code: def cached_path(
      url_or_filename: str, cache_dir: Union[str, Path]
  ) -> Path:
      """Download the given path and return the local path from the cache.
  
      Given something that might be a URL (or might be a local path),
      determine which. If it's a URL, download the file and cache it, and
      return the path to the cached file. If it's already a local path,
      make sure the file exists and then return the path.
      """
      cache_dir = Path(cache_dir)
  
      dataset_cache = (
          flair.cache_root / cache_dir
          if flair.cache_root not in cache_dir.parents
          else cache_dir
      )
  
      parsed = urlparse(url_or_filename)
  
      if parsed.scheme in ("http", "https"):
          # URL, so get it from the cache (downloading if necessary)
          return get_from_cache(url_or_filename, dataset_cache)
      elif parsed.scheme == "s3":
          return download_s3_to_path(parsed.netloc, dataset_cache)
      elif len(parsed.scheme) < 2 and Path(url_or_filename).exists():
          # File, and it exists.
          return Path(url_or_filename)
      elif len(parsed.scheme) < 2:
          # File, but it doesn't exist.
          raise FileNotFoundError(f"file {url_or_filename} not found")
      else:
          # Something unknown
          raise ValueError(
              f"unable to parse {url_or_filename} as a URL or as a local path"
          )
  
imports: import base64
  import functools
  import io
  import logging
  import mmap
  import os
  import re
  import shutil
  import tempfile
  import typing
  import warnings
  import zipfile
  from pathlib import Path
  from typing import Optional, Sequence, Tuple, Union, cast
  from urllib.parse import urlparse
  import boto3
  import requests
  import torch
  from botocore import UNSIGNED
  from botocore.config import Config
  from tqdm import tqdm
  import flair
label_desc: Use image node_id 5 for calling a global function with example usage: cached_path(url_or_filename, cache_dir) and returns: get_from_cache, download_s3_to_path, Path