字体菜单PyQt5文本编辑器

问题是:

我试图找到一种方法,将字体样式添加到由PyQt5文本编辑器程序的用户编写的文本中。我不想手动将每种字体编码到某种菜单中,我想知道是否有一种内置方式可以让用户像这样为文本选择字体样式(记事本字体选择器):

class App(QMainWindow):
    def __init__(self):
        super().__init__()
        self.title = 'Text Editor'
        self.left = 10
        self.top = 10
        self.width = 1080
        self.height = 920

        self.widget = QWidget(self)
        self.lbl    = QLabel(self)

        self.text = QTextEdit(self.widget)
        self.widget.setLayout(QVBoxLayout())
        self.widget.layout().addWidget(self.text)
        self.setCentralWidget(self.widget)
        self.initUI()



   def initUI(self):
        self.setWindowTitle(self.title)
        self.setGeometry(self.left, self.top, self.width, self.height)

        toolBar = self.menuBar()
        fileMenu = toolBar.addMenu('File')
        editMenu = toolBar.addMenu('Edit')
        toolsMenu = toolBar.addMenu('Tools')
        helpMenu = toolBar.addMenu('Help')

        fontButton = QAction('Configure Editor', self)
        fontButton.setShortcut('Ctrl+E')
        fontButton.triggered.connect(lambda: self.font_set)
        toolsMenu.addAction(fontButton)

        self.show()

   def font_set(self):
        print("Display Fonts")


if __name__ == '__main__':
app = QApplication(sys.argv)
ex = App()
sys.exit(app.exec_())