PyQt pass data from class

[luca72]

Hello i need to this

class Form(QWidget, Ui_Form):
    """
    Class documentation goes here.
    """
    def __init__(self, parent=None):
        """
        Constructor
        
        @param parent reference to the parent widget
        @type QWidget
        """
        super(Form, self).__init__(parent)
        self.setupUi(self)
        self.tabWidget.setCurrentIndex(0)
        combo = QComboBox()
        self.disegno = Cornice()

class Cornice(QPainter):
    
    def __init__(self, parent=None):
        
        lista_dati = []

in the class Form i have a lineEdit

in the class Cornice i need to write something link

self.lineEdit.setText('blabla') that is in the class Form

in wich way i can have access to the lineedit of class Form without event from class Cornice

Many Thanks