diff --git a/python_tools/aoc_utils.py b/python_tools/aoc_utils.py
index d112e52..8641da5 100644
--- a/python_tools/aoc_utils.py
+++ b/python_tools/aoc_utils.py
@@ -4,5 +4,8 @@ def file2list(filepath):
     f = open(filepath, 'r')
     return [x.strip() for x in f.readlines()]
 
+def file2listoflists(filepath):
+    f = open(filepath, 'r')
+    return [list(x.strip()) for x in f.readlines()]