.. Copyright (C) 2001-2020 NLTK Project
.. For license information, see LICENSE.TXT

===========
Collections
===========

    >>> import nltk
    >>> from nltk.collections import *

Trie
----

Trie can be pickled:

    >>> import pickle
    >>> trie = nltk.collections.Trie(['a'])
    >>> s = pickle.dumps(trie)
    >>> pickle.loads(s)
    {'a': {True: None}}