return HttpResponse(content=force_str(e.message), content_type='text/plain', status='400')
output_file = NamedTemporaryFile(prefix='librarian', suffix='.mobi', delete=False)
return HttpResponse(content=force_str(e.message), content_type='text/plain', status='400')
output_file = NamedTemporaryFile(prefix='librarian', suffix='.mobi', delete=False)