def read_elp(self):
self.tree = PrefixTree()
self.pronunciations = {}
words = list(csv.DictReader(open(paths.elp)))
for i, x in enumerate(words):
pron = self.elp2cmu.translate(x['Pron'])
if x[self.frequency_field] not in ['0', 'NULL']:
self.tree.insert(tuple(pron + ['#']),
float(x[self.frequency_field]), x['Word'])
self.pronunciations[x['Word']] = pron
self.tree.calculate_probs()
