352     maybebytestr = identity

   352     maybebytestr = identity

   353     sysbytes = identity

   353     sysbytes = identity

   354     sysstr = identity

   354     sysstr = identity

   355     strurl = identity

   355     strurl = identity

   356     bytesurl = identity

   356     bytesurl = identity

   357 

   358 

   358     # this can't be parsed on Python 3

   359     # this can't be parsed on Python 3

   359     exec(b'def raisewithtb(exc, tb):\n' b'    raise exc, None, tb\n')

   360     exec(b'def raisewithtb(exc, tb):\n' b'    raise exc, None, tb\n')

   360 

   361 

   361     def fsencode(filename):

   362     def fsencode(filename):