qt4 - How I can add an object to a list in python? -

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def guardar(self):      saux=""      combobox=self.ui.cmbitems.currenttext()      cantidad=str(self.ui.spinbox.value())      subtotal=self.ui.txbseleccion.text()      costounidad=self.ui.txbcostou.text()      saux=cantidad+"--"+combobox+" $(unidad)"+costounidad+" $(total)"+subtotal     self.ui.textbrowser.append(saux)

i want pull sum of subtotal (i'm using qt4 if in doubt)

anyone know how can do?, thanks


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