diff --git a/mesa/experimental/cell_space/cell.py b/mesa/experimental/cell_space/cell.py
index 1fcea747076..3e283270db4 100644
--- a/mesa/experimental/cell_space/cell.py
+++ b/mesa/experimental/cell_space/cell.py
@@ -2,7 +2,7 @@
 
 from functools import cache
 from random import Random
-from typing import TYPE_CHECKING, TypeVar, Generic
+from typing import TYPE_CHECKING, Generic, TypeVar
 
 from mesa.experimental.cell_space.cell_collection import CellCollection
 
@@ -59,9 +59,7 @@ def __init__(
         super().__init__()
         self.coordinate = coordinate
         self._connections: list[Cell[U]] = []  # TODO: change to CellCollection?
-        self.agents = (
-            []
-        )  # TODO:: change to AgentSet or weakrefs? (neither is very performant, )
+        self.agents = []  # TODO:: change to AgentSet or weakrefs? (neither is very performant, )
         self.capacity = capacity
         self.properties: dict[str, object] = {}
         self.random = random
diff --git a/mesa/experimental/cell_space/discrete_space.py b/mesa/experimental/cell_space/discrete_space.py
index fe3c0af78de..a05ffdb8828 100644
--- a/mesa/experimental/cell_space/discrete_space.py
+++ b/mesa/experimental/cell_space/discrete_space.py
@@ -45,7 +45,8 @@ def __init__(
     def cutoff_empties(self):
         return 7.953 * len(self._cells) ** 0.384
 
-    def _connect_single_cell(self, cell: T): ...
+    def _connect_single_cell(self, cell: T):
+        ...
 
     @cached_property
     def all_cells(self):
diff --git a/mesa/experimental/cell_space/grid.py b/mesa/experimental/cell_space/grid.py
index 457a2ce274f..1f722df9f73 100644
--- a/mesa/experimental/cell_space/grid.py
+++ b/mesa/experimental/cell_space/grid.py
@@ -58,9 +58,11 @@ def _connect_cells(self) -> None:
         else:
             self._connect_cells_nd()
 
-    def _connect_cells_2d(self) -> None: ...
+    def _connect_cells_2d(self) -> None:
+        ...
 
-    def _connect_cells_nd(self) -> None: ...
+    def _connect_cells_nd(self) -> None:
+        ...
 
     def _validate_parameters(self):
         if not all(isinstance(dim, int) and dim > 0 for dim in self.dimensions):