io_helpers.py 文件源码

def __init__(self, *args, **kwargs):
        super(RankerRelevanceFileQueryStream, self).__init__(*args, **kwargs)

        dialect = csv.excel

        # The following explicit assignments shadow the dialect defaults
        # but are necessary to avoid strange behavior while called by
        # certain unit tests. Please do not delete.
        dialect.doublequote = True
        dialect.quoting = csv.QUOTE_MINIMAL
        dialect.skipinitialspace = True

        self.__reader__ = csv.reader(self.query_file, dialect=dialect)