[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

examples/schelling/model.py

@@ -19,7 +19,9 @@ def __init__(self, model: mesa.Model, agent_type: int) -> None:
 
     def step(self):
         neighbors = self.cell.get_neighborhood(radius=self.model.radius).agents
-        similar = len([neighbor for neighbor in neighbors if neighbor.type == self.type])
+        similar = len(
+            [neighbor for neighbor in neighbors if neighbor.type == self.type]
+        )
 
         # If unhappy, move:
         if similar < self.model.homophily: