In this article we will see how we can find the total number of items present in the combo box. We know we can add items in the combo box with the help of addItem method to add single item and addItems method to add multiple items. In order to get the count of all the items in the combo box we will use count method.
Syntax : combo_box.count()
Argument : It takes no argument
Return : It will return integer i.e number of items in combo box
Steps for implementation:
1. Create a combo box
2. Add items to combo box
3. Create push button
4. Add action to the push button
5. Create label to show count
5. Inside the action count the items of combo box with the help of count method and store it in variable
6. Show the count variable in label with the help of setText method
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", "Legend Geek", "Ultra Legend Geek"] # adding list of items to combo box self.combo_box.addItems(geek_list) # creating push button to clear the list button = QPushButton("Find Count ", self) print(self.combo_box.count()) # adding action to button button.pressed.connect(self.find_count) # creating label to show count self.label = QLabel(self) # setting geometry of the label self.label.setGeometry(200, 200, 200, 30) def find_count(self): # finding the number of items in cmbo box count = self.combo_box.count() # showing count on the screen though label self.label.setText("Total number of items : " + str(count)) # 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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