adding dict_items doesn't work in python3.
adding dict_items doesn't work in python3.

d-mittal/pystruct,pystruct/pystruct,wattlebird/pystruct,pystruct/pystruct,massmutual/pystruct,d-mittal/pystruct,amueller/pystruct,massmutual/pystruct,wattlebird/pystruct,amueller/pystruct