Minor pep updates to boltzmann.

examples/Boltzmann_Wealth_Model/MoneyModel.py

@@ -6,23 +6,27 @@
 
 import random
 
+
 def compute_gini(model):
     agent_wealths = [agent.wealth for agent in model.schedule.agents]
     x = sorted(agent_wealths)
     N = model.num_agents
-    B = sum( xi * (N-i) for i,xi in enumerate(x) ) / (N*sum(x))
-    return (1 + (1/N) - 2*B)
+    B = sum(xi * (N - i) for i, xi in enumerate(x)) / (N * sum(x))
+    return (1 + (1 / N) - 2 * B)
 
 
 class MoneyModel(Model):
     """A model with some number of agents."""
+
     def __init__(self, N, width, height):
         self.num_agents = N
         self.running = True
         self.grid = MultiGrid(height, width, True)
         self.schedule = RandomActivation(self)
-        self.datacollector = DataCollector(model_reporters={"Gini": compute_gini},
-                agent_reporters={"Wealth": lambda a: a.wealth})
+        self.datacollector = DataCollector(
+            model_reporters={"Gini": compute_gini},
+            agent_reporters={"Wealth": lambda a: a.wealth}
+        )
         # Create agents
         for i in range(self.num_agents):
             a = MoneyAgent(i)
@@ -35,19 +39,23 @@ def __init__(self, N, width, height):
     def step(self):
         self.datacollector.collect(self)
         self.schedule.step()
-    
+
     def run_model(self, n):
         for i in range(n):
             self.step()
 
+
 class MoneyAgent(Agent):
     """ An agent with fixed initial wealth."""
+
     def __init__(self, unique_id):
         self.unique_id = unique_id
         self.wealth = 1
 
     def move(self, model):
-        possible_steps = model.grid.get_neighborhood(self.pos, moore=True, include_center=False)
+        possible_steps = model.grid.get_neighborhood(
+            self.pos, moore=True, include_center=False
+        )
         new_position = random.choice(possible_steps)
         model.grid.move_agent(self, new_position)
 

examples/Boltzmann_Wealth_Model/Viz_MoneyModel.py

@@ -19,9 +19,11 @@ def agent_portrayal(agent):
     return portrayal
 
 grid = CanvasGrid(agent_portrayal, 10, 10, 500, 500)
-chart = ChartModule([{"Label": "Gini", "Color": "Black"}], 
-                            data_collector_name='datacollector')
+chart = ChartModule([
+    {"Label": "Gini", "Color": "Black"}],
+    data_collector_name='datacollector'
+)
 
 server = ModularServer(MoneyModel, [grid, chart], "Money Model", 100, 10, 10)
 server.port = 8889
-server.launch()
+server.launch()