Update coord_iter to Mesa 2.0 API

Author: rht

examples/boltzmann_wealth_model/app.py

@@ -68,7 +68,7 @@
         my_bar.progress((i / num_ticks), text="Simulation progress")
         placeholder.text("Step = %d" % i)
         for cell in model.grid.coord_iter():
-            cell_content, x, y = cell
+            cell_content, (x, y) = cell
             agent_count = len(cell_content)
             selected_row = df_grid[(df_grid["x"] == x) & (df_grid["y"] == y)]
             df_grid.loc[

examples/caching_and_replay/model.py

@@ -63,8 +63,7 @@ def __init__(self, width=20, height=20, density=0.8, minority_pc=0.2, homophily=
         # the coordinates of a cell as well as
         # its contents. (coord_iter)
         for cell in self.grid.coord_iter():
-            x = cell[1]
-            y = cell[2]
+            x, y = cell[1]
             if self.random.random() < self.density:
                 agent_type = 1 if self.random.random() < self.minority_pc else 0
 

examples/color_patches/color_patches/model.py

@@ -80,7 +80,7 @@ def __init__(self, width=20, height=20):
         #  -->but only col & row
         # for (contents, col, row) in self._grid.coord_iter():
         # replaced content with _ to appease linter
-        for _, row, col in self._grid.coord_iter():
+        for _, (row, col) in self._grid.coord_iter():
             cell = ColorCell(
                 (row, col), self, ColorCell.OPINIONS[self.random.randrange(0, 16)]
             )

examples/conways_game_of_life/app.py

@@ -49,7 +49,7 @@
         model.step()
         my_bar.progress((i / num_ticks), text="Simulation progress")
         placeholder.text("Step = %d" % i)
-        for contents, x, y in model.grid.coord_iter():
+        for contents, (x, y) in model.grid.coord_iter():
             # print('x:',x,'y:',y, 'state:',contents)
             selected_row = df_grid[(df_grid["x"] == x) & (df_grid["y"] == y)]
             df_grid.loc[

examples/conways_game_of_life/conways_game_of_life/model.py

@@ -27,7 +27,7 @@ def __init__(self, width=50, height=50):
 
         # Place a cell at each location, with some initialized to
         # ALIVE and some to DEAD.
-        for contents, x, y in self.grid.coord_iter():
+        for contents, (x, y) in self.grid.coord_iter():
             cell = Cell((x, y), self)
             if self.random.random() < 0.1:
                 cell.state = cell.ALIVE

examples/epstein_civil_violence/epstein_civil_violence/model.py

@@ -81,7 +81,7 @@ def __init__(
         unique_id = 0
         if self.cop_density + self.citizen_density > 1:
             raise ValueError("Cop density + citizen density must be less than 1")
-        for contents, x, y in self.grid.coord_iter():
+        for contents, (x, y) in self.grid.coord_iter():
             if self.random.random() < self.cop_density:
                 cop = Cop(unique_id, self, (x, y), vision=self.cop_vision)
                 unique_id += 1

examples/forest_fire/forest_fire/model.py

@@ -29,7 +29,7 @@ def __init__(self, width=100, height=100, density=0.65):
         )
 
         # Place a tree in each cell with Prob = density
-        for contents, x, y in self.grid.coord_iter():
+        for contents, (x, y) in self.grid.coord_iter():
             if self.random.random() < density:
                 # Create a tree
                 new_tree = TreeCell((x, y), self)

examples/hex_snowflake/hex_snowflake/model.py

@@ -25,9 +25,9 @@ def __init__(self, width=50, height=50):
         self.grid = mesa.space.HexGrid(width, height, torus=True)
 
         # Place a dead cell at each location.
-        for contents, x, y in self.grid.coord_iter():
-            cell = Cell((x, y), self)
-            self.grid.place_agent(cell, (x, y))
+        for contents, pos in self.grid.coord_iter():
+            cell = Cell(pos, self)
+            self.grid.place_agent(cell, pos)
             self.schedule.add(cell)
 
         # activate the center(ish) cell.

examples/pd_grid/analysis.ipynb

@@ -68,7 +68,7 @@
     "    if not ax:\n",
     "        fig, ax = plt.subplots(figsize=(6, 6))\n",
     "    grid = np.zeros((model.grid.width, model.grid.height))\n",
-    "    for agent, x, y in model.grid.coord_iter():\n",
+    "    for agent, (x, y) in model.grid.coord_iter():\n",
     "        if agent.move == \"D\":\n",
     "            grid[y][x] = 1\n",
     "        else:\n",

examples/schelling/model.py

@@ -61,8 +61,7 @@ def __init__(self, width=20, height=20, density=0.8, minority_pc=0.2, homophily=
         # the coordinates of a cell as well as
         # its contents. (coord_iter)
         for cell in self.grid.coord_iter():
-            x = cell[1]
-            y = cell[2]
+            x, y = cell[1]
             if self.random.random() < self.density:
                 agent_type = 1 if self.random.random() < self.minority_pc else 0