PyQt5 QDoubleSpinBox – Setting Prefix

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In this article we will see how we can set prefix to the QDoubleSpinBox. A prefix is an affix which is placed before the stem of a word. Adding it to the beginning of one word changes it into another word. For example, when the prefix un- is added to the word happy, it creates the word unhappy. A string can be added infront of the double spin box value.

In order to do this we will use setPrefix method with the double spin box object.

Syntax : dd_spin.setPrefix(text)

Argument : It takes string as argument

Return : It returns None

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, 500, 400) 
  
        # calling method 
        self.UiComponents() 
  
        # showing all the widgets 
        self.show() 
  
    # method for components 
    def UiComponents(self): 
  
        # creating double spin box 
        d_spin = QDoubleSpinBox(self) 
  
        # setting geometry to the double spin box 
        d_spin.setGeometry(100, 100, 150, 40) 
  
        # setting prefix 
        d_spin.setPrefix("Value : ") 
  
        # step type 
        step_type = QAbstractSpinBox.AdaptiveDecimalStepType 
  
        # adaptive step type 
        d_spin.setStepType(step_type) 
  
        # creating a label 
        label = QLabel("zambiatek", self) 
  
        # setting geometry to the label 
        label.setGeometry(100, 200, 300, 80) 
  
        # making label multi line 
        label.setWordWrap(True) 
  
  
  
# create pyqt5 app 
App = QApplication(sys.argv) 
  
# create the instance of our Window 
window = Window() 
  
# start the app 
sys.exit(App.exec()) 