class Edit(QLineEdit):
    def __init__( self, title, parent ):
        super().__init__(title,parent)
        self.setDragEnabled(True)
        # funciones para drap and drop
    def dragEnterEvent(self, e):
        if e.mimeData().hasUrls():
            e.accept()
        else:
            e.ignore()
    def dropEvent(self, e):
        if e.mimeData().hasUrls():
            e.accept()
            for url in e.mimeData().urls():
                path = url.toLocalFile()
                self.setText(path)
        else:
            e.ignore()