Day 4

04.py

@@ -0,0 +1,21 @@
+from collections import defaultdict, Counter
+
+sleeps = defaultdict(Counter)
+
+with open('data/04.txt', 'r') as file:
+    guard = sleep = 0
+
+    for log in sorted(line.strip() for line in file):
+        action = log[-5:]
+        if action == 'shift':
+            guard = log[26:-13]
+        elif action == 'sleep':
+            sleep = int(log[15:17])
+        else:
+            sleeps[guard].update(range(sleep, int(log[15:17])))
+
+most_sleep = max(sleeps.items(), key=lambda p: sum(p[1].values()))
+print(int(most_sleep[0]) * most_sleep[1].most_common(1)[0][0])
+
+sleepiest_minute = max([(guard, times.most_common(1)[0]) for (guard, times) in sleeps.items()], key=lambda p: p[1][1])
+print(int(sleepiest_minute[0]) * sleepiest_minute[1][0])