  import copy
  
  from django.conf import settings
  from django.utils import six
  
  from . import Error, Tags, register
  
  E001 = Error(
      "You have 'APP_DIRS': True in your TEMPLATES but also specify 'loaders' "
 
</s> remove from django.utils import six
 </s> add  </s> remove from django.utils import six
 </s> add  </s> remove from django.utils import six
 </s> add  </s> remove from django.utils import six, timezone
 </s> add from django.utils import timezone </s> remove from django.utils import six
 </s> add 
  import copy
  
  from django.conf import settings

  
  from . import Error, Tags, register
  
  E001 = Error(
      "You have 'APP_DIRS': True in your TEMPLATES but also specify 'loaders' "
keep keep keep replace keep keep keep keep keep
 Refs #23919 -- Removed six.<various>_types usage

Thanks Tim Graham and Simon Charette for the reviews. 
django/core/checks/templates.py