PyQt5 QDoubleSpinBox – Setting Prefix Last Updated : 28 Jul, 2020 Summarize Comments Improve Suggest changes Share Like Article Like Report 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 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, 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("GeeksforGeeks", 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 : Comment More infoAdvertise with us Next Article PyQt5 QDoubleSpinBox â Stepping By R rakshitarora Follow Improve Article Tags : Python Python-PyQt Python-gui Python PyQt-QDoubleSpinBox Practice Tags : python Similar Reads PyQt5 QDoubleSpinBox - Setting Value In this article we will see how we can set value to the QDoubleSpinBox. User can set any decimal value(float) to the QDoubleSpinBox with the help of mouse and keyboard, but sometimes there is a need of setting value programmatically in order to overwrite the value entered by the user. In order to do 2 min read PyQt5 QDoubleSpinBox – Setting Decimal Precision In this article we will see how we can set decimal precision of the QDoubleSpinBox. By default decimal precision of double spin box is 2 although we can change it any time. Decimal precision is the number of digits to the right of the decimal point in a number. For example, the number 123.45 has a d 2 min read PyQt5 QDoubleSpinBox – Stepping By In this article we will see how we can step by definite number the value of the QDoubleSpinBox programmatically. Double spin box can take decimal value as input, we can set value with the help of setValue method, stepping by will add the definite number to the current value it can be positive as wel 2 min read PyQt5 QDoubleSpinBox – Setting Suffix In this article we will see how we can set suffix the QDoubleSpinBox. In linguistics, a suffix is an affix which is placed after the stem of a word. Common examples are case endings, which indicate the grammatical case of nouns or adjectives, and verb endings, which form the conjugation of verbs. An 2 min read PyQt5 QSpinBox - Setting Properties In this article we will see how we can set properties to the spin box, properties are the information added by the developer to tell about the properties of the spin box, for example if spin box has a ability to loop the values, developer will add this property so that other developer can see this a 2 min read PyQt5 QDoubleSpinBox - Setting Step Type Property In this article we will see how we can set the step type property of the QDoubleSpinBox. This property holds the step type. The step type can be single step or adaptive decimal step. By default when we change the value it get change by whole number not by the decimal value although we can change thi 2 min read Like