PyQt5 QProgressBar – How to create progress bar ?

In this article we will see how we can create the progress bar in PyQt5. In order to create progress bar object we will use QProgressBar.

A progress bar is a graphical control element used to visualize the progression of an extended computer operation, such as a download, file transfer, or installation. Sometimes, the graphic is accompanied by a textual representation of the progress in a percent format.

Syntax :

pbar = QProgressBar(self)

Code :

# importing libraries
from PyQt5.QtWidgets import *
from PyQt5.QtGui import *
from PyQt5.QtCore import *
import sys
import time

class Example(QWidget):

    def __init__(self):
        super().__init__()

        # calling initUI method
        self.initUI()

    # method for creating widgets
    def initUI(self):

        # creating progress bar
        self.pbar = QProgressBar(self)

        # setting its geometry
        self.pbar.setGeometry(30, 40, 200, 25)

        # creating push button
        self.btn = QPushButton('Start', self)

        # changing its position
        self.btn.move(40, 80)

        # adding action to push button
        self.btn.clicked.connect(self.doAction)

        # setting window geometry
        self.setGeometry(300, 300, 280, 170)

        # setting window action
        self.setWindowTitle("Python")

        # showing all the widgets
        self.show()

    # when button is pressed this method is being called
    def doAction(self):

        # setting for loop to set value of progress bar
        for i in range(101):

            # slowing down the loop
            time.sleep(0.05)

            # setting value to progress bar
            self.pbar.setValue(i)

# main method
if __name__ == '__main__':


    # create pyqt5 app
    App = QApplication(sys.argv)

    # create the instance of our Window
    window = Example()

    # start the app
    sys.exit(App.exec())

Output :