minor fix for python3 compatibility
minor fix for python3 compatibility

MSeifert04/numpy,shoyer/numpy,charris/numpy,madphysicist/numpy,ahaldane/numpy,charris/numpy,pizzathief/numpy,numpy/numpy,pbrod/numpy,abalkin/numpy,jakirkham/numpy,mhvk/numpy,WarrenWeckesser/numpy,madphysicist/numpy,anntzer/numpy,grlee77/numpy,pdebuyl/numpy,rgommers/numpy,mhvk/numpy,seberg/numpy,Eric89GXL/numpy,jorisvandenbossche/numpy,abalkin/numpy,pizzathief/numpy,pdebuyl/numpy,mattip/numpy,Eric89GXL/numpy,endolith/numpy,mattip/numpy,gfyoung/numpy,seberg/numpy,simongibbons/numpy,Eric89GXL/numpy,mattip/numpy,ahaldane/numpy,Eric89GXL/numpy,numpy/numpy,shoyer/numpy,tynn/numpy,anntzer/numpy,endolith/numpy,anntzer/numpy,rgommers/numpy,rgommers/numpy,mhvk/numpy,seberg/numpy,endolith/numpy,jakirkham/numpy,grlee77/numpy,pbrod/numpy,madphysicist/numpy,ahaldane/numpy,jorisvandenbossche/numpy,mhvk/numpy,MSeifert04/numpy,gfyoung/numpy,jakirkham/numpy,grlee77/numpy,pdebuyl/numpy,shoyer/numpy,ahaldane/numpy,endolith/numpy,charris/numpy,tynn/numpy,pizzathief/numpy,ahaldane/numpy,anntzer/numpy,MSeifert04/numpy,MSeifert04/numpy,WarrenWeckesser/numpy,jakirkham/numpy,pdebuyl/numpy,pbrod/numpy,grlee77/numpy,jorisvandenbossche/numpy,shoyer/numpy,simongibbons/numpy,seberg/numpy,simongibbons/numpy,simongibbons/numpy,WarrenWeckesser/numpy,madphysicist/numpy,gfyoung/numpy,rgommers/numpy,shoyer/numpy,numpy/numpy,tynn/numpy,jakirkham/numpy,charris/numpy,mattip/numpy,grlee77/numpy,WarrenWeckesser/numpy,abalkin/numpy,madphysicist/numpy,jorisvandenbossche/numpy,numpy/numpy,jorisvandenbossche/numpy,pbrod/numpy,pizzathief/numpy,simongibbons/numpy,pbrod/numpy,MSeifert04/numpy,pizzathief/numpy,mhvk/numpy,WarrenWeckesser/numpy