pyqt5创建菜单栏、状态栏和工具栏

import sys
from PyQt5.QtWidgets import QMainWindow, QApplication, QMenuBar, QAction, qApp, QTextEdit
from PyQt5.QtGui import QIcon
from PyQt5.QtCore import QCoreApplication


class Test(QMainWindow):

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

    def initUI(self):
        textEdit = QTextEdit()
        self.setCentralWidget(textEdit)

        # 创建一个Action
        exitAction = QAction(QIcon('exit.png'), 'Exit', self)
        exitAction.setShortcut('Ctrl+Q')
        exitAction.setStatusTip('退出程序')
        exitAction.triggered.connect(self.close)

        # 底部状态栏
        self.statusBar().showMessage('状态栏')

        # 顶部菜单栏
        menubar = self.menuBar()
        menubar.setNativeMenuBar(False)
        fileMenu = menubar.addMenu('File')
        fileMenu.addAction(exitAction)

        # 次顶部的工具栏
        toolbar = self.addToolBar('Exit')
        toolbar.addAction(exitAction)

        self.setGeometry(300, 300, 400, 400)
        self.setWindowTitle('QMainWindow')
        self.show()
        pass



if __name__ == '__main__':
    app = QApplication(sys.argv)
    example = Test()
    sys.exit(app.exec_())
    pass