How to use the epitran.flite.Flite function in epitran

def english_g2p(self, text):
        text = self.normalize(text)
        try:
            arpa_text = subprocess.check_output(['t2p', '"{}"'.format(text)])
            arpa_text = arpa_text.decode('utf-8')
        except OSError:
            logging.warning('t2p (from flite) is not installed.')
            arpa_text = ''
        except subprocess.CalledProcessError:
            logging.warning('Non-zero exit status from t2p.')
            arpa_text = ''
        return self.arpa_to_ipa(arpa_text)


class FliteLexLookup(Flite):
    """Flite G2P using lex_lookup."""

    def arpa_text_to_list(self, arpa_text):
        return arpa_text[1:-1].split(' ')

    def english_g2p(self, text):
        text = self.normalize(text).lower()
        try:
            arpa_text = subprocess.check_output(['lex_lookup', text])
            arpa_text = arpa_text.decode('utf-8')
        except OSError:
            logging.warning('lex_lookup (from flite) is not installed.')
            arpa_text = ''
        except subprocess.CalledProcessError:
            logging.warning('Non-zero exit status from lex_lookup.')
            arpa_text = ''

for p, o in zip(phonsegs, orth):
                    tuples.append(('L', case, o, p, to_vectors(p)))
                word = word[len(span):]
            else:
                span = word[0]
                span = self.puncnorm.norm(span) if normpunc else span
                cat, case = cat_and_cap(span)
                cat = 'P' if normpunc and cat in self.puncnorm else cat
                phon = ''
                vecs = to_vectors(phon)
                tuples.append((cat, case, span, phon, vecs))
                word = word[1:]
        return tuples


class FliteT2P(Flite):
    """Flite G2P using t2p."""

    def english_g2p(self, text):
        text = self.normalize(text)
        try:
            arpa_text = subprocess.check_output(['t2p', '"{}"'.format(text)])
            arpa_text = arpa_text.decode('utf-8')
        except OSError:
            logging.warning('t2p (from flite) is not installed.')
            arpa_text = ''
        except subprocess.CalledProcessError:
            logging.warning('Non-zero exit status from t2p.')
            arpa_text = ''
        return self.arpa_to_ipa(arpa_text)