Encode error

[fatihkrsd]

Hi sir,
İ can't use this library because giving this error.
How can i get rid of it? Thanks

assert sha3('').encode('hex') == 'c5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470'
AttributeError: 'bytes' object has no attribute 'encode'