Form.setFixedSize(289, 110)def cikis(self):
sys.exit()Form.connect(self.pushButton, QtCore.SIGNAL("pressed()"), self.topla)
Form.connect(self.pushButton_2, QtCore.SIGNAL("pressed()"), self.cikis)def topla(self):
sayi1=self.lineEdit.text()
sayi2=self.lineEdit_2.text()
toplam=int(sayi1)+int(sayi2)
self.label_2.setText(str(toplam))sys.exit(app.exec_())