PyQt5 – How to set the maximum value of progress bar ?

In this article we will see how to set the maximum value of progress bar. By default the maximum value of progress bar is 100, but we can change it to our need. In order to do this we will use setMaximum method, this will change the maximum value of progress bar.

Note : When we will set the value to progress bar using setValue method, the percentage may or may not be equal to the value passed in it, it depends on the range of progress bar.

percentage = ((value_passed - minimum_value)/(maximum_value - minimum_value))*100

Here, minimum_value = 0, value_passed and maximum_value is set by user.

Syntax : bar.setMaximum(maximum_value)

Argument : It takes argument.

Action performed : It will change the maximum value of progress bar.

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):
        super().__init__()

        # setting title
        self.setWindowTitle("Python ")

        # setting geometry
        self.setGeometry(100, 100, 600, 400)

        # calling method
        self.UiComponents()

        # showing all the widgets
        self.show()

    # method for widgets
    def UiComponents(self):

        # creating progress bar
        bar = QProgressBar(self)

        # setting geometry to progress bar
        bar.setGeometry(200, 150, 200, 30)

        # setting maximum value of progress bar to 1000
        bar.setMaximum(1000)

        # setting value to progress bar
        bar.setValue(200)

        # setting alignment to centre
        bar.setAlignment(Qt.AlignCenter)


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

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

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

Output :