code: def blake2b(data=b'', **kwargs):
      '''
      byte-like -> bytes
      '''
      b2 = hashlib.blake2b(**kwargs)
      b2.update(data)
      return b2.digest(f blake2b(data=b'', **kwargs):
      '''
      byte-like -> bytes
      '''
      b2 = hashlib.blake2b(**kwargs)
      b2.update(data)
      return b2.digest()
docs: byte-like -> bytes