#NEWLINE# def indexes( self , fields ) : #NEWLINE# #INDENT# 'Return a tuple with indexes of fields from ``fields`` in a data row. Fields\n        should be a list of ``Field`` objects or strings.\n\n        This method is useful when it is more desirable to process data as rows (arrays), not as\n        dictionaries, for example for performance purposes.\n        ' #NEWLINE# indexes = [ self . index ( field ) for field in fields ] #NEWLINE# return tuple ( field )