>>> foo.findall('.//[@id]')
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File "lxml.etree.pyx", line 1547, in lxml.etree._ElementTree.findall
  File "lxml.etree.pyx", line 1182, in lxml.etree._Element.findall
  File "/home/jhammel/fsm.env/opencore/lib/python2.4/site-packages/lxml-2.0beta1-py2.4-linux-x86_64.egg/lxml/_elementpath.py", line 216, in findall
    return list(iterfind(elem, path))
  File "/home/jhammel/fsm.env/opencore/lib/python2.4/site-packages/lxml-2.0beta1-py2.4-linux-x86_64.egg/lxml/_elementpath.py", line 197, in iterfind
    selector = _build_path_iterator(path)
  File "/home/jhammel/fsm.env/opencore/lib/python2.4/site-packages/lxml-2.0beta1-py2.4-linux-x86_64.egg/lxml/_elementpath.py", line 181, in _build_path_iterator
    selector.append(ops[token[0]](next, token))
  File "/home/jhammel/fsm.env/opencore/lib/python2.4/site-packages/lxml-2.0beta1-py2.4-linux-x86_64.egg/lxml/_elementpath.py", line 93, in prepare_iter
    raise SyntaxError
SyntaxError