code: def download_url(
      url: str,
      root: Union[str, pathlib.Path],
      filename: Optional[Union[str, pathlib.Path]] = None,
      md5: Optional[str] = None,
      max_redirect_hops: int = 3,
  ) -> None:
      """Download a file from a url and place it in root.
  
      Args:
          url (str): URL to download file from
          root (str): Directory to place downloaded file in
          filename (str, optional): Name to save the file under. If None, use the basename of the URL
          md5 (str, optional): MD5 checksum of the download. If None, do not check
          max_redirect_hops (int, optional): Maximum number of redirect hops allowed
      """
      root = os.path.expanduser(root)
      if not filename:
          filename = os.path.basename(url)
      fpath = os.fspath(os.path.join(root, filename))
  
      os.makedirs(root, exist_ok=True)
  
      # check if file is already present locally
      if check_integrity(fpath, md5):
          print("Using downloaded and verified file: " + fpath)
          return
  
      if _is_remote_location_available():
          _download_file_from_remote_location(fpath, url)
      else:
          # expand redirect chain if needed
          url = _get_redirect_url(url, max_hops=max_redirect_hops)
  
          # check if file is located on Google Drive
          file_id = _get_google_drive_file_id(url)
          if file_id is not None:
              return download_file_from_google_drive(
                  file_id, root, filename, md5
              )
  
          # download the file
          try:
              print("Downloading " + url + " to " + fpath)
              _urlretrieve(url, fpath)
          except (urllib.error.URLError, OSError) as e:  # type: ignore[attr-defined]
              if url[:5] == "https":
                  url = url.replace("https:", "http:")
                  print(
                      "Failed download. Trying https -> http instead. Downloading "
                      + url
                      + " to "
                      + fpath
                  )
                  _urlretrieve(url, fpath)
              else:
                  raise e
  
      # check integrity of downloaded file
      if not check_integrity(fpath, md5):
          raise RuntimeError("File not found or corrupted.")
  
imports: import bz2
  import contextlib
  import gzip
  import hashlib
  import itertools
  import lzma
  import os
  import os.path
  import pathlib
  import re
  import sys
  import tarfile
  import urllib
  import urllib.error
  import urllib.request
  import warnings
  import zipfile
  from typing import Any, Callable, Dict, IO, Iterable, Iterator, List, Optional, Tuple, TypeVar, Union
  from urllib.parse import urlparse
  import numpy
  import requests
  import torch
  from torch.utils.model_zoo import tqdm
  from .._internally_replaced_utils import _download_file_from_remote_location, _is_remote_location_available
label_desc: Use image node_id 8 for calling a global function with example usage: download_url(url, root, filename, md5, max_redirect_hops) and returns: download_file_from_google_drive