fix flake8 issue
fix flake8 issue

nava45/junction,praba230890/junction,hTrap/junction,ChillarAnand/junction,shashisp/junction,pythonindia/junction,NabeelValapra/junction,farhaanbukhsh/junction,NabeelValapra/junction,Rahul91/junction,Rahul91/junction,pythonindia/junction,shashisp/junction,pythonindia/junction,akshayaurora/junction,nava45/junction,ChillarAnand/junction,praba230890/junction,shashisp/junction,ChillarAnand/junction,nava45/junction,pythonindia/junction,akshayaurora/junction,shashisp/junction,nava45/junction,NabeelValapra/junction,hTrap/junction,ChillarAnand/junction,NabeelValapra/junction,praba230890/junction,Rahul91/junction,akshayaurora/junction,farhaanbukhsh/junction,farhaanbukhsh/junction,praba230890/junction,akshayaurora/junction,Rahul91/junction,hTrap/junction,hTrap/junction,farhaanbukhsh/junction