import sysfrom PyQt4 import QtCore, QtGuifrom frmAlgo import Ui_frmAlgoclass dlgAlgo(QtGui.QDialog): def __init__(self): QtGui.QDialog.__init__(self) #Inicializar el formulario self.ui = Ui_frmAlgo() self.ui.setupUi(self) # Conectar los botones con funciones del dialogo. self.connect(self.ui.btnSumar, QtCore.SIGNAL("clicked()"),self.suma) self.connect(self.ui.btnRestar, QtCore.SIGNAL("clicked()"),self.resta) def suma(self): a = int(self.ui.txtOperando1.text()) b = int(self.ui.txtOperando2.text()) c = a + b self.ui.txtResultado.setText(str(c)) def resta(self): a = int(self.ui.txtOperando1.text()) b = int(self.ui.txtOperando2.text()) c = a - b self.ui.txtResultado.setText(str(c))