      get_cache_key, learn_cache_key, patch_cache_control, patch_vary_headers,
  )
  from django.views.decorators.cache import cache_control, cache_page
  
  from .models import Poll, expensive_calculation
  
  
 
</s> remove     override_settings,
 </s> add     ignore_warnings, override_settings, </s> remove         # pylibmc doesn't seem to have SERVER_MAX_VALUE_LENGTH as far as I can
        # tell from a quick check of its source code. This is falling back to
        # the default value exposed by python-memcached on my system.
        max_value_length = getattr(cache._lib, 'SERVER_MAX_VALUE_LENGTH', 1048576)
 </s> add         max_value_length = 2 ** 20
from django.utils.deprecation import RemovedInDjango41Warning
      get_cache_key, learn_cache_key, patch_cache_control, patch_vary_headers,
  )
from django.utils.deprecation import RemovedInDjango41Warning
  from django.views.decorators.cache import cache_control, cache_page
  
  from .models import Poll, expensive_calculation
  
  
keep add keep keep keep keep keep
 Fixed #32193 -- Deprecated MemcachedCache. 
tests/cache/tests.py