fix pep8 violation
fix pep8 violation

skeuomorf/cryptography,skeuomorf/cryptography,Ayrx/cryptography,bwhmather/cryptography,dstufft/cryptography,sholsapp/cryptography,kimvais/cryptography,dstufft/cryptography,kimvais/cryptography,kimvais/cryptography,kimvais/cryptography,bwhmather/cryptography,Hasimir/cryptography,Hasimir/cryptography,sholsapp/cryptography,dstufft/cryptography,Hasimir/cryptography,Ayrx/cryptography,Ayrx/cryptography,sholsapp/cryptography,Ayrx/cryptography,bwhmather/cryptography,sholsapp/cryptography,Hasimir/cryptography,dstufft/cryptography,bwhmather/cryptography,dstufft/cryptography,skeuomorf/cryptography,skeuomorf/cryptography