code: def count_digit(s):
      return sum(1 for c in s if c.isdigit())
  
file_path: lightseq/examples/inference/python/export/huggingface/hf_mt5_export.py
imports: import os
  from collections import OrderedDict
  import tensorflow
  import h5py
  import numpy
  from operator import attrgetter
  from lightseq.training.ops.pytorch.export import gather_token_embedding, fill_pb_layer
  from export.proto.mt5_pb2 import MT5
  from transformers import MT5ForConditionalGeneration
  from export.util import parse_args
label_desc: Use image node_id 3 for calling a global function with example usage: count_digit(s) and returns: sum