old_contents: from django.conf import settings
  from django.core.files.storage import FileSystemStorage, get_storage_class
  # from ixc_whitenoise.storage import HashedMediaMixin
  from storages.backends.s3boto3 import S3Boto3Storage
  
  
  # MIXINS ######################################################################
  
  
  class S3MediaLocationMixin(object):
      """
      Pass `settings.MEDIA_URL` (stripped of leading and trailing slashes) as the
      `location` argument to the init method.
      """
  
      def __init__(self, *args, **kwargs):
          kwargs.setdefault('location', settings.MEDIA_URL.strip('/'))
          super(S3MediaLocationMixin, self).__init__(*args, **kwargs)
  
  
  class S3PrivateMixin(object):
      """
      Enable querystring auth and use `private` as default ACL.
      """
  
      def __init__(self, *args, **kwargs):
          kwargs.setdefault('default_acl', 'private')
          kwargs.setdefault('querystring_auth', True)
          super(S3PrivateMixin, self).__init__(*args, **kwargs)
  
  
  class S3PublicMixin(object):
      """
      Disable querystring auth and use `public-read` as default ACL.
      """
  
      def __init__(self, *args, **kwargs):
          kwargs.setdefault('default_acl', 'public-read')
          kwargs.setdefault('querystring_auth', False)
          super(S3PublicMixin, self).__init__(*args, **kwargs)
  
  
  class S3StaticLocationMixin(object):
      """
      Pass `settings.STATIC_URL` (stripped of leading and trailing slashes) as
      the `location` argument to the init method.
      """
  
      def __init__(self, *args, **kwargs):
          kwargs.setdefault('location', settings.STATIC_URL.strip('/'))
          super(S3StaticLocationMixin, self).__init__(*args, **kwargs)
  
  
  # STORAGE CLASSES #############################################################
  
  
  class S3DefaultStorage(
          # HashedMediaMixin,
          S3MediaLocationMixin,
          S3PrivateMixin,
          S3Boto3Storage):
  
      pass
  
  
  class S3PublicStorage(
          # HashedMediaMixin,
          S3MediaLocationMixin,
          S3PublicMixin,
          S3Boto3Storage):
  
      pass
  
  
  default_storage = get_storage_class(settings.DEFAULT_FILE_STORAGE)()
  
new_contents: from django.conf import settings
  from django.core.files.storage import FileSystemStorage, get_storage_class
  # from ixc_whitenoise.storage import HashedMediaMixin
  from storages.backends.s3boto3 import S3Boto3Storage
  
  
  # MIXINS ######################################################################
  
  
  class S3MediaLocationMixin(object):
      """
      Pass `settings.MEDIA_URL` (stripped of leading and trailing slashes) as the
      `location` argument to the init method.
      """
  
      def __init__(self, *args, **kwargs):
          kwargs.setdefault('location', settings.MEDIA_URL.strip('/'))
          super(S3MediaLocationMixin, self).__init__(*args, **kwargs)
  
  
  class S3PrivateMixin(object):
      """
      Enable querystring auth and use `private` as default ACL.
      """
  
      def __init__(self, *args, **kwargs):
          kwargs.setdefault('default_acl', 'private')
          kwargs.setdefault('querystring_auth', True)
          super(S3PrivateMixin, self).__init__(*args, **kwargs)
  
  
  class S3PublicMixin(object):
      """
      Disable querystring auth and use `public-read` as default ACL.
      """
  
      def __init__(self, *args, **kwargs):
          kwargs.setdefault('default_acl', 'public-read')
          kwargs.setdefault('querystring_auth', False)
          super(S3PublicMixin, self).__init__(*args, **kwargs)
  
  
  class S3StaticLocationMixin(object):
      """
      Pass `settings.STATIC_URL` (stripped of leading and trailing slashes) as
      the `location` argument to the init method.
      """
  
      def __init__(self, *args, **kwargs):
          kwargs.setdefault('location', settings.STATIC_URL.strip('/'))
          super(S3StaticLocationMixin, self).__init__(*args, **kwargs)
  
  
  # STORAGE CLASSES #############################################################
  
  
  class S3DefaultStorage(
          # HashedMediaMixin,
          S3MediaLocationMixin,
          S3PrivateMixin,
          S3Boto3Storage):
  
      pass
  
  
  class S3PublicStorage(
          # HashedMediaMixin,
          S3MediaLocationMixin,
          S3PublicMixin,
          S3Boto3Storage):
  
      pass
  
subject: Remove unused `default_storage` module attribute