code: def _symbols_to_sequence(symbols):
      return [
          _symbol_to_id[s] for s in symbols if _should_keep_symbol(s)
      ]
  
file_path: fairseq/examples/textless_nlp/gslm/unit2speech/tacotron2/text.py
imports: import numpy
  import re
  from .None import cleaners
  from .symbols import symbols
label_desc: Use image node_id 7 for calling a global function with example usage: _symbols_to_sequence(symbols) and returns: unknown