code: def sanitize_ltsv_label(label, replacement_text=""):
      
  
      validate_null_string(label, error_msg="label is empty")
  
      return __RE_INVALID_LTSV_LABEL.sub(replacement_text, preprocess(label))
docs: Replace all of the symbols in text.
  
      :param str label: Input text.
      :param str replacement_text: Replacement text.
      :return: A replacement string.
      :rtype: str