code: def get_file(
      filename: str,
      url: Union[str, List[str]],
      path: Optional[str] = None,
      extract: bool = False,
      verbose: bool = False,
  ) -> str:
      """
      Downloads a file from a URL if it not already in the cache. The file at indicated by `url` is downloaded to the
      path `path` (default is ~/.art/data). and given the name `filename`. Files in tar, tar.gz, tar.bz, and zip formats
      can also be extracted. This is a simplified version of the function with the same name in Keras.
  
      :param filename: Name of the file.
      :param url: Download URL.
      :param path: Folder to store the download. If not specified, `~/.art/data` is used instead.
      :param extract: If true, tries to extract the archive.
      :param verbose: If true, print download progress bar.
      :return: Path to the downloaded file.
      """
      if isinstance(url, str):
          url_list = [url]
      else:
          url_list = url
  
      if path is None:
          path_ = os.path.expanduser(config.ART_DATA_PATH)
      else:
          path_ = os.path.expanduser(path)
      if not os.access(path_, os.W_OK):
          path_ = os.path.join("/tmp", ".art")
  
      if not os.path.exists(path_):
          os.makedirs(path_)
  
      if extract:
          extract_path = os.path.join(path_, filename)
          full_path = extract_path + ".tar.gz"
      else:
          full_path = os.path.join(path_, filename)
  
      # Determine if dataset needs downloading
      download = not os.path.exists(full_path)
  
      if download:
          logger.info("Downloading data from %s", url)
          try:
              for url_i in url_list:
                  try:
                      from six.moves.urllib.error import (
                          HTTPError,
                          URLError,
                      )
                      from six.moves.urllib.request import urlretrieve
  
                      # The following two lines should prevent occasionally occurring
                      # [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:847)
                      import ssl
  
                      ssl._create_default_https_context = (
                          ssl._create_unverified_context
                      )  # pylint: disable=W0212
  
                      if verbose:
                          with tqdm() as t_bar:
                              # pylint: disable=W0640
                              last_block = [0]
  
                              def progress_bar(
                                  blocks: int = 1,
                                  block_size: int = 1,
                                  total_size: Optional[int] = None,
                              ):
                                  """
                                  :param blocks: Number of blocks transferred so far [default: 1].
                                  :param block_size: Size of each block (in tqdm units) [default: 1].
                                  :param total_size: Total size (in tqdm units). If [default: None] or -1, remains
                                                     unchanged.
                                  """
                                  if total_size not in (None, -1):
                                      t_bar.total = total_size
                                  displayed = t_bar.update(
                                      (blocks - last_block[0])
                                      * block_size
                                  )
                                  last_block[0] = blocks
                                  return displayed
  
                              urlretrieve(
                                  url_i,
                                  full_path,
                                  reporthook=progress_bar,
                              )
                      else:
                          urlretrieve(url_i, full_path)
  
                  except HTTPError as exception:  # pragma: no cover
                      logger.error(url_i, exception)
                  except URLError as exception:  # pragma: no cover
                      logger.error(url_i, exception)
          except (Exception, KeyboardInterrupt):  # pragma: no cover
              if os.path.exists(full_path):
                  os.remove(full_path)
              raise
  
      if extract:
          if not os.path.exists(extract_path):
              _extract(full_path, path_)
          return extract_path
  
      return full_path
  
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  import logging
  import math
  import os
  import shutil
  import sys
  import tarfile
  import warnings
  import zipfile
  from functools import wraps
  from inspect import signature
  from typing import TYPE_CHECKING, Callable, List, Dict, Optional, Tuple, Union
  import numpy
  import six
  from scipy.special import gammainc
  from tqdm.auto import tqdm
  from art import config
label_desc: Use image node_id 36 for calling a global function with example usage: get_file(filename, url, path, extract, verbose) and returns: full_path, extract_path, displayed