В частности добавлять данные в listWidget.
class Excel(QtGui.QDialog):
def __init__(self, path, parent=None):
QtGui.QDialog.__init__(self, parent)
self._path = path
self._xl = win32com.client.Dispatch("Excel.Application")
....
class Window(QtGui.QDialog):
def __init__(self, parent=None):
QtGui.QDialog.__init__(self, parent)
uic.loadUi("form.ui", self)
if __name__ == "__main__":
app = QtGui.QApplication(sys.argv)
win = Window()
win.show()
app.exec_()