Ejemplo n.º 1
0
def parse(args, stdinput):
    """Parse a given sentence after inducing a grammar from a given corpus.

    Parameters
    ----------
    args : list(str)
        The list of arguments: corpus file, sentence.
    stdinput : list(str)
        The pruning policy which should be used for the parsing process.

    """

    # assign the parameter values
    corpus = TigerXMLCorpusReader(args[0], encoding='utf8')
    sent = args[1]

    # create grammar and gold trees
    trees = [
        ImmutableTree.convert(canonicalize(t))
        for t in list(corpus.trees().values())
    ]
    sentences = list(corpus.sents().values())
    grammar = Grammar(trees, sentences)
    goldtrees = [t for s, t in zip(sentences, trees) if ' '.join(s) == sent]

    # create initial pruning policy
    pp = deserialize(stdinput, FEATURES, grammar) if\
        stdinput else PruningPolicy()

    # create derivation tree
    parser = Parser(grammar)
    derivationgraph = parser.parse(sent, pp)
    derivationtree = derivationgraph.get_tree()
    stdout.flush()

    # print results
    if isinstance(derivationtree, Tree):
        # print graphical representation if the sentence could be parsed
        print(derivationtree.pprint())
        drawtree = DrawTree(derivationtree, sent.split())
        print("\n derivation tree: \n" + drawtree.text())
    else:
        # otherwise print a error message
        print(derivationtree)
    if len(goldtrees) > 0:
        # print graphical representation if there is a gold tree
        drawgold = DrawTree(goldtrees[0], sent.split())
        print("\n gold tree: \n" + drawgold.text())
        # print recall if both trees are available
        if isinstance(derivationtree, Tree):
            print("\n recall: %f" % accuracy(derivationtree, goldtrees[0]))
Ejemplo n.º 2
0
def newlabel():
    """Re-draw tree with newly picked label."""
    sentno = int(request.args.get('sentno'))  # 1-indexed
    sent = SENTENCES[QUEUE[sentno - 1][0]]
    senttok, _ = worker.postokenize(sent)
    treestr = request.args.get('tree', '')
    try:
        tree, _sent1 = validate(treestr, senttok)
    except ValueError as err:
        return str(err)
    # FIXME: re-factor; check label AFTER replacing it
    # now actually replace label at nodeid
    _treeid, nodeid = request.args.get('nodeid', '').lstrip('t').split('_')
    nodeid = int(nodeid)
    dt = DrawTree(tree, senttok)
    match = LABELRE.match(dt.nodes[nodeid].label)
    if 'label' in request.args:
        label = request.args.get('label', '')
        dt.nodes[nodeid].label = (label + (match.group(2) or '') +
                                  (match.group(3) or ''))
    elif 'function' in request.args:
        label = request.args.get('function', '')
        if label == '':
            dt.nodes[nodeid].label = '%s%s' % (match.group(1), match.group(3)
                                               or '')
        else:
            dt.nodes[nodeid].label = '%s-%s%s' % (match.group(1), label,
                                                  match.group(3) or '')
    elif 'morph' in request.args:
        label = request.args.get('morph', '')
        if label == '':
            dt.nodes[nodeid].label = '%s%s' % (match.group(1), match.group(2)
                                               or '')
        else:
            dt.nodes[nodeid].label = '%s%s/%s' % (match.group(1),
                                                  match.group(2) or '', label)
    else:
        raise ValueError('expected label or function argument')
    tree = dt.nodes[0]
    dt = DrawTree(tree, senttok)  # kludge..
    treestr = writediscbrackettree(tree, senttok, pretty=True).rstrip()
    link = ('<a href="/annotate/accept?%s">accept this tree</a>' %
            urlencode(dict(sentno=sentno, tree=treestr)))
    session['actions'][RELABEL] += 1
    session.modified = True
    return Markup('%s\n\n%s\t%s' % (link,
                                    dt.text(unicodelines=True,
                                            html=True,
                                            funcsep='-',
                                            morphsep='/',
                                            nodeprops='t0'), treestr))
Ejemplo n.º 3
0
def replacesubtree():
    n = int(request.args.get('n', 0))
    sentno = int(request.args.get('sentno'))  # 1-indexed
    sent = SENTENCES[QUEUE[sentno - 1][0]]
    senttok, _ = worker.postokenize(sent)
    username = session['username']
    treestr = request.args.get('tree', '')
    try:
        tree, _sent1 = validate(treestr, senttok)
    except ValueError as err:
        return str(err)
    error = ''
    dt = DrawTree(tree, senttok)
    _treeid, nodeid = request.args.get('nodeid', '').lstrip('t').split('_')
    nodeid = int(nodeid)
    subseq = sorted(dt.nodes[nodeid].leaves())
    subsent = ' '.join(senttok[n] for n in subseq)
    root = dt.nodes[nodeid].label
    resp = WORKERS[username].submit(worker.getparses,
                                    subsent, (), (),
                                    root=root).result()
    _senttok, parsetrees, _messages, _elapsed = resp
    newsubtree = parsetrees[n - 1][1]
    pos = sorted(list(newsubtree.subtrees(lambda n: isinstance(n[0], int))),
                 key=lambda n: n[0])
    for n, a in enumerate(pos):
        a[0] = subseq[n]
    dt.nodes[nodeid][:] = newsubtree[:]
    tree = canonicalize(dt.nodes[0])
    dt = DrawTree(tree, senttok)  # kludge..
    treestr = writediscbrackettree(tree, senttok, pretty=True).rstrip()
    session['actions'][REPARSE] += 1
    session.modified = True
    link = ('<a href="/annotate/accept?%s">accept this tree</a>' %
            urlencode(dict(sentno=sentno, tree=treestr)))
    return Markup('%s\n\n%s%s\t%s' % (link, error,
                                      dt.text(unicodelines=True,
                                              html=True,
                                              funcsep='-',
                                              morphsep='/',
                                              nodeprops='t0'), treestr))
Ejemplo n.º 4
0
def reattach():
    """Re-draw tree after re-attaching node under new parent."""
    sentno = int(request.args.get('sentno'))  # 1-indexed
    sent = SENTENCES[QUEUE[sentno - 1][0]]
    senttok, _ = worker.postokenize(sent)
    treestr = request.args.get('tree', '')
    try:
        tree, _sent1 = validate(treestr, senttok)
    except ValueError as err:
        return str(err)
    dt = DrawTree(tree, senttok)
    error = ''
    if request.args.get('newparent') == 'deletenode':
        # remove nodeid by replacing it with its children
        _treeid, nodeid = request.args.get('nodeid', '').lstrip('t').split('_')
        nodeid = int(nodeid)
        x = dt.nodes[nodeid]
        if nodeid == 0 or isinstance(x[0], int):
            error = 'ERROR: cannot remove ROOT or POS node'
        else:
            children = list(x)
            x[:] = []
            for y in dt.nodes[0].subtrees():
                if any(child is x for child in y):
                    i = y.index(x)
                    y[i:i + 1] = children
                    tree = canonicalize(dt.nodes[0])
                    dt = DrawTree(tree, senttok)  # kludge..
                    break
    elif request.args.get('nodeid', '').startswith('newlabel_'):
        # splice in a new node under parentid
        _treeid, newparent = request.args.get('newparent',
                                              '').lstrip('t').split('_')
        newparent = int(newparent)
        label = request.args.get('nodeid').split('_', 1)[1]
        y = dt.nodes[newparent]
        if isinstance(y[0], int):
            error = 'ERROR: cannot add node under POS tag'
        else:
            children = list(y)
            y[:] = []
            y[:] = [Tree(label, children)]
            tree = canonicalize(dt.nodes[0])
            dt = DrawTree(tree, senttok)  # kludge..
    else:  # re-attach existing node at existing new parent
        _treeid, nodeid = request.args.get('nodeid', '').lstrip('t').split('_')
        nodeid = int(nodeid)
        _treeid, newparent = request.args.get('newparent',
                                              '').lstrip('t').split('_')
        newparent = int(newparent)
        # remove node from old parent
        # dt.nodes[nodeid].parent.pop(dt.nodes[nodeid].parent_index)
        x = dt.nodes[nodeid]
        y = dt.nodes[newparent]
        for node in x.subtrees():
            if node is y:
                error = ('ERROR: cannot re-attach subtree'
                         ' under (descendant of) itself\n')
                break
        else:
            for node in dt.nodes[0].subtrees():
                if any(child is x for child in node):
                    if len(node) > 1:
                        node.remove(x)
                        dt.nodes[newparent].append(x)
                        tree = canonicalize(dt.nodes[0])
                        dt = DrawTree(tree, senttok)  # kludge..
                    else:
                        error = ('ERROR: re-attaching only child creates'
                                 ' empty node %s; remove manually\n' % node)
                    break
    treestr = writediscbrackettree(tree, senttok, pretty=True).rstrip()
    link = ('<a href="/annotate/accept?%s">accept this tree</a>' %
            urlencode(dict(sentno=sentno, tree=treestr)))
    if error == '':
        session['actions'][REATTACH] += 1
        session.modified = True
    return Markup('%s\n\n%s%s\t%s' % (link, error,
                                      dt.text(unicodelines=True,
                                              html=True,
                                              funcsep='-',
                                              morphsep='/',
                                              nodeprops='t0'), treestr))
Ejemplo n.º 5
0
def test_treedraw():
    """Draw some trees. Only tests whether no exception occurs."""
    trees = '''(ROOT (S (ADV 0) (VVFIN 1) (NP (PDAT 2) (NN 3)) (PTKNEG 4) \
				(PP (APPRART 5) (NN 6) (NP (ART 7) (ADJA 8) (NN 9)))) ($. 10))
			(S (NP (NN 1) (EX 3)) (VP (VB 0) (JJ 2)))
			(S (VP (PDS 0) (ADV 3) (VVINF 4)) (PIS 2) (VMFIN 1))
			(top (du (comp 0) (smain (noun 1) (verb 2) (inf (verb 8) (inf \
				(adj 3) (pp (prep 4) (np (det 5) (noun 6))) (part 7) (verb 9) \
				(pp (prep 10) (np (det 11) (noun 12) (pp (prep 13) (mwu \
				(noun 14) (noun 15))))))))) (punct 16))
			(top (smain (noun 0) (verb 1) (inf (verb 5) (inf (np (det 2) \
				(adj 3) (noun 4)) (verb 6) (pp (prep 7) (noun 8))))) (punct 9))
			(top (smain (noun 0) (verb 1) (noun 2) (inf (adv 3) (verb 4))) \
				(punct 5))
			(top (punct 5) (du (smain (noun 0) (verb 1) (ppart (np (det 2) \
				(noun 3)) (verb 4))) (conj (sv1 (conj (noun 6) (vg 7) (np \
				(det 8) (noun 9))) (verb 10) (noun 11) (part 12)) (vg 13) \
				(sv1 (verb 14) (ti (comp 19) (inf (np (conj (det 15) (vg 16) \
				(det 17)) (noun 18)) (verb 20)))))) (punct 21))
			(top (punct 10) (punct 16) (punct 18) (smain (np (det 0) (noun 1) \
				(pp (prep 2) (np (det 3) (noun 4)))) (verb 5) (adv 6) (np \
				(noun 7) (noun 8)) (part 9) (np (det 11) (noun 12) (pp \
				(prep 13) (np (det 14) (noun 15)))) (conj (vg 20) (ppres \
				(adj 17) (pp (prep 22) (np (det 23) (adj 24) (noun 25)))) \
				(ppres (adj 19)) (ppres (adj 21)))) (punct 26))
			(top (punct 10) (punct 11) (punct 16) (smain (np (det 0) \
				(noun 1)) (verb 2) (np (det 3) (noun 4)) (adv 5) (du (cp \
				(comp 6) (ssub (noun 7) (verb 8) (inf (verb 9)))) (du \
				(smain (noun 12) (verb 13) (adv 14) (part 15)) (noun 17)))) \
				(punct 18) (punct 19))
			(top (smain (noun 0) (verb 1) (inf (verb 8) (inf (verb 9) (inf \
				(adv 2) (pp (prep 3) (noun 4)) (pp (prep 5) (np (det 6) \
				(noun 7))) (verb 10))))) (punct 11))
			(top (smain (noun 0) (verb 1) (pp (prep 2) (np (det 3) (adj 4) \
				(noun 5) (rel (noun 6) (ssub (noun 7) (verb 10) (ppart \
				(adj 8) (part 9) (verb 11))))))) (punct 12))
			(top (smain (np (det 0) (noun 1)) (verb 2) (ap (adv 3) (num 4) \
				(cp (comp 5) (np (det 6) (adj 7) (noun 8) (rel (noun 9) (ssub \
				(noun 10) (verb 11) (pp (prep 12) (np (det 13) (adj 14) \
				(adj 15) (noun 16))))))))) (punct 17))
			(top (smain (np (det 0) (noun 1)) (verb 2) (adv 3) (pp (prep 4) \
				(np (det 5) (noun 6)) (part 7))) (punct 8))
			(top (punct 7) (conj (smain (noun 0) (verb 1) (np (det 2) \
				(noun 3)) (pp (prep 4) (np (det 5) (noun 6)))) (smain \
				(verb 8) (np (det 9) (num 10) (noun 11)) (part 12)) (vg 13) \
				(smain (verb 14) (noun 15) (pp (prep 16) (np (det 17) \
				(noun 18) (pp (prep 19) (np (det 20) (noun 21))))))) \
				(punct 22))
			(top (smain (np (det 0) (noun 1) (rel (noun 2) (ssub (np (num 3) \
				(noun 4)) (adj 5) (verb 6)))) (verb 7) (ppart (verb 8) (pp \
				(prep 9) (noun 10)))) (punct 11))
			(top (conj (sv1 (np (det 0) (noun 1)) (verb 2) (ppart (verb 3))) \
				(vg 4) (sv1 (verb 5) (pp (prep 6) (np (det 7) (adj 8) \
				(noun 9))))) (punct 10))
			(top (smain (noun 0) (verb 1) (np (det 2) (noun 3)) (inf (adj 4) \
				(verb 5) (cp (comp 6) (ssub (noun 7) (adv 8) (verb 10) (ap \
				(num 9) (cp (comp 11) (np (det 12) (adj 13) (noun 14) (pp \
				(prep 15) (conj (np (det 16) (noun 17)) (vg 18) (np \
				(noun 19))))))))))) (punct 20))
			(top (punct 8) (smain (noun 0) (verb 1) (inf (verb 5) \
				(inf (verb 6) (conj (inf (pp (prep 2) (np (det 3) (noun 4))) \
				(verb 7)) (inf (verb 9)) (vg 10) (inf (verb 11)))))) \
				(punct 12))
			(top (smain (verb 2) (noun 3) (adv 4) (ppart (np (det 0) \
				(noun 1)) (verb 5))) (punct 6))
			(top (conj (smain (np (det 0) (noun 1)) (verb 2) (adj 3) (pp \
				(prep 4) (np (det 5) (noun 6)))) (vg 7) (smain (np (det 8) \
				(noun 9) (pp (prep 10) (np (det 11) (noun 12)))) (verb 13) \
				(pp (prep 14) (np (det 15) (noun 16))))) (punct 17))
			(top (conj (smain (noun 0) (verb 1) (inf (ppart (np (noun 2) \
				(noun 3)) (verb 4)) (verb 5))) (vg 6) (smain (noun 7) \
				(inf (ppart (np (det 8) (noun 9)))))) (punct 10))
			(A (B1 (t 6) (t 13)) (B2 (t 3) (t 7) (t 10))  (B3 (t 1) \
				(t 9) (t 11) (t 14) (t 16)) (B4 (t 0) (t 5) (t 8)))
			(A (B1 6 13) (B2 3 7 10)  (B3 1 \
				9 11 14 16) (B4 0 5 8))
			(VP (VB 0) (PRT 2))
			(VP (VP 0 3) (NP (PRP 1) (NN 2)))
			(ROOT (S (VP_2 (PP (APPR 0) (ART 1) (NN 2) (PP (APPR 3) (ART 4) \
				(ADJA 5) (NN 6))) (ADJD 10) (PP (APPR 11) (NN 12)) (VVPP 13)) \
				(VAFIN 7) (NP (ART 8) (NN 9))) ($. 14))'''
    sents = '''Leider stehen diese Fragen nicht im Vordergrund der \
				augenblicklichen Diskussion .
			is Mary happy there
			das muss man jetzt machen
			Of ze had gewoon met haar vriendinnen rond kunnen slenteren in de \
				buurt van Trafalgar Square .
			Het had een prachtige dag kunnen zijn in Londen .
			Cathy zag hen wild zwaaien .
			Het was een spel geworden , zij en haar vriendinnen kozen iemand \
				uit en probeerden zijn of haar nationaliteit te raden .
			Elk jaar in het hoogseizoen trokken daar massa's toeristen \
				voorbij , hun fototoestel in de aanslag , pratend , gillend \
				en lachend in de vreemdste talen .
			Haar vader stak zijn duim omhoog alsof hij wilde zeggen : " het \
				komt wel goed , joch " .
			Ze hadden languit naast elkaar op de strandstoelen kunnen gaan \
				liggen .
			Het hoorde bij de warme zomerdag die ze ginds achter had gelaten .
			De oprijlaan was niet meer dan een hobbelige zandstrook die zich \
				voortslingerde tussen de hoge grijze boomstammen .
			Haar moeder kleefde bijna tegen het autoraampje aan .
			Ze veegde de tranen uit haar ooghoeken , tilde haar twee koffers \
				op en begaf zich in de richting van het landhuis .
			Het meisje dat vijf keer juist raadde werd getrakteerd op ijs .
			Haar neus werd platgedrukt en leek op een jonge champignon .
			Cathy zag de BMW langzaam verdwijnen tot hij niet meer was dan \
				een zilveren schijnsel tussen de bomen en struiken .
			Ze had met haar moeder kunnen gaan winkelen , zwemmen of \
				terrassen .
			Dat werkwoord had ze zelf uitgevonden .
			De middagzon hing klein tussen de takken en de schaduwen van de \
				wolken drentelden over het gras .
			Zij zou mams rug ingewreven hebben en mam de hare .
			0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
			0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
			0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
			0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
			Mit einer Messe in der Sixtinischen Kapelle ist das Konklave \
				offiziell zu Ende gegangen .'''
    from discodop.tree import DrawTree
    trees = [Tree(a) for a in trees.splitlines()]
    sents = [a.split() for a in sents.splitlines()]
    sents.extend([['Wake', None, 'up'], [None, 'your', 'friend', None]])
    for n, (tree, sent) in enumerate(zip(trees, sents)):
        drawtree = DrawTree(tree, sent)
        print('\ntree, sent',
              n,
              tree,
              ' '.join('...' if a is None else a for a in sent),
              repr(drawtree),
              sep='\n')
        try:
            print(drawtree.text(unicodelines=True, ansi=True), sep='\n')
        except (UnicodeDecodeError, UnicodeEncodeError):
            print(drawtree.text(unicodelines=False, ansi=False), sep='\n')
Ejemplo n.º 6
0
def test_treedraw():
	"""Draw some trees. Only tests whether no exception occurs."""
	trees = '''(ROOT (S (ADV 0) (VVFIN 1) (NP (PDAT 2) (NN 3)) (PTKNEG 4) \
				(PP (APPRART 5) (NN 6) (NP (ART 7) (ADJA 8) (NN 9)))) ($. 10))
			(S (NP (NN 1) (EX 3)) (VP (VB 0) (JJ 2)))
			(S (VP (PDS 0) (ADV 3) (VVINF 4)) (PIS 2) (VMFIN 1))
			(top (du (comp 0) (smain (noun 1) (verb 2) (inf (verb 8) (inf \
				(adj 3) (pp (prep 4) (np (det 5) (noun 6))) (part 7) (verb 9) \
				(pp (prep 10) (np (det 11) (noun 12) (pp (prep 13) (mwu \
				(noun 14) (noun 15))))))))) (punct 16))
			(top (smain (noun 0) (verb 1) (inf (verb 5) (inf (np (det 2) \
				(adj 3) (noun 4)) (verb 6) (pp (prep 7) (noun 8))))) (punct 9))
			(top (smain (noun 0) (verb 1) (noun 2) (inf (adv 3) (verb 4))) \
				(punct 5))
			(top (punct 5) (du (smain (noun 0) (verb 1) (ppart (np (det 2) \
				(noun 3)) (verb 4))) (conj (sv1 (conj (noun 6) (vg 7) (np \
				(det 8) (noun 9))) (verb 10) (noun 11) (part 12)) (vg 13) \
				(sv1 (verb 14) (ti (comp 19) (inf (np (conj (det 15) (vg 16) \
				(det 17)) (noun 18)) (verb 20)))))) (punct 21))
			(top (punct 10) (punct 16) (punct 18) (smain (np (det 0) (noun 1) \
				(pp (prep 2) (np (det 3) (noun 4)))) (verb 5) (adv 6) (np \
				(noun 7) (noun 8)) (part 9) (np (det 11) (noun 12) (pp \
				(prep 13) (np (det 14) (noun 15)))) (conj (vg 20) (ppres \
				(adj 17) (pp (prep 22) (np (det 23) (adj 24) (noun 25)))) \
				(ppres (adj 19)) (ppres (adj 21)))) (punct 26))
			(top (punct 10) (punct 11) (punct 16) (smain (np (det 0) \
				(noun 1)) (verb 2) (np (det 3) (noun 4)) (adv 5) (du (cp \
				(comp 6) (ssub (noun 7) (verb 8) (inf (verb 9)))) (du \
				(smain (noun 12) (verb 13) (adv 14) (part 15)) (noun 17)))) \
				(punct 18) (punct 19))
			(top (smain (noun 0) (verb 1) (inf (verb 8) (inf (verb 9) (inf \
				(adv 2) (pp (prep 3) (noun 4)) (pp (prep 5) (np (det 6) \
				(noun 7))) (verb 10))))) (punct 11))
			(top (smain (noun 0) (verb 1) (pp (prep 2) (np (det 3) (adj 4) \
				(noun 5) (rel (noun 6) (ssub (noun 7) (verb 10) (ppart \
				(adj 8) (part 9) (verb 11))))))) (punct 12))
			(top (smain (np (det 0) (noun 1)) (verb 2) (ap (adv 3) (num 4) \
				(cp (comp 5) (np (det 6) (adj 7) (noun 8) (rel (noun 9) (ssub \
				(noun 10) (verb 11) (pp (prep 12) (np (det 13) (adj 14) \
				(adj 15) (noun 16))))))))) (punct 17))
			(top (smain (np (det 0) (noun 1)) (verb 2) (adv 3) (pp (prep 4) \
				(np (det 5) (noun 6)) (part 7))) (punct 8))
			(top (punct 7) (conj (smain (noun 0) (verb 1) (np (det 2) \
				(noun 3)) (pp (prep 4) (np (det 5) (noun 6)))) (smain \
				(verb 8) (np (det 9) (num 10) (noun 11)) (part 12)) (vg 13) \
				(smain (verb 14) (noun 15) (pp (prep 16) (np (det 17) \
				(noun 18) (pp (prep 19) (np (det 20) (noun 21))))))) \
				(punct 22))
			(top (smain (np (det 0) (noun 1) (rel (noun 2) (ssub (np (num 3) \
				(noun 4)) (adj 5) (verb 6)))) (verb 7) (ppart (verb 8) (pp \
				(prep 9) (noun 10)))) (punct 11))
			(top (conj (sv1 (np (det 0) (noun 1)) (verb 2) (ppart (verb 3))) \
				(vg 4) (sv1 (verb 5) (pp (prep 6) (np (det 7) (adj 8) \
				(noun 9))))) (punct 10))
			(top (smain (noun 0) (verb 1) (np (det 2) (noun 3)) (inf (adj 4) \
				(verb 5) (cp (comp 6) (ssub (noun 7) (adv 8) (verb 10) (ap \
				(num 9) (cp (comp 11) (np (det 12) (adj 13) (noun 14) (pp \
				(prep 15) (conj (np (det 16) (noun 17)) (vg 18) (np \
				(noun 19))))))))))) (punct 20))
			(top (punct 8) (smain (noun 0) (verb 1) (inf (verb 5) \
				(inf (verb 6) (conj (inf (pp (prep 2) (np (det 3) (noun 4))) \
				(verb 7)) (inf (verb 9)) (vg 10) (inf (verb 11)))))) \
				(punct 12))
			(top (smain (verb 2) (noun 3) (adv 4) (ppart (np (det 0) \
				(noun 1)) (verb 5))) (punct 6))
			(top (conj (smain (np (det 0) (noun 1)) (verb 2) (adj 3) (pp \
				(prep 4) (np (det 5) (noun 6)))) (vg 7) (smain (np (det 8) \
				(noun 9) (pp (prep 10) (np (det 11) (noun 12)))) (verb 13) \
				(pp (prep 14) (np (det 15) (noun 16))))) (punct 17))
			(top (conj (smain (noun 0) (verb 1) (inf (ppart (np (noun 2) \
				(noun 3)) (verb 4)) (verb 5))) (vg 6) (smain (noun 7) \
				(inf (ppart (np (det 8) (noun 9)))))) (punct 10))
			(A (B1 (t 6) (t 13)) (B2 (t 3) (t 7) (t 10))  (B3 (t 1) \
				(t 9) (t 11) (t 14) (t 16)) (B4 (t 0) (t 5) (t 8)))
			(A (B1 6 13) (B2 3 7 10)  (B3 1 \
				9 11 14 16) (B4 0 5 8))
			(VP (VB 0) (PRT 2))
			(VP (VP 0 3) (NP (PRP 1) (NN 2)))
			(ROOT (S (VP_2 (PP (APPR 0) (ART 1) (NN 2) (PP (APPR 3) (ART 4) \
				(ADJA 5) (NN 6))) (ADJD 10) (PP (APPR 11) (NN 12)) (VVPP 13)) \
				(VAFIN 7) (NP (ART 8) (NN 9))) ($. 14))'''
	sents = '''Leider stehen diese Fragen nicht im Vordergrund der \
				augenblicklichen Diskussion .
			is Mary happy there
			das muss man jetzt machen
			Of ze had gewoon met haar vriendinnen rond kunnen slenteren in de \
				buurt van Trafalgar Square .
			Het had een prachtige dag kunnen zijn in Londen .
			Cathy zag hen wild zwaaien .
			Het was een spel geworden , zij en haar vriendinnen kozen iemand \
				uit en probeerden zijn of haar nationaliteit te raden .
			Elk jaar in het hoogseizoen trokken daar massa's toeristen \
				voorbij , hun fototoestel in de aanslag , pratend , gillend \
				en lachend in de vreemdste talen .
			Haar vader stak zijn duim omhoog alsof hij wilde zeggen : " het \
				komt wel goed , joch " .
			Ze hadden languit naast elkaar op de strandstoelen kunnen gaan \
				liggen .
			Het hoorde bij de warme zomerdag die ze ginds achter had gelaten .
			De oprijlaan was niet meer dan een hobbelige zandstrook die zich \
				voortslingerde tussen de hoge grijze boomstammen .
			Haar moeder kleefde bijna tegen het autoraampje aan .
			Ze veegde de tranen uit haar ooghoeken , tilde haar twee koffers \
				op en begaf zich in de richting van het landhuis .
			Het meisje dat vijf keer juist raadde werd getrakteerd op ijs .
			Haar neus werd platgedrukt en leek op een jonge champignon .
			Cathy zag de BMW langzaam verdwijnen tot hij niet meer was dan \
				een zilveren schijnsel tussen de bomen en struiken .
			Ze had met haar moeder kunnen gaan winkelen , zwemmen of \
				terrassen .
			Dat werkwoord had ze zelf uitgevonden .
			De middagzon hing klein tussen de takken en de schaduwen van de \
				wolken drentelden over het gras .
			Zij zou mams rug ingewreven hebben en mam de hare .
			0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
			0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
			0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
			0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
			Mit einer Messe in der Sixtinischen Kapelle ist das Konklave \
				offiziell zu Ende gegangen .'''
	from discodop.tree import DrawTree
	trees = [Tree(a) for a in trees.splitlines()]
	sents = [a.split() for a in sents.splitlines()]
	sents.extend([['Wake', None, 'up'],
		[None, 'your', 'friend', None]])
	for n, (tree, sent) in enumerate(zip(trees, sents)):
		drawtree = DrawTree(tree, sent)
		print('\ntree, sent', n, tree,
				' '.join('...' if a is None else a for a in sent),
				repr(drawtree),
				sep='\n')
		try:
			print(drawtree.text(unicodelines=True, ansi=True), sep='\n')
		except (UnicodeDecodeError, UnicodeEncodeError):
			print(drawtree.text(unicodelines=False, ansi=False), sep='\n')