def _addTag(self, term, scheme, label):
        context = self._getContext()
        tags = context.setdefault('tags', [])
        if (not term) and (not scheme) and (not label):
            return
        value = FeedParserDict(term=term, scheme=scheme, label=label)
        if tags not in value:
            tags.append(value)
dataset/ETHPy150Open SickRage/SickRage/lib/feedparser/mixin.py/_FeedParserMixin._addTag/swapped operands of `not in`