Fix doctests on Python 3.2
Fix doctests on Python 3.2

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