game-of-life-step

# Starter stub for the toroidal Game-of-Life task.
#
# It reads the starting board from data/grid.csv and the run settings from
# data/config.json, then (for now) just copies the board straight through
# to output/next.csv WITHOUT advancing any generations. Replace the body so
# it actually evolves the board the requested number of steps under the rules
# described in the task.

import csv
import json
import os

with open("data/grid.csv") as f:
    grid = [[int(x) for x in row] for row in csv.reader(f) if row]

with open("data/config.json") as f:
    config = json.load(f)

generations = int(config["generations"])  # number of steps to advance
topology = config["topology"]

# TODO: replace this passthrough with the evolved board. As written it ignores
# the rules and the generation count, so it does not produce the requested board.
next_grid = grid

os.makedirs("output", exist_ok=True)
with open("output/next.csv", "w", newline="") as f:
    csv.writer(f).writerows(next_grid)

{"topology": "toroidal", "generations": 3}
1,1,0,0,0,0,0,1
0,0,0,0,1,1,0,1
0,2,0,0,1,0,0,0
0,0,0,0,0,0,2,0
1,0,0,0,0,0,0,0
1,0,1,1,0,0,0,1

<tmp>/workspace
data/grid.csv
data/config.json
main.py
task.toml
environment/README.md
instruction.md

0,1,1,1,0,1,0,0
0,1,1,0,0,0,0,0
0,2,0,0,0,0,0,0
1,1,0,0,0,0,2,0
1,1,0,0,0,0,0,0
1,0,1,0,0,0,0,0

diff --git a/main.py b/output/next.csv
index a3bd7f9..a35d029 100644
--- a/main.py
+++ b/output/next.csv
@@ -1,75 +1,6 @@
-# Starter stub for the toroidal Game-of-Life task.
-#
-# It reads the starting board from data/grid.csv and the run settings from
-# data/config.json, then (for now) just copies the board straight through
-# to output/next.csv WITHOUT advancing any generations. Replace the body so
-# it actually evolves the board the requested number of steps under the rules
-# described in the task.
-
-import csv
-import json
-import os
-
-with open("data/grid.csv") as f:
-    grid = [[int(x) for x in row] for row in csv.reader(f) if row]
-
-with open("data/config.json") as f:
-    config = json.load(f)
-
-generations = int(config["generations"])  # number of steps to advance
-topology = config["topology"]
-
-if topology != "toroidal":
-    raise ValueError(f"Unsupported topology: {topology}")
-
-
-def living_neighbors(board, row, col):
-    rows = len(board)
-    cols = len(board[0])
-    count = 0
-
-    for dr in (-1, 0, 1):
-        for dc in (-1, 0, 1):
-            if dr == 0 and dc == 0:
-                continue
-
-            neighbor_row = (row + dr) % rows
-            neighbor_col = (col + dc) % cols
-            if board[neighbor_row][neighbor_col] == 1:
-                count += 1
-
-    return count
-
-
-def evolve_once(board):
-    rows = len(board)
-    cols = len(board[0])
-    next_board = []
-
-    for row in range(rows):
-        next_row = []
-        for col in range(cols):
-            cell = board[row][col]
-
-            if cell == 2:
-                next_row.append(2)
-                continue
-
-            neighbors = living_neighbors(board, row, col)
-            if cell == 1:
-                next_row.append(1 if neighbors in (2, 3) else 0)
-            else:
-                next_row.append(1 if neighbors == 3 else 0)
-
-        next_board.append(next_row)
-
-    return next_board
-
-
-next_grid = grid
-for _ in range(generation
… (+285 chars truncated)

0,1,1,1,0,1,0,0
0,1,1,0,0,0,0,0
0,2,0,0,0,0,0,0
1,1,0,0,0,0,2,0
1,1,0,0,0,0,0,0
1,0,1,0,0,0,0,0

     1	# Starter stub for the toroidal Game-of-Life task.
     2	#
     3	# It reads the starting board from data/grid.csv and the run settings from
     4	# data/config.json, then (for now) just copies the board straight through
     5	# to output/next.csv WITHOUT advancing any generations. Replace the body so
     6	# it actually evolves the board the requested number of steps under the rules
     7	# described in the task.
     8	
     9	import csv
    10	import json
    11	import os
    12	
    13	with open("data/grid.csv") as f:
    14	    grid = [[int(x) for x in row] for row in csv.reader(f) if row]
    15	
    16	with open("data/config.json") as f:
    17	    config = json.load(f)
    18	
    19	generations = int(config["generations"])  # number of steps to advance
    20	topology = config["topology"]
    21	
    22	if topology != "toroidal":
    23	    raise ValueError(f"Unsupported topology: {topology}")
    24	
    25	
    26	def living_neighbors(board, row, col):
    27	    rows = len(board)
    28	    cols = len(board[0])
    29	    count = 0
    30	
    31	    for dr in (-1, 0, 1):
    32	        for dc in (-1, 0, 1):
    33	            if dr == 0 and dc == 0:
    34	                continue
    35	
    36	            neighbor_row = (row + dr) % rows
    37	            neighbor_col = (col + dc) % cols
    38	            if board[neighbor_row][neighbor_col] == 1:
    39	                count += 1
    40	
    41	    return count
    42	
    43	
    44	def evolve_once(board):
    45	    rows = len(board)
    46	    cols = len(board[0])
    47	    next_board = []
    48	
    49	    for row in range(rows):
    50	        next_row = []
    51	        for col in range(cols):
    52	            cell = board[row][col]
    53	
    54	            if cell == 2:
    55	                next_row.append(2)
    56	                continue
    57	
    58	            neighbors = living_neighbors(board, row, col)
    59	            if cell == 1:
    60	                nex
… (+526 chars truncated)