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PyQt5 | How to display decimal values in Progress Bar ?

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  • Last Updated : 22 Apr, 2020

In this article we will see how to display the decimal values in Progress Bar. We can set the value in progress bar using setValue method but it takes integer as argument. If we try to pass float or double value, it will automatically convert them into integer.

In order to do this we have to do the following :

  1. Change the maximum range value of progress bar, by default it is from 0 to 100. If we want to show 1 decimal value set it to 100*n here ‘n’ will be 10, if we want to show 2 decimal values set it to 100*n here n will be 100 and so on.
  2. Set value to progress bar by multiplying it by ‘n’.
  3. Use format method to display the decimal value.

Below is the implementation.

# importing libraries
from PyQt5.QtWidgets import * 
from PyQt5 import QtCore, QtGui
from PyQt5.QtGui import * 
from PyQt5.QtCore import * 
import sys
class Window(QMainWindow):
    def __init__(self):
        # setting title
        self.setWindowTitle("Python ")
        # setting geometry
        self.setGeometry(100, 100, 600, 400)
        # calling method
        # showing all the widgets
    # method for widgets
    def UiComponents(self):
        # creating progress bar
        bar = QProgressBar(self)
        # setting geometry to progress bar
        bar.setGeometry(200, 150, 200, 30)
        # setting value of n for 2 decimal values
        n = 100
        # setting maximum value for 2 decimal points
        bar.setMaximum(100 * n)
        # value in percentage
        value = 75.55
        # setting the value by multiplying it to 100
        bar.setValue(value * n)
        # displaying the decimal value
        bar.setFormat("%.02f %%" % value)
        # setting alignment to centre
# create pyqt5 app
App = QApplication(sys.argv)
# create the instance of our Window
window = Window()
# start the app

Output :

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