def _update_data(self, row, column, value):
        f = self.files[row]
        setattr(f, self.__HEADERS[column]['attr'], str(value))
        self.emit(QtCore.SIGNAL('modelReset()'))
update internal data at (row, column) to value
dataset/ETHPy150Open shotgunsoftware/pyqt-uploader/uploader.py/ShotgunFileModel._update_data