code: def load_lexicon(fn):
      lines = open(fn, "r").readlines()
      lines = [l.lower().strip().split("\t") for l in lines]
      return dict(lines)
  
file_path: underthesea/underthesea/pipeline/say/viettts_/nat/text2mel.py
imports: import pickle
  from argparse import ArgumentParser
  from pathlib import Path
  import haiku
  import jax
  import jax.numpy
  import matplotlib.pyplot
  import numpy
  from .config import FLAGS, DurationInput
  from .data_loader import load_phonemes_set
  from .model import AcousticModel, DurationModel
label_desc: Use image node_id 1 for calling a global function with example usage: load_lexicon(fn) and returns: dict