En Python

#! /usr/bin/python3
# Advent of Code 2023, day 4
from __future__ import annotations
from collections.abc import Iterable
from typing import Self
import re
class Card:
 def __init__(self, id_: int, win_nums: Iterable[int], got_nums: Iterable[int]):
 self.id = id_
 self.win_nums = set(win_nums)
 self.got_nums = set(got_nums)
 self._matches: Optional[int] = None
 pattern = re.compile(r'^Card +(\d+): ([ \d]+) \| ([ \d]+)\n?$')
 @classmethod
 def import_line(cls, line: str) -> Self:
 if (m := cls.pattern.match(line)) is not None:
 return cls(int(m[1]), (int(word) for word in m[2].split()), (int(word) for word in m[3].split()))
 print(line)
 raise ValueError("invalid card description")
 @property
 def matches(self) -> int:
 if self._matches is None:
 self._matches = len(self.win_nums & self.got_nums)
 assert self._matches is not None
 return self._matches
 @staticmethod
 def _num_to_points(num: int) -> int:
 if num <= 0:
 return 0
 return 2 ** (num - 1)
 def points(self) -> int:
 return self._num_to_points(self.matches)
def solve_both_parts(lines: aoc.Data) -> tuple[int, int]:
 """Solve puzzle parts 1 and 2: determine the sum of all card values and the total number of cards"""
 # Import
 cards: list[int, Card] = []
 for line in lines:
 card = Card.import_line(line)
 cards.append(card)
 # Part 1
 points = sum(card.points() for card in cards)
 # Part 2
 copies = [1 for card in cards]
 for i, card in enumerate(cards):
 for j in range(i + 1, i + 1 + card.matches):
 copies[j] += copies[i]
 return points, sum(copies)