code: def line_stats(example):
      """Calculates mean and max line length of file."""
      line_lengths = [
          len(line) for line in example["content"].splitlines()
      ]
      return {
          "line_mean": np.mean(line_lengths),
          "line_max": max(line_lengths),
      }
  
imports: import gzip
  import json
  import multiprocessing
  import os
  import re
  import shutil
  import time
  from pathlib import Path
  import numpy
  from arguments import PreprocessingArguments
  from datasets import load_dataset
  from huggingface_hub.utils import insecure_hashlib
  from minhash_deduplication import deduplicate_dataset
  from transformers import AutoTokenizer, HfArgumentParser
label_desc: Use image node_id 2 for calling a global function with example usage: line_stats(example) and returns: dict