Add comments to solutions so far

2022/Day-03/day03-2.py

@@ -1,15 +1,17 @@
 #!/usr/bin/python3
 
+# Import lists of the alphabet so we can find indxes later.
 from string import ascii_lowercase, ascii_uppercase
 
 commonItems = []
 backpacks = []
 
+# Read the whole input file to a list.
 with open('input.txt', 'r') as inputFile:
     backpacks = inputFile.readlines()
 
+# Group the backpacks up into threes and find the common item in each three.
 currentBackpack = 0
-
 while(currentBackpack < len(backpacks)):
     currentGroup = []
     while(len(currentGroup) < 3):
@@ -20,12 +22,13 @@ while(currentBackpack < len(backpacks)):
             commonItems.append(item)
             break
 
+# For all of the common items we found, total up the priorities.
 totalPriority = 0
-
 for item in commonItems:
     if(item in ascii_lowercase):
         totalPriority += (ascii_lowercase.index(item) + 1)
     elif(item in ascii_uppercase):
         totalPriority += (ascii_uppercase.index(item) + 27)
 
+# Print the answer.
 print(totalPriority)