PyQt5 – Getting the role of selected item in ComboBox

In this article we will see how we can get the role of selected item in the combo box. Role is basically additional data provided with the item, in order get the role of selected item we use currentData method.

Syntax : combo_box.currentData() 

Argument : It takes no argument 

Return : It return string i.e role of selected item

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 a combo box widget
        self.combo_box = QComboBox(self)

        # setting geometry of combo box
        self.combo_box.setGeometry(200, 150, 120, 30)

        # geek list
        geek_list = ["Geek", "Geeky Geek", "Legend Geek", "Ultra Legend Geek"]

        # adding list of items to combo box
        self.combo_box.addItems(geek_list)

        # setting roles to the items
        self.combo_box.setItemData(0, "First role")
        self.combo_box.setItemData(1, "Second role")
        self.combo_box.setItemData(2, "Third role")
        self.combo_box.setItemData(3, "Fourth role")

        # create push button
        button = QPushButton("Show", self)

        # adding action to the button
        button.pressed.connect(self.show_role)

        # creating label
        self.label = QLabel(self)

        # setting geometry of the label
        self.label.setGeometry(200, 200, 200, 30)

    def show_role(self):

        # getting the role of selected item
        role = self.combo_box.currentData()

        # showing the role throw label
        self.label.setText(role)

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

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

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

Output :