PyQt5 QSpinBox – Checking if text is bold ?

In this article we will see how we can check if the text of the spin box is bold not, in order to set the font use setFont method which takes QFont object as argument. In order to make the text i.e font bold we have to get the QFont object of the spin box then make it bold then reassign it to the spin box. In order to get the information about the font we have to get the QFontInfo object of spin box which can be done using fontInfo method.

In order to do this we bold method with the QFontInfo object of the spin box 

Syntax : font_info.bold() 

Argument : It takes no argument 

Return : It returns bool

Below is the implementation 

Python3

# 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 range to the spin box
        self.spin.setRange(0, 999999)

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

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

        # getting font of the spin box
        font = self.spin.font()

        # making font bold
        font.setBold(True)

        # reassigning the font to the spin box
        self.spin.setFont(font)

        # creating a label
        label = QLabel(self)

        # setting geometry to the label
        label.setGeometry(100, 200, 300, 60)

        # getting the font info
        font_info = self.spin.fontInfo()

        # getting bold status of text
        check = font_info.bold()

        # setting text to the label
        label.setText("Bold ? : " + str(check))


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

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

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

Output :