diff --git a/benchmarks/BoltzmannWealth/boltzmann_wealth.py b/benchmarks/BoltzmannWealth/boltzmann_wealth.py
index 90cb5ef1fb0..4d8eee90ff5 100644
--- a/benchmarks/BoltzmannWealth/boltzmann_wealth.py
+++ b/benchmarks/BoltzmannWealth/boltzmann_wealth.py
@@ -6,6 +6,7 @@
 import mesa
 import mesa.spaces as spaces
 
+
 def compute_gini(model):
     """Calculate gini for wealth in model.
 
@@ -88,7 +89,7 @@ def __init__(self, model):
         self.wealth = 1
 
     def give_money(self):
-        cellmates = [agent for agent in self.cell.agents if not agent is self]
+        cellmates = [agent for agent in self.cell.agents if agent is not self]
         if len(cellmates) > 0:
             other = self.random.choice(cellmates)
             other.wealth += 1
@@ -101,7 +102,7 @@ def step(self):
             self.give_money()
 
 
-if __name__ == '__main__':
+if __name__ == "__main__":
     model = BoltzmannWealth()
     for _ in range(10):
-        model.step()
\ No newline at end of file
+        model.step()
diff --git a/mesa/__init__.py b/mesa/__init__.py
index 86b49d272b1..81eda89ee9f 100644
--- a/mesa/__init__.py
+++ b/mesa/__init__.py
@@ -6,6 +6,7 @@
 import datetime
 
 import mesa.space as old_space
+
 # import mesa.spaces as spaces
 import mesa.time as time
 from mesa.agent import Agent
diff --git a/mesa/experimental/components/matplotlib.py b/mesa/experimental/components/matplotlib.py
index 2ef52ea6e80..a4656cf11e7 100644
--- a/mesa/experimental/components/matplotlib.py
+++ b/mesa/experimental/components/matplotlib.py
@@ -10,7 +10,6 @@
 import mesa
 
 
-
 @solara.component
 def SpaceMatplotlib(model, agent_portrayal, dependencies: list[any] | None = None):
     """A component for rendering a space using Matplotlib.
@@ -164,7 +163,6 @@ def portray(space):
 
 
 def _draw_voronoi(space, space_ax, agent_portrayal):
-    from mesa.spaces.voronoi import VoronoiGrid
     def portray(g):
         x = []
         y = []
diff --git a/mesa/spaces/__init__.py b/mesa/spaces/__init__.py
index 93c907e01bd..44ae0a5b6e7 100644
--- a/mesa/spaces/__init__.py
+++ b/mesa/spaces/__init__.py
@@ -1,9 +1,14 @@
-from mesa.spaces.network import Network
 from mesa.spaces.cell import Cell
 from mesa.spaces.cell_agent import CellAgent
 from mesa.spaces.cell_collection import CellCollection
 from mesa.spaces.discrete_space import DiscreteSpace
-from mesa.spaces.grid import Grid, HexGrid, OrthogonalMooreGrid, OrthogonalVonNeumannGrid
+from mesa.spaces.grid import (
+    Grid,
+    HexGrid,
+    OrthogonalMooreGrid,
+    OrthogonalVonNeumannGrid,
+)
+from mesa.spaces.network import Network
 from mesa.spaces.voronoi import VoronoiGrid
 
 __all__ = [
diff --git a/mesa/spaces/cell.py b/mesa/spaces/cell.py
index c68e1316445..2abb4e14ac1 100644
--- a/mesa/spaces/cell.py
+++ b/mesa/spaces/cell.py
@@ -123,7 +123,7 @@ def __repr__(self):  # noqa
 
     # FIXME: Revisit caching strategy on methods
     @cache  # noqa: B019
-    def neighborhood(self, radius=1, include_center=False):
+    def neighborhood(self, radius=1, include_center=False): -> CellCollection:
         """Returns a list of all neighboring cells."""
         return CellCollection(
             self._neighborhood(radius=radius, include_center=include_center),