from PySide2 import QtWidgets,QtCore,QtGui


class myWindow(QtWidgets.QDialog):
    def __init__(self, parent=None):
        super(myWindow, self).__init__(parent)
        self.actionHello = QtWidgets.QAction("Hello",self)
        #self.actionHello.setText("Hola")
        self.actionHello.triggered.connect(self.PrintHello)

        self.actionBye = QtWidgets.QAction("Bye",self)
        #self.actionBye.setText("Bye")
        self.actionBye.triggered.connect(self.PrintBye)

        self.actionMeh = QtWidgets.QAction("Meh",self)
        #self.actionMeh.setText("Meh")
        self.actionMeh.triggered.connect(self.PrintMeh)


        self.menu = QtWidgets.QMenu(self)
        self.menu.addAction(self.actionHello)
        self.menu.addAction(self.actionBye)
        self.menu.addSeparator()
        self.menu.addAction(self.actionMeh)

        self.buttonShow = QtWidgets.QPushButton(self)
        self.buttonShow.setText("Cool Menu")
        self.buttonShow.setMenu(self.menu)

        self.layout = QtWidgets.QVBoxLayout(self)
        self.layout.addWidget(self.buttonShow)
        self.show()

    def PrintHello(self):
        print "Hello"

    def PrintBye(self):
        print "Bye"

    def PrintMeh(self):
        print "Meh"

win=myWindow()