设置菜单栏

效果如下：

代码：

"""
This program creates a menubar.
The menubar has one menu with an exit action.
"""

import sys
from PyQt5.QtWidgets import QMainWindow, QAction, qApp, QApplication
from PyQt5.QtGui import QIcon


class Example(QMainWindow):

    def __init__(self):
        super().__init__()

        self.initUI()

    def initUI(self):

        # create an action with a specific icon and an 'Exit' label.
        exitAct = QAction(QIcon('picturesexit.png'), '&Exit', self)

        # a shortcut is defined for this action
        exitAct.setShortcut('Ctrl+Q')
        # creates a status tip which is shown in the statusbar
        # when we hover a mouse pointer over the menu item
        exitAct.setStatusTip('Exit application')
        # The signal is connected to the quit() method of the QApplication widget
        exitAct.triggered.connect(qApp.quit)

        self.statusBar()

        # The menuBar() method creates a menubar
        menubar = self.menuBar()
        # create a file menu with addMenu()
        fileMenu = menubar.addMenu('&File')
        # add the action with addAction()
        fileMenu.addAction(exitAct)

        self.setGeometry(300, 300, 300, 200)
        self.setWindowTitle('Simple menu')
        self.show()


if __name__ == '__main__':

    app = QApplication(sys.argv)
    ex = Example()
    sys.exit(app.exec_())