How to use the epitran.epihan.EpihanTraditional function in epitran

from epitran.flite import FliteLexLookup
from epitran.puncnorm import PuncNorm
from epitran.simple import SimpleEpitran
from epitran.xsampa import XSampa

if sys.version_info[0] == 3:
    def unicode(x):
        return x

logging.disable(logging.DEBUG)

class Epitran(object):
    """Unified interface for IPA transliteration/transcription"""
    special = {'eng-Latn': FliteLexLookup,
               'cmn-Hans': Epihan,
               'cmn-Hant': EpihanTraditional}

    def __init__(self, code, preproc=True, postproc=True, ligatures=False, cedict_file=None,
                 rev=False, rev_preproc=True, rev_postproc=True):
        """Construct Epitran transliteration/transcription object

        Args:
            code (str): ISO 639-3 plus "-" plus ISO 15924 code of the
                        language/script pair that should be loaded
            preproc (bool): apply preprocessors
            postproc (bool): apply prostprocessors
            ligatures (bool): use precomposed ligatures instead of standard IPA
            cedict_filename (str): path to file containing the CC-CEDict
                                   dictionary; relevant only for Chinese
            rev (boolean): if True, load reverse transliteration
            rev_preproc (bool): if True, apply preprocessor when reverse transliterating
            rev_postproc (bool): if True, apply postprocessor when reverse transliterating