Use string_types
Use string_types

quantopian/zipline,wilsonkichoi/zipline,magne-max/zipline-ja,bartosh/zipline,humdings/zipline,quantopian/zipline,umuzungu/zipline,alphaBenj/zipline,enigmampc/catalyst,umuzungu/zipline,humdings/zipline,enigmampc/catalyst,florentchandelier/zipline,bartosh/zipline,alphaBenj/zipline,wilsonkichoi/zipline,florentchandelier/zipline,Scapogo/zipline,Scapogo/zipline,magne-max/zipline-ja