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 :

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