def createBackgroundSettings(self):
     s = QgsTextBackgroundSettings()
     s.setEnabled(True)
     s.setType(QgsTextBackgroundSettings.ShapeEllipse)
     s.setSvgFile('svg.svg')
     s.setSizeType(QgsTextBackgroundSettings.SizeFixed)
     s.setSize(QSizeF(1, 2))
     s.setSizeUnit(QgsUnitTypes.RenderPixels)
     s.setSizeMapUnitScale(QgsMapUnitScale(1, 2))
     s.setRotationType(QgsTextBackgroundSettings.RotationFixed)
     s.setRotation(45)
     s.setOffset(QPointF(3, 4))
     s.setOffsetUnit(QgsUnitTypes.RenderMapUnits)
     s.setOffsetMapUnitScale(QgsMapUnitScale(5, 6))
     s.setRadii(QSizeF(11, 12))
     s.setRadiiUnit(QgsUnitTypes.RenderPixels)
     s.setRadiiMapUnitScale(QgsMapUnitScale(15, 16))
     s.setFillColor(QColor(255, 0, 0))
     s.setStrokeColor(QColor(0, 255, 0))
     s.setOpacity(0.5)
     s.setJoinStyle(Qt.RoundJoin)
     s.setBlendMode(QPainter.CompositionMode_Difference)
     s.setStrokeWidth(7)
     s.setStrokeWidthUnit(QgsUnitTypes.RenderMapUnits)
     s.setStrokeWidthMapUnitScale(QgsMapUnitScale(QgsMapUnitScale(25, 26)))
     s.setPaintEffect(QgsBlurEffect.create({'blur_level': '6', 'enabled': '1'}))
     return s

 def createBufferSettings(self):
     s = QgsTextBufferSettings()
     s.setEnabled(True)
     s.setSize(5)
     s.setSizeUnit(QgsUnitTypes.RenderPixels)
     s.setSizeMapUnitScale(QgsMapUnitScale(1, 2))
     s.setColor(QColor(255, 0, 0))
     s.setFillBufferInterior(True)
     s.setOpacity(0.5)
     s.setJoinStyle(Qt.RoundJoin)
     s.setBlendMode(QPainter.CompositionMode_Difference)
     s.setPaintEffect(QgsBlurEffect.create({'blur_level': '10', 'enabled': '1'}))
     return s