How to use the qtawesome.Pulse function in QtAwesome

options=[{'scale_factor': 0.8,
                                     'offset': (0.2, 0.2),
                                     'color': 'gray'},
                                    {'scale_factor': 0.8}])
        saveall_button = QtWidgets.QPushButton(saveall, 'Stack, offset')

        # Spin icons
        spin_button = QtWidgets.QPushButton(' Spinning icon')
        spin_icon = qta.icon('fa5s.spinner', color='red',
                             animation=qta.Spin(spin_button))
        spin_button.setIcon(spin_icon)

        # Pulse icons
        pulse_button = QtWidgets.QPushButton(' Pulsing icon')
        pulse_icon = qta.icon('fa5s.spinner', color='green',
                              animation=qta.Pulse(pulse_button))
        pulse_button.setIcon(pulse_icon)

        # Stacked spin icons
        stack_spin_button = QtWidgets.QPushButton('Stack spin')
        options = [{'scale_factor': 0.4,
                    'animation': qta.Spin(stack_spin_button)},
                   {'color': 'blue'}]
        stack_spin_icon = qta.icon('ei.asl', 'fa5.square',
                                   options=options)
        stack_spin_button.setIcon(stack_spin_icon)
        stack_spin_button.setIconSize(QtCore.QSize(32, 32))

        # Render a label with this font
        label = QtWidgets.QLabel(chr(0xf19c) + ' ' + 'Label')
        label.setFont(qta.font('fa', 16))