# Rule to specify skipping data with @clean when one of certain values is found by the key.
from collections import namedtuple


SkippingRule = namedtuple("SkippingRule", ("key", "values"), defaults=("", (None,)))

#
FIELDS_SKIPPING_MAP = tuple(SkippingRule(k) for k in ("artist_id", "playlist_id", "track_id", "date"))

ITEM_SKIPPING_MAP = (SkippingRule("streams", (None, 0)),)