test format is None for float col
test format is None for float col

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