PyQt5 QSpinBox Widget

QSpinBox is a PyQt5 widget which presents the user with a textbox that displays an integer with up/down button on its right. The value in the textbox increases/decreases if the up/down button is pressed. The default minimum value is 0 and maximum value is 99.

Example : A window having a Spinbox, when value changes a message will appear displaying the current value.

Steps for implementation - 1. Create main window class 2. Create a spin box widget 3. Create a label to show the value 4. Add action to the spin box such that when value is changed action should get called 5. Inside the action set value to the label

Below is the implementation

Python3 1==

# 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, 100, 40)

        # adding action to the spin box
        self.spin.valueChanged.connect(self.show_result)

        # creating label show result
        self.label = QLabel(self)

        # setting geometry
        self.label.setGeometry(100, 200, 200, 40)

    # method called by spin box
    def show_result(self):

        # setting value of spin box to the label
        self.label.setText("Value : " + str(self.spin.value()))


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

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

window.show()

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

Output :

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