src/transformers/models/tapas/tokenization_tapas.py/TapasTokenizer/_get_column_values
class TapasTokenizer:    def _get_column_values(self, table, col_index):
        table_numeric_values = {}
        for row_index, row in table.iterrows():
            cell = row[col_index]
            if cell.numeric_value is not None:
                table_numeric_values[row_index] = cell.numeric_value
        return table_numeric_values