UPDATE: self.item appears to start life off as an identifier pointing to to a dict(), but (I think) can be replaced by any other data structure. Sorry @stefano.menci I know you’re typing a reply. Just had to insert that. 
UPDATE: self.item appears to start life off as an identifier pointing to to a dict(), but (I think) can be replaced by any other data structure. Sorry @stefano.menci I know you’re typing a reply. Just had to insert that.