diff --git a/lib/iris/_data_manager.py b/lib/iris/_data_manager.py
index 1e7a5171b3..87caf0738d 100644
--- a/lib/iris/_data_manager.py
+++ b/lib/iris/_data_manager.py
@@ -5,14 +5,14 @@
 """Management of common state and behaviour for cube and coordinate data."""
 
 import copy
-
-import iris.exceptions
-import iris.warnings
 from warnings import warn
+
 import numpy as np
 import numpy.ma as ma
 
 from iris._lazy_data import as_concrete_data, as_lazy_data, is_lazy_data
+import iris.exceptions
+import iris.warnings
 
 
 class DataManager:
@@ -47,8 +47,6 @@ def __init__(self, data, shape=None):
             msg = f"A cube may not be created without both data and a custom shape."
             warn(msg, iris.warnings.IrisUserWarning)
 
-
-
     def __copy__(self):
         """Forbid :class:`~iris._data_manager.DataManager` instance shallow-copy support."""
         name = type(self).__name__
@@ -290,7 +288,6 @@ def ndim(self):
     def shape(self):
         """The shape of the data being managed."""
         if self.data is None:
-        # if self._lazy_array is None and np.all(self.data == None):
             result = self._shape
         else:
             result = self.core_data().shape
diff --git a/lib/iris/cube.py b/lib/iris/cube.py
index abeceff819..66f694da8d 100644
--- a/lib/iris/cube.py
+++ b/lib/iris/cube.py
@@ -1190,7 +1190,7 @@ def _walk_nodes(node):
 
     def __init__(
         self,
-        data: np.typing.ArrayLike, # should this now be none? test this
+        data: np.typing.ArrayLike,  # should this now be none? test this
         shape: tuple | None = None,
         standard_name: str | None = None,
         long_name: str | None = None,