def _parse_tokens(chunk, format=[WORD, POS, CHUNK, PNP, REL, ANCHOR, LEMMA]):
 tokens = []
 if (not ((chunk.tag == XML_CHUNK) or (chunk.tag == XML_CHINK))):
  return []
 type = chunk.get(XML_TYPE, 'O')
 if (type == 'PNP'):
  for ch in chunk:
   tokens.extend(_parse_tokens(ch, format))
  if (PNP in format):
   i = format.index(PNP)
   for (j, token) in enumerate(tokens):
    token[i] = ((((j == 0) and 'B-') or 'I-') + 'PNP')
  a = chunk.get(XML_OF).split(_UID_SEPARATOR)[(-1)]
  if a:
   _attachments.setdefault(a, [])
   _attachments[a].append(tokens)
  return tokens
 relation = _parse_relation(chunk, type)
 for word in filter((lambda n: (n.tag == XML_WORD)), chunk):
  tokens.append(_parse_token(word, chunk=type, relation=relation, format=format))
 if (CHUNK in format):
  i = format.index(CHUNK)
  for (j, token) in enumerate(tokens):
   token[i] = (((token[i] != 'O') and ((((j == 0) and 'B-') or 'I-') + token[i])) or 'O')
 a = chunk.get(XML_ANCHOR, '').split(_UID_SEPARATOR)[(-1)]
 if a:
  _anchors[a] = tokens
 return tokens

def _parse_tokens ( chunk , format = [ WORD , POS , CHUNK , PNP , REL , ANCHOR , LEMMA ] ) : tokens = [ ] if ( not ( ( chunk . tag == XML_CHUNK ) or ( chunk . tag == XML_CHINK ) ) ) : return [ ] type = chunk . get ( XML_TYPE , 'O' ) if ( type == 'PNP' ) : for ch in chunk : tokens . extend ( _parse_tokens ( ch , format ) ) if ( PNP in format ) : i = format . index ( PNP ) for ( j , token ) in enumerate ( tokens ) : token [ i ] = ( ( ( ( j == 0 ) and 'B-' ) or 'I-' ) + 'PNP' ) a = chunk . get ( XML_OF ) . split ( _UID_SEPARATOR ) [ ( - 1 ) ] if a : _attachments . setdefault ( a , [ ] ) _attachments [ a ] . append ( tokens ) return tokens relation = _parse_relation ( chunk , type ) for word in filter ( ( lambda n : ( n . tag == XML_WORD ) ) , chunk ) : tokens . append ( _parse_token ( word , chunk = type , relation = relation , format = format ) ) if ( CHUNK in format ) : i = format . index ( CHUNK ) for ( j , token ) in enumerate ( tokens ) : token [ i ] = ( ( ( token [ i ] != 'O' ) and ( ( ( ( j == 0 ) and 'B-' ) or 'I-' ) + token [ i ] ) ) or 'O' ) a = chunk . get ( XML_ANCHOR , '' ) . split ( _UID_SEPARATOR ) [ ( - 1 ) ] if a : _anchors [ a ] = tokens return tokens
parse the tokens .