class_docstr: Downloader from AWS S3 buckets
      
class_docstr_tok: ["Downloader","from","AWS","S3","buckets"]
code: def get_key_status(cls, key, dateformat="rfc2822"):
      return cls.get_status_from_headers(
          cls.get_key_headers(key, dateformat=dateformat)
      )
  
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 12 for calling the S3Downloader obj's underlying member method code with example usage: obj.get_key_status(cls, key, dateformat) and returns: cls