Revert base.py

pandas/core/base.py

@@ -1069,18 +1069,12 @@ def memory_usage(self, deep=False):
  --------
  numpy.ndarray.nbytes
  """
- # Use sparse values if they exist for memory consumption
- # if hasattr(self.values, 'sp_values'):
- # values = self.values.sp_values
- # else:
- values = self.values
+ if hasattr(self.values, 'memory_usage'):
+ return self.values.memory_usage(deep=deep)
 
- if hasattr(values, 'memory_usage'):
- return values.memory_usage(deep=deep)
-
- v = values.nbytes
+ v = self.values.nbytes
  if deep and is_object_dtype(self) and not PYPY:
- v += lib.memory_usage_of_objects(values)
+ v += lib.memory_usage_of_objects(self.values)
  return v
 
  def factorize(self, sort=False, na_sentinel=-1):