class_docstr: Downloader from AWS S3 buckets
      
class_docstr_tok: ["Downloader","from","AWS","S3","buckets"]
code: def __init__(self, **kwargs):
      super(S3Downloader, self).__init__(**kwargs)
      self._bucket = None
  
imports: import re
  from urllib.parse import urlsplit, unquote
  from ..utils import auto_repr, ensure_dict_from_str
  from ..dochelpers import borrowkwargs
  from ..support.network import get_url_straight_filename, iso8601_to_epoch, rfc2822_to_epoch
  from .base import Authenticator
  from .base import BaseDownloader, DownloaderSession
  from ..support.exceptions import AccessPermissionExpiredError, CapturedException, TargetFileAbsent
  from ..support.s3 import Key, OrdinaryCallingFormat, S3ResponseError, boto, get_bucket, try_multiple_dec_s3
  from ..support.status import FileStatus
  import logging
  from logging import getLogger
label_desc: Use image node_id 1 to create a new S3Downloader object from inherited base classes: BaseDownloader with example: obj = S3Downloader()