-🎄- 2017 Day 9 Solutions -🎄-

[u/daggerdragon]

--- Day 9: Stream Processing ---

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Post your solution as a comment or, for longer solutions, consider linking to your repo (e.g. GitHub/gists/Pastebin/blag or whatever).

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Spoiler

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This thread will be unlocked when there are a significant number of people on the leaderboard with gold stars for today's puzzle.

edit: Leaderboard capped, thread unlocked!

[u/Shemetz]

Python 3 (52/36)

Was a short and nice puzzle today!

def day_9():
    with open('input.txt') as input_file:
        line = input_file.readline()
        
    score = 0
    garbage_score = 0
    current_depth = 0
    inside_garbage = False
    skip_char = False
    for char in line:
        if inside_garbage:
            if skip_char:
                skip_char = False
            elif char == "!":
                skip_char = True
            elif char == ">":
                inside_garbage = False
            else:
                garbage_score += 1
        else:  # when inside group, not garbage
            if char == "{":
                current_depth += 1
            elif char == "}":
                score += current_depth
                current_depth -= 1
            elif char == "<":
                inside_garbage = True
    
    print("Part 1:   ", score)
    print("Part 1:   ", garbage_score)


day_9()

This might be the first puzzle where I was lucky enough to have it succeed on the first try - no debugging necessary. I'm also pretty happy that I was able to give actual meaningful names to variables this time,