Fix for Python 3
Fix for Python 3

StuartLittlefair/astropy,astropy/astropy,lpsinger/astropy,kelle/astropy,funbaker/astropy,saimn/astropy,MSeifert04/astropy,funbaker/astropy,aleksandr-bakanov/astropy,kelle/astropy,joergdietrich/astropy,StuartLittlefair/astropy,lpsinger/astropy,mhvk/astropy,AustereCuriosity/astropy,astropy/astropy,MSeifert04/astropy,MSeifert04/astropy,pllim/astropy,AustereCuriosity/astropy,dhomeier/astropy,AustereCuriosity/astropy,StuartLittlefair/astropy,kelle/astropy,mhvk/astropy,DougBurke/astropy,MSeifert04/astropy,StuartLittlefair/astropy,aleksandr-bakanov/astropy,lpsinger/astropy,DougBurke/astropy,kelle/astropy,aleksandr-bakanov/astropy,larrybradley/astropy,stargaser/astropy,larrybradley/astropy,mhvk/astropy,tbabej/astropy,larrybradley/astropy,aleksandr-bakanov/astropy,DougBurke/astropy,stargaser/astropy,StuartLittlefair/astropy,bsipocz/astropy,dhomeier/astropy,astropy/astropy,funbaker/astropy,kelle/astropy,joergdietrich/astropy,larrybradley/astropy,tbabej/astropy,bsipocz/astropy,tbabej/astropy,saimn/astropy,mhvk/astropy,tbabej/astropy,mhvk/astropy,AustereCuriosity/astropy,tbabej/astropy,astropy/astropy,pllim/astropy,lpsinger/astropy,stargaser/astropy,joergdietrich/astropy,DougBurke/astropy,AustereCuriosity/astropy,stargaser/astropy,funbaker/astropy,joergdietrich/astropy,saimn/astropy,larrybradley/astropy,saimn/astropy,bsipocz/astropy,dhomeier/astropy,joergdietrich/astropy,pllim/astropy,dhomeier/astropy,astropy/astropy,pllim/astropy,pllim/astropy,saimn/astropy,bsipocz/astropy,lpsinger/astropy,dhomeier/astropy