def _openOpfPredictionCsvFile(self, filepath):
<EOL>csvReader = self._openCsvFile(filepath)<EOL>names = next(csvReader)<EOL>_types = next(csvReader)<EOL>_specials = next(csvReader)<EOL>return (csvReader, names)<EOL>
Open an OPF prediction CSV file and advance it to the first data row

        Returns:      the tuple (csvReader, fieldNames), where 'csvReader' is the
                      csv reader object, and 'fieldNames' is a sequence of field
                      names.