class MainWindow(QDialog, mainForm.Ui_Form):
    def __init__(self, parent=None):
        super(MainWindow, self).__init__(parent)
        self.setupUi(self)

        #Acciones
        self.sponsorsVisitarBtn.clicked.connect(self.visitar)

    def visitar(self):
        webbrowser.open(self.sponsorUrlEdit.text)