class MyWidget(QWidget):

    def __init__(self, parent=None):
        super(MyWidget, self).__init__(parent)

        self.styleoption = QStyleOptionFrameV2()
        qle = QLineEdit()
        qle.initStyleOption(self.styleoption)
    def paintEvent(self, event):
        painter = QPainter(self)
        self.styleoption.rect =         self.contentsRect()
        self.style().drawPrimitive(QStyle.PE_PanelLineEdit, self.styleoption, painter)