1 files changed, 31 insertions, 0 deletions
diff --git a/challenge-248/sgreen/python/ch-2.py b/challenge-248/sgreen/python/ch-2.py
new file mode 100755
index 0000000000..47eba6db2d
--- /dev/null
+++ b/challenge-248/sgreen/python/ch-2.py
@@ -0,0 +1,31 @@
+#!/usr/bin/env python3
+
+import json
+import sys
+
+
+def main(matrix):
+    # Calculate the size of the matrix
+    rows = len(matrix)
+    cols = len(matrix[0])
+
+    # Check that all columns are of equal length
+    for r in range(1, rows):
+        if len(matrix[r]) != cols:
+            raise ValueError(f'Row {r} has different number of columns')
+
+    print('[')
+    for r in range(rows-1):
+        # Compute each row
+        row = []
+        for c in range(cols-1):
+            row.append(matrix[r][c] + matrix[r][c+1] +
+                       matrix[r+1][c] + matrix[r+1][c+1])
+        print('  ' + str(row) + ',')
+
+    print(']')
+
+
+if __name__ == '__main__':
+    # Read the input as JSON
+    main(json.loads(sys.argv[1]))