PyQt5 QSpinBox – Changing value using stepBy method

In this article we will see how we can change the value of spin box using setBy method, we can step up the value of spin box with the help of arrow button as well but in order to change the value we use setBy method, this method add the passed value to the current value.

In order to do so we use setBy method.

Syntax : spin_box.setBy(n)

Argument : It takes integer as argument

Action performed : It change the value of spin box

Implementation steps :
1. Create a spin box
2. Create a push button
3. Add action to the push button
4. Inside the action call the stepBy method

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 spin box
        self.spin = QSpinBox(self)

        # setting geometry to spin box
        self.spin.setGeometry(100, 100, 250, 40)

        # setting prefix to spin
        self.spin.setPrefix("Prefix ")

        # setting suffix to spin
        self.spin.setSuffix(" Suffix")

        # creating a push button
        push = QPushButton("Press", self)

        # setting geometry to the push button
        push.setGeometry(100, 200, 100, 40)

        # adding action to the push button
        push.clicked.connect(self.do_action)

    # method called by push button
    def do_action(self):

        # change value by 5 steps
        self.spin.stepBy(5)

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

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

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

Output :