def bytes_to_str(s, encoding='utf-8'):
 if (six.PY3 and isinstance(s, bytes)):
  return s.decode(encoding)
 return s

def bytes_to_str ( s , encoding = 'utf-8' ) : if ( six . PY3 and isinstance ( s , bytes ) ) : return s . decode ( encoding ) return s
returns a str if a bytes object is given .