Flake8 fix
Flake8 fix

pieiscool/edited-hearthbreaker,Ragowit/hearthbreaker,slaymaker1907/hearthbreaker,anuragpapineni/Hearthbreaker-evolved-agent,anuragpapineni/Hearthbreaker-evolved-agent,jirenz/CS229_Project,anuragpapineni/Hearthbreaker-evolved-agent,slaymaker1907/hearthbreaker,pieiscool/edited-hearthbreaker,noa/hearthbreaker,kingoflolz/hearthbreaker,danielyule/hearthbreaker