Fix import on Python 2.x
Fix import on Python 2.x
lpsinger/astropy,dhomeier/astropy,aleksandr-bakanov/astropy,MSeifert04/astropy,astropy/astropy,aleksandr-bakanov/astropy,bsipocz/astropy,DougBurke/astropy,funbaker/astropy,funbaker/astropy,pllim/astropy,mhvk/astropy,pllim/astropy,AustereCuriosity/astropy,stargaser/astropy,funbaker/astropy,kelle/astropy,mhvk/astropy,stargaser/astropy,DougBurke/astropy,MSeifert04/astropy,saimn/astropy,stargaser/astropy,AustereCuriosity/astropy,kelle/astropy,bsipocz/astropy,lpsinger/astropy,AustereCuriosity/astropy,funbaker/astropy,dhomeier/astropy,DougBurke/astropy,kelle/astropy,bsipocz/astropy,lpsinger/astropy,mhvk/astropy,astropy/astropy,saimn/astropy,larrybradley/astropy,mhvk/astropy,pllim/astropy,pllim/astropy,saimn/astropy,larrybradley/astropy,mhvk/astropy,astropy/astropy,StuartLittlefair/astropy,lpsinger/astropy,MSeifert04/astropy,astropy/astropy,saimn/astropy,StuartLittlefair/astropy,larrybradley/astropy,StuartLittlefair/astropy,larrybradley/astropy,kelle/astropy,dhomeier/astropy,aleksandr-bakanov/astropy,lpsinger/astropy,dhomeier/astropy,DougBurke/astropy,kelle/astropy,pllim/astropy,stargaser/astropy,astropy/astropy,AustereCuriosity/astropy,saimn/astropy,bsipocz/astropy,StuartLittlefair/astropy,StuartLittlefair/astropy,AustereCuriosity/astropy,larrybradley/astropy,MSeifert04/astropy,aleksandr-bakanov/astropy,dhomeier/astropy