old_contents: """
  Views dedicated to rendering xblocks.
  """
  from __future__ import absolute_import
  
  import logging
  import mimetypes
  
  from xblock.core import XBlock
  
  from django.conf import settings
  from django.http import Http404, HttpResponse
  
  
  log = logging.getLogger(__name__)
  
  
  def xblock_resource(request, block_type, uri):  # pylint: disable=unused-argument
      """
      Return a package resource for the specified XBlock.
      """
      try:
          xblock_class = XBlock.load_class(block_type, settings.XBLOCK_SELECT_FUNCTION)
          content = xblock_class.open_local_resource(uri)
      except IOError:
          log.info('Failed to load xblock resource', exc_info=True)
          raise Http404
      except Exception:  # pylint: disable=broad-except
          log.error('Failed to load xblock resource', exc_info=True)
          raise Http404
  
      mimetype, _ = mimetypes.guess_type(uri)
      return HttpResponse(content, mimetype=mimetype)
  
new_contents: """
  Views dedicated to rendering xblocks.
  """
  from __future__ import absolute_import
  
  import logging
  import mimetypes
  
  from xblock.core import XBlock
  
  from django.conf import settings
  from django.http import Http404, HttpResponse
  
  
  log = logging.getLogger(__name__)
  
  
  def xblock_resource(request, block_type, uri):  # pylint: disable=unused-argument
      """
      Return a package resource for the specified XBlock.
      """
      try:
          xblock_class = XBlock.load_class(block_type, select=settings.XBLOCK_SELECT_FUNCTION)
          content = xblock_class.open_local_resource(uri)
      except IOError:
          log.info('Failed to load xblock resource', exc_info=True)
          raise Http404
      except Exception:  # pylint: disable=broad-except
          log.error('Failed to load xblock resource', exc_info=True)
          raise Http404
  
      mimetype, _ = mimetypes.guess_type(uri)
      return HttpResponse(content, mimetype=mimetype)
  
subject: Fix XBlock class loading in local resource view