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
from tkinter import * from tkinter.ttk import *
root = Tk()
progress = Progressbar(root, orient = HORIZONTAL,
length = 100 , mode = 'determinate' )
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 )
Button(root, text = 'Start' , command = bar).pack(pady = 10 )
mainloop()
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Output:
Code #2: In
indeterminate mode
from tkinter import * from tkinter.ttk import *
root = Tk()
progress = Progressbar(root, orient = HORIZONTAL,
length = 100 , mode = 'indeterminate' )
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 )
Button(root, text = 'Start' , command = bar).pack(pady = 10 )
mainloop()
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Output: