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
setPrefixmethod 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 fromPyQt5.QtWidgets import*fromPyQt5 importQtCore, QtGui fromPyQt5.QtGui import*fromPyQt5.QtCore import*importsys   classWindow(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     defUiComponents(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("neveropen", 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())  | 
Output :

 
                                    







