code: def retry(
      func=None,
      exception=Exception,
      n_tries=5,
      delay=5,
      backoff=1,
      logger=False,
  ):
      """Retry decorator with exponential backoff.
  
      Parameters
      ----------
      func : typing.Callable, optional
          Callable on which the decorator is applied, by default None
      exception : Exception or tuple of Exceptions, optional
          Exception(s) that invoke retry, by default Exception
      n_tries : int, optional
          Number of tries before giving up, by default 5
      delay : int, optional
          Initial delay between retries in seconds, by default 5
      backoff : int, optional
          Backoff multiplier e.g. value of 2 will double the delay, by default 1
      logger : bool, optional
          Option to log or print, by default False
  
      Returns
      -------
      typing.Callable
          Decorated callable that calls itself when exception(s) occur.
  
      Examples
      --------
      >>> import random
      >>> @retry(exception=Exception, n_tries=4)
      ... def test_random(text):
      ...    x = random.random()
      ...    if x < 0.5:
      ...        raise Exception("Fail")
      ...    else:
      ...        print("Success: ", text)
      >>> test_random("It works!")
      """
  
      if func is None:
          return partial(
              retry,
              exception=exception,
              n_tries=n_tries,
              delay=delay,
              backoff=backoff,
              logger=logger,
          )
  
      @wraps(func)
      def wrapper(*args, **kwargs):
          ntries, ndelay = n_tries, delay
  
          while ntries > 1:
              try:
                  return func(*args, **kwargs)
              except exception as e:
                  msg = f"{str(e)}, Retrying in {ndelay} seconds..."
                  if logger:
                      logging.warning(msg)
                  else:
                      print(msg)
                  time.sleep(ndelay)
                  ntries -= 1
                  ndelay *= backoff
  
          return func(*args, **kwargs)
  
      return wrapper
  
imports: import collections
  import collections.abc
  import logging
  import os
  import random
  import sys
  import tempfile
  import time
  from functools import partial, wraps
  from typing import Tuple
  import numpy
  import pkg_resources
  import torch
  import torch.multiprocessing
  from iopath.common.file_io import g_pathmgr
  from scipy.sparse import csr_matrix
  from vissl.utils.extract_features_utils import ExtractedFeaturesLoader
label_desc: Use image node_id 18 for calling a global function with example usage: retry(func, exception, n_tries, delay, backoff, logger) and returns: wrapper, partial, func, func