  import time
  import warnings
  
  from django.core.cache.backends.base import DEFAULT_TIMEOUT, BaseCache
  from django.utils import six
  from django.utils.deprecation import RemovedInDjango21Warning
  from django.utils.encoding import force_str
  from django.utils.functional import cached_property
  
  
 
</s> remove from django.utils import six
 </s> add  </s> remove from django.utils import six
 </s> add  </s> remove from django.utils import dateformat, datetime_safe, numberformat, six
 </s> add from django.utils import dateformat, datetime_safe, numberformat </s> remove from django.utils import lru_cache, six
 </s> add from django.utils import lru_cache </s> remove from django.utils import six
 </s> add 
  import time
  import warnings
  
  from django.core.cache.backends.base import DEFAULT_TIMEOUT, BaseCache

  from django.utils.deprecation import RemovedInDjango21Warning
  from django.utils.encoding import force_str
  from django.utils.functional import cached_property
  
  
keep 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/cache/backends/memcached.py