code: def g2p(text):
      """Convert grapheme to phoneme."""
      tokens = filter(lambda s: s != " ", f_g2p(text))
      return " ".join(tokens)
  
file_path: espnet/egs/vcc20/tts1_en_zh/local/clean_text_mailabs.py
imports: import argparse
  import codecs
  import json
  import os
  import nltk
  from tacotron_cleaner.cleaners import custom_english_cleaners
label_desc: Use image node_id 1 for calling a global function with example usage: g2p(text) and returns: str