Use importlib.machinery.all_suffixes if possible for open files test
Use importlib.machinery.all_suffixes if possible for open files test

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