intransitive_dict = {}

def is_intrans(d):
    root = list(filter(lambda x: x.head==x, [t for t in d]))[0]
    if root.pos_ == 'VERB':
        children = list(filter(lambda x: x.root.dep_ == 'dobj' and x.root.head == root, d.noun_chunks))
        if not children:
            # intransitive case
            if root.lemma_ in intransitive_dict.keys(): intransitive_dict[root.lemma_] = intransitive_dict[root.lemma_] + 1
            else: intransitive_dict[root.lemma_] = 1
        elif len(children) == 1:
            # transitive case
            ...
        elif len(children) == 2:
            # bitransitive case
            ...