
mainloop() 

Output:

Code #2: In indeterminate mode

# importing tkinter module 
from tkinter import * from tkinter.ttk import *
  
# creating tkinter window 
root = Tk() 
  
# Progress bar widget 
progress = Progressbar(root, orient = HORIZONTAL, 
            length = 100, mode = 'indeterminate') 
  
# Function responsible for the updation 
# of the progress bar value 
def bar(): 
    import time 
    progress['value'] = 20
    root.update_idletasks() 
    time.sleep(0.5) 
  
    progress['value'] = 40
    root.update_idletasks() 
    time.sleep(0.5) 
  
    progress['value'] = 50
    root.update_idletasks() 
    time.sleep(0.5) 
  
    progress['value'] = 60
    root.update_idletasks() 
    time.sleep(0.5) 
  
    progress['value'] = 80
    root.update_idletasks() 
    time.sleep(0.5) 
  
    progress['value'] = 100
    root.update_idletasks() 
    time.sleep(0.5) 
  
    progress['value'] = 80
    root.update_idletasks() 
    time.sleep(0.5) 
  
    progress['value'] = 60
    root.update_idletasks() 
    time.sleep(0.5) 
  
    progress['value'] = 50
    root.update_idletasks() 
    time.sleep(0.5) 
  
    progress['value'] = 40
    root.update_idletasks() 
    time.sleep(0.5) 
  
    progress['value'] = 20
    root.update_idletasks() 
    time.sleep(0.5) 
    progress['value'] = 0
      
  
progress.pack(pady = 10) 
  
# This button will initialize 
# the progress bar 
Button(root, text = 'Start', command = bar).pack(pady = 10) 
  
# infinite loop 
mainloop() 

Output:

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