python PyQt添加菜单选项

QWidget.addAction(action)

class Window(QMainWindow):

    # Snip...

    def _createMenuBar(self):

        menuBar = self.menuBar()

        # File menu

        fileMenu = QMenu("&File", self)

        menuBar.addMenu(fileMenu)

        fileMenu.addAction(self.newAction)

        fileMenu.addAction(self.openAction)

        fileMenu.addAction(self.saveAction)

        fileMenu.addAction(self.exitAction)

        # Edit menu

        editMenu = menuBar.addMenu("&Edit")

        editMenu.addAction(self.copyAction)

        editMenu.addAction(self.pasteAction)

        editMenu.addAction(self.cutAction)

        # Help menu

        helpMenu = menuBar.addMenu(QIcon(":help-content.svg"), "&Help")

        helpMenu.addAction(self.helpContentAction)

        helpMenu.addAction(self.aboutAction)