flake8 fix
flake8 fix

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