Make sure that handlers are closed and not added multiple times
Make sure that handlers are closed and not added multiple times

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