':param root: The root directory for this corpus.
:param fileids: A list or regexp specifying the fileids in this corpus.
:param word_tokenizer: Tokenizer for breaking the text of Tweets into
smaller units, including but not limited to words.'

def __init__(self, root, fileids=None, word_tokenizer=TweetTokenizer(), encoding='utf8'):

    CorpusReader.__init__(self, root, fileids, encoding)
    for path in self.abspaths(self._fileids):
        if isinstance(path, ZipFilePathPointer):
            pass
        elif (os.path.getsize(path) == 0):
            raise ValueError('File    {}    is    empty'.format(path))
    'Check    that    all    user-created    corpus    files    are    non-empty.'
    self._word_tokenizer = word_tokenizer
