Added solution to day 4

#!/usr/bin/env python3

# -*- coding: utf-8 -*-

'''

Solutions for day 4 2023

'''

import time

import argparse as ap

class Card:

    def __init__(self, line):

        (label, full) = line.split(':')

        self.id = ''.join([x for x in filter(lambda y: y.isdigit(), label)])

        (win, num) = full.split('|')

        win, num = win.split(), num.split()

        win, num = set(win), set(num)

        self.res = len(win&num)

        self.points = int(2**(self.res-1))

def solve1(file=None, verbose=False, solution=0):

    # You don't even have to make a list and operate

    # on it, but this makes solution 1 more consistent

    # with solution 2.

    try:

        deck = []

        with open(file, 'r') as f:

            for line in f.readlines():

                card = Card(line)

                deck.append(card)

        solution = sum([x.points for x in deck])

    except FileNotFoundError:

        pass

    return solution

def solve2(file=None, verbose=False, solution=0):

    try:

        deck = []

        with open(file, 'r') as f:

            for line in f.readlines():

                card = Card(line)

                deck.append([card, 1])

        for i, (card, mult) in enumerate(deck):

            for j in range(1, card.res+1):

                deck[i+j][1] += deck[i][1]

        solution = sum([x[1] for x in deck])

    except FileNotFoundError:

        pass

    return solution

def main():

    parser = ap.ArgumentParser()

    parser.add_argument('-i', dest='input', action='store_true')

    parser.add_argument('-v', dest='verbose', action='store_true')

    args = parser.parse_args()

    infile = 'input' if args.input else 'test'

    verbose = args.verbose

    t0 = time.time()

    sol1 = solve1(infile, verbose)

    dt = time.time() - t0

    print(f"Solution 1: {sol1}, Time: {dt}")

    t0 = time.time()

    sol2 = solve2(infile, verbose)

    dt = time.time() - t0

    print(f"Solution 2: {sol2}, Time: {dt}")

    return

if __name__ == "__main__":

    try:

        main()

    except KeyboardInterrupt:

        raise SystemExit("User interruption.")

Card 1: 41 48 83 86 17 | 83 86  6 31 17  9 48 53

Card 2: 13 32 20 16 61 | 61 30 68 82 17 32 24 19

Card 3:  1 21 53 59 44 | 69 82 63 72 16 21 14  1

Card 4: 41 92 73 84 69 | 59 84 76 51 58  5 54 83

Card 5: 87 83 26 28 32 | 88 30 70 12 93 22 82 36

Card 6: 31 18 13 56 72 | 74 77 10 23 35 67 36 11