fix pep8

Author: jorisvandenbossche

pandas/core/internals.py

@@ -2894,8 +2894,6 @@ def concat_same_type(self, to_concat):
 
         return self.make_block_same_class(
             values, placement=slice(0, len(values), 1))
-        #else:
-        #    return make_block(values, placement=slice(0, len(values), 1))
 
 
 def make_block(values, placement, klass=None, ndim=None, dtype=None,

pandas/core/reshape/concat.py

@@ -370,7 +370,7 @@ def get_result(self):
                 # check if all series are of the same block type:
                 if len(non_empties) > 0:
                     blocks = [obj._data.blocks[0] for obj in non_empties]
-                    if all([type(b) == type(blocks[0]) for b in blocks[1:]]):
+                    if all([type(b) is type(blocks[0]) for b in blocks[1:]]):  # noqa
                         new_block = blocks[0].concat_same_type(blocks)
                         if isinstance(new_block, SparseBlock):
                             cons = SparseSeries