Add code for 2015 advent that I did historically.

day_2/part_2.py

@@ -0,0 +1,16 @@
+ribbon_sum = 0
+
+
+with open("input", "r") as data:
+
+
+	for line in data:
+		dimensions = line.split("x")
+		l, w, h = [int(x) for x in dimensions]
+
+		min_perimeter = min(l+l+w+w, l+l+h+h, h+h+w+w)
+		volume = l * w * h
+
+		ribbon_sum += min_perimeter + volume
+
+print(ribbon_sum)