How to add a menu bar in PyQt5?

To add a menu bar in PyQt5, you need to use the QMenuBar class and the QMenu class. Here is a simple example:

import sys
from PyQt5.QtWidgets import QApplication, QMainWindow, QAction, QMenu

class MenuExample(QMainWindow):
    def __init__(self):
        super().__init__()
        
        self.initUI()
        
    def initUI(self):
        menubar = self.menuBar()
        
        fileMenu = menubar.addMenu('File')
        
        newAction = QAction('New', self)
        fileMenu.addAction(newAction)
        
        openAction = QAction('Open', self)
        fileMenu.addAction(openAction)
        
        saveAction = QAction('Save', self)
        fileMenu.addAction(saveAction)
        
        exitAction = QAction('Exit', self)
        exitAction.triggered.connect(self.close)
        fileMenu.addAction(exitAction)
        
        self.setGeometry(300, 300, 300, 200)
        self.setWindowTitle('Menu Example')
        
if __name__ == '__main__':
    app = QApplication(sys.argv)
    ex = MenuExample()
    ex.show()
    sys.exit(app.exec_())

In this example, we created a window class called MenuExample and added a menu bar that includes a menu called File with several actions (New, Open, Save, and Exit). When the Exit menu item is clicked, the window will close.

Running this code will display a window with a menu bar.

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To add a menu bar in PyQt5, you need to use the QMenuBar class and the QMenu class. Here is a simple example:

import sys
from PyQt5.QtWidgets import 

QMainWindow

QMenuBar

QMenu