fixup! Internals refactor

pandas/core/internals.py

@@ -59,7 +59,7 @@
 
 from pandas.core.index import Index, MultiIndex, _ensure_index
 from pandas.core.indexing import maybe_convert_indices, length_of_indexer
-from pandas.core.arrays import Categorical, ExtensionArray
+from pandas.core.arrays import Categorical
 from pandas.core.indexes.datetimes import DatetimeIndex
 from pandas.io.formats.printing import pprint_thing
 
@@ -116,7 +116,8 @@ def __init__(self, values, placement, ndim=None, fastpath=False):
         self.mgr_locs = placement
         self.values = values
 
-        if self._validate_ndim and ndim and len(self.mgr_locs) != len(self.values):
+        if (self._validate_ndim and ndim and
+                len(self.mgr_locs) != len(self.values)):
             raise ValueError(
                 'Wrong number of items passed {val}, placement implies '
                 '{mgr}'.format(val=len(self.values), mgr=len(self.mgr_locs)))
@@ -1708,7 +1709,8 @@ def __init__(self, values, placement, ndim=None, fastpath=False, **kwargs):
                 ndim = 1
             else:
                 ndim = 2
-        super(NonConsolidatableMixIn, self).__init__(values, placement, ndim=ndim,
+        super(NonConsolidatableMixIn, self).__init__(values, placement,
+                                                     ndim=ndim,
                                                      fastpath=fastpath)
 
     @property