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PyQt5 – Checking if the duplicate values are allowed or not in ComboBox
  • Last Updated : 22 Apr, 2020
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In this article we will see how we can check if duplicates insertions in the combo box are allowed or not. By default no duplicate insertion is allowed although programmatically inserting duplicate items into the combo box is possible but user can’t insert duplicate values. In order to allow duplicates insertion we will use setDuplicatesEnabled method.

In order to know if duplicate values are allowed or not we use duplicatesEnabled

Syntax : combo_box.duplicatesEnabled()

Argument : It takes no argument

Return : It return bool



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, 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"]
  
        # adding list of items to combo box
        self.combo_box.addItems(geek_list)
  
        # making it editable combo box
        self.combo_box.setEditable(True)
  
        # allowing duplication of items
        # setting duplicates = True
        self.combo_box.setDuplicatesEnabled(True)
  
        # checking if duplicates are allowed or not
        check = self.combo_box.duplicatesEnabled()
  
        # creating label to show check
        label = QLabel("Duplicates allowed ? : " + str(check), self)
  
        # setting geometry of label
        label.setGeometry(200, 200, 200, 30)
  
# create pyqt5 app
App = QApplication(sys.argv)
  
# create the instance of our Window
window = Window()
  
# start the app
sys.exit(App.exec())

Output :

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