Start fixing 2015 for new API.

src/holt59/aoc/2015/day1.py

@@ -1,10 +1,12 @@
-import sys
+from typing import Any, Iterator
 
-line = sys.stdin.read().strip()
+from ..base import BaseSolver
 
+
+class Solver(BaseSolver):
+    def solve(self, input: str) -> Iterator[Any]:
         floor = 0
-floors = [(floor := floor + (1 if c == "(" else -1)) for c in line]
+        floors = [(floor := floor + (1 if c == "(" else -1)) for c in input]
 
-
+        yield floors[-1]
-print(f"answer 1 is {floors[-1]}")
+        yield floors.index(-1)
-print(f"answer 2 is {floors.index(-1)}")

src/holt59/aoc/2015/day10.py

@@ -1,7 +1,7 @@
 import itertools
-import sys
+from typing import Any, Iterator
 
-line = sys.stdin.read().strip()
+from ..base import BaseSolver
 
 # see http://www.se16.info/js/lands2.htm for the explanation of 'atoms' (or elements)
 #
@@ -9,7 +9,7 @@ line = sys.stdin.read().strip()
 # CodeGolf answer https://codegolf.stackexchange.com/a/8479/42148
 
 # fmt: off
-atoms = [
+ATOMS: list[tuple[str, tuple[int, ...]]] = [
     ("22", (0, )),  # 0
     ("13112221133211322112211213322112", (71, 90, 0, 19, 2, )),  # 1
     ("312211322212221121123222112", (1, )),  # 2
@@ -105,7 +105,7 @@ atoms = [
 ]
 # fmt: on
 
-starters = [
+STARTERS = [
     "1",
     "11",
     "21",
@@ -122,27 +122,26 @@ def look_and_say_length(s: str, n: int) -> int:
     if n == 0:
         return len(s)
 
-    if s in starters:
+    if s in STARTERS:
         return look_and_say_length(
             "".join(f"{len(list(g))}{k}" for k, g in itertools.groupby(s)), n - 1
         )
 
-    counts = {i: 0 for i in range(len(atoms))}
+    counts = {i: 0 for i in range(len(ATOMS))}
-    idx = next(i for i, (a, _) in enumerate(atoms) if s == a)
+    idx = next(i for i, (a, _) in enumerate(ATOMS) if s == a)
     counts[idx] = 1
 
     for _ in range(n):
-        c2 = {i: 0 for i in range(len(atoms))}
+        c2 = {i: 0 for i in range(len(ATOMS))}
         for i in counts:
-            for j in atoms[i][1]:
+            for j in ATOMS[i][1]:
                 c2[j] += counts[i]
         counts = c2
 
-    return sum(counts[i] * len(a[0]) for i, a in enumerate(atoms))
+    return sum(counts[i] * len(a[0]) for i, a in enumerate(ATOMS))
 
 
-answer_1 = look_and_say_length(line, 40)
+class Solver(BaseSolver):
-print(f"answer 1 is {answer_1}")
+    def solve(self, input: str) -> Iterator[Any] | None:
-
+        yield look_and_say_length(input, 40)
-answer_2 = look_and_say_length(line, 50)
+        yield look_and_say_length(input, 50)
-print(f"answer 2 is {answer_2}")

src/holt59/aoc/2015/day11.py

@@ -1,5 +1,7 @@
 import itertools
-import sys
+from typing import Any, Iterator
+
+from ..base import BaseSolver
 
 
 def is_valid(p: str) -> bool:
@@ -40,10 +42,8 @@ def find_next_password(p: str) -> str:
     return p
 
 
-line = sys.stdin.read().strip()
+class Solver(BaseSolver):
-
+    def solve(self, input: str) -> Iterator[Any]:
-answer_1 = find_next_password(line)
+        answer_1 = find_next_password(input)
-print(f"answer 1 is {answer_1}")
+        yield answer_1
-
+        yield find_next_password(increment(answer_1))
-answer_2 = find_next_password(increment(answer_1))
-print(f"answer 2 is {answer_2}")

src/holt59/aoc/2015/day12.py

@@ -1,6 +1,7 @@
 import json
-import sys
+from typing import Any, Iterator, TypeAlias
-from typing import TypeAlias
+
+from ..base import BaseSolver
 
 JsonObject: TypeAlias = dict[str, "JsonObject"] | list["JsonObject"] | int | str
 
@@ -18,10 +19,9 @@ def json_sum(value: JsonObject, ignore: str | None = None) -> int:
         return 0
 
 
-data: JsonObject = json.load(sys.stdin)
+class Solver(BaseSolver):
+    def solve(self, input: str) -> Iterator[Any]:
+        data: JsonObject = json.loads(input)
 
-answer_1 = json_sum(data)
+        yield json_sum(data)
-print(f"answer 1 is {answer_1}")
+        yield json_sum(data, "red")
-
-answer_2 = json_sum(data, "red")
-print(f"answer 2 is {answer_2}")

src/holt59/aoc/2015/day13.py

@@ -1,10 +1,11 @@
 import itertools
-import sys
 from collections import defaultdict
-from typing import Literal, cast
+from typing import Any, Iterator, Literal, cast
 
 import parse  # type: ignore
 
+from ..base import BaseSolver
+
 
 def max_change_in_happiness(happiness: dict[str, dict[str, int]]) -> int:
     guests = list(happiness)
@@ -17,7 +18,9 @@ def max_change_in_happiness(happiness: dict[str, dict[str, int]]) -> int:
     )
 
 
-lines = sys.stdin.read().splitlines()
+class Solver(BaseSolver):
+    def solve(self, input: str) -> Iterator[Any]:
+        lines = input.splitlines()
 
         happiness: dict[str, dict[str, int]] = defaultdict(dict)
         for line in lines:
@@ -29,13 +32,9 @@ for line in lines:
             )
             happiness[u1][u2] = hap if gain_or_loose == "gain" else -hap
 
-
+        yield max_change_in_happiness(happiness)
-answer_1 = max_change_in_happiness(happiness)
-print(f"answer 1 is {answer_1}")
-
         for guest in list(happiness):
             happiness["me"][guest] = 0
             happiness[guest]["me"] = 0
 
-answer_2 = max_change_in_happiness(happiness)
+        yield max_change_in_happiness(happiness)
-print(f"answer 2 is {answer_2}")

src/holt59/aoc/2015/day14.py

@@ -1,9 +1,10 @@
-import sys
 from dataclasses import dataclass
-from typing import Literal, cast
+from typing import Any, Iterator, Literal, cast
 
 import parse  # type: ignore
 
+from ..base import BaseSolver
+
 
 @dataclass(frozen=True)
 class Reindeer:
@@ -13,7 +14,9 @@ class Reindeer:
     rest_time: int
 
 
-lines = sys.stdin.read().splitlines()
+class Solver(BaseSolver):
+    def solve(self, input: str) -> Iterator[Any]:
+        lines = input.splitlines()
 
         reindeers: list[Reindeer] = []
         for line in lines:
@@ -26,7 +29,9 @@ for line in lines:
                 ),
             )
             reindeers.append(
-        Reindeer(name=reindeer, speed=speed, fly_time=speed_time, rest_time=rest_time)
+                Reindeer(
+                    name=reindeer, speed=speed, fly_time=speed_time, rest_time=rest_time
+                )
             )
 
         target = 1000 if len(reindeers) <= 2 else 2503
@@ -37,7 +42,7 @@ states: dict[Reindeer, tuple[Literal["resting", "flying"], int]] = {
         distances: dict[Reindeer, int] = {reindeer: 0 for reindeer in reindeers}
         points: dict[Reindeer, int] = {reindeer: 0 for reindeer in reindeers}
 
-for time in range(target):
+        for time in self.progress.wrap(range(target)):
             for reindeer in reindeers:
                 if states[reindeer][0] == "flying":
                     distances[reindeer] += reindeer.speed
@@ -54,9 +59,5 @@ for time in range(target):
                     else:
                         states[reindeer] = ("resting", time + reindeer.rest_time)
 
-
+        yield max(distances.values())
-answer_1 = max(distances.values())
+        yield max(points.values()) - 1
-print(f"answer 1 is {answer_1}")
-
-answer_2 = max(points.values()) - 1
-print(f"answer 2 is {answer_2}")

src/holt59/aoc/2015/day15.py

@@ -1,9 +1,10 @@
 import math
-import sys
+from typing import Any, Iterator, Sequence, cast
-from typing import Sequence, cast
 
 import parse  # type: ignore
 
+from ..base import BaseSolver
+
 
 def score(ingredients: list[list[int]], teaspoons: Sequence[int]) -> int:
     return math.prod(
@@ -18,7 +19,9 @@ def score(ingredients: list[list[int]], teaspoons: Sequence[int]) -> int:
     )
 
 
-lines = sys.stdin.read().splitlines()
+class Solver(BaseSolver):
+    def solve(self, input: str) -> Iterator[Any]:
+        lines = input.splitlines()
 
         ingredients: list[list[int]] = []
         for line in lines:
@@ -49,9 +52,5 @@ for a in range(total_teaspoons + 1):
                         )
                     )
 
-
+        yield max(scores)
-answer_1 = max(scores)
+        yield max(score for score, calory in zip(scores, calories) if calory == 500)
-print(f"answer 1 is {answer_1}")
-
-answer_2 = max(score for score, calory in zip(scores, calories) if calory == 500)
-print(f"answer 2 is {answer_2}")

src/holt59/aoc/2015/day16.py

@@ -1,8 +1,9 @@
 import operator as op
 import re
-import sys
 from collections import defaultdict
-from typing import Callable
+from typing import Any, Callable, Iterator
+
+from ..base import BaseSolver
 
 MFCSAM: dict[str, int] = {
     "children": 3,
@@ -17,18 +18,10 @@ MFCSAM: dict[str, int] = {
     "perfumes": 1,
 }
 
-lines = sys.stdin.readlines()
 
-aunts: list[dict[str, int]] = [
+def match(
-    {
+    aunts: list[dict[str, int]], operators: dict[str, Callable[[int, int], bool]]
-        match[1]: int(match[2])
+) -> int:
-        for match in re.findall(R"((?P<compound>[^:, ]+): (?P<quantity>\d+))", line)
-    }
-    for line in lines
-]
-
-
-def match(operators: dict[str, Callable[[int, int], bool]]) -> int:
     return next(
         i
         for i, aunt in enumerate(aunts, start=1)
@@ -36,16 +29,29 @@ def match(operators: dict[str, Callable[[int, int], bool]]) -> int:
     )
 
 
-answer_1 = match(defaultdict(lambda: op.eq))
+class Solver(BaseSolver):
-print(f"answer 1 is {answer_1}")
+    def solve(self, input: str) -> Iterator[Any]:
+        lines = input.splitlines()
 
-answer_2 = match(
+        aunts: list[dict[str, int]] = [
+            {
+                match[1]: int(match[2])
+                for match in re.findall(
+                    R"((?P<compound>[^:, ]+): (?P<quantity>\d+))", line
+                )
+            }
+            for line in lines
+        ]
+
+        yield match(aunts, defaultdict(lambda: op.eq))
+
+        yield match(
+            aunts,
             defaultdict(
                 lambda: op.eq,
                 trees=op.gt,
                 cats=op.gt,
                 pomeranians=op.lt,
                 goldfish=op.lt,
+            ),
         )
-)
-print(f"answer 2 is {answer_2}")

src/holt59/aoc/2015/day17.py

@@ -1,5 +1,6 @@
-import sys
+from typing import Any, Iterator
-from typing import Iterator
+
+from ..base import BaseSolver
 
 
 def iter_combinations(value: int, containers: list[int]) -> Iterator[tuple[int, ...]]:
@@ -16,15 +17,18 @@ def iter_combinations(value: int, containers: list[int]) -> Iterator[tuple[int,
             yield (containers[i],) + combination
 
 
-containers = [int(c) for c in sys.stdin.read().split()]
+class Solver(BaseSolver):
+    def solve(self, input: str) -> Iterator[Any]:
+        containers = [int(c) for c in input.split()]
         total = 25 if len(containers) <= 5 else 150
 
-combinations = [combination for combination in iter_combinations(total, containers)]
+        combinations = [
+            combination for combination in iter_combinations(total, containers)
+        ]
 
-answer_1 = len(combinations)
+        yield len(combinations)
-print(f"answer 1 is {answer_1}")
 
         min_containers = min(len(combination) for combination in combinations)
-
+        yield sum(
-answer_2 = sum(1 for combination in combinations if len(combination) == min_containers)
+            1 for combination in combinations if len(combination) == min_containers
-print(f"answer 2 is {answer_2}")
+        )

src/holt59/aoc/2015/day18.py

@@ -1,10 +1,15 @@
 import itertools
-import sys
+from typing import Any, Iterator
 
 import numpy as np
 from numpy.typing import NDArray
 
-grid0 = np.array([[c == "#" for c in line] for line in sys.stdin.read().splitlines()])
+from ..base import BaseSolver
+
+
+class Solver(BaseSolver):
+    def solve(self, input: str) -> Iterator[Any]:
+        grid0 = np.array([[c == "#" for c in line] for line in input.splitlines()])
 
         # add an always off circle around
         grid0 = np.concatenate(
@@ -34,7 +39,6 @@ iis, jjs = iis.flatten(), jjs.flatten()
         ins = iis[:, None] + np.array(moves)[:, 0]
         jns = jjs[:, None] + np.array(moves)[:, 1]
 
-
         def game_of_life(grid: NDArray[np.bool_]) -> NDArray[np.bool_]:
             neighbors_on = grid[ins, jns].sum(axis=1)
             cells_on = grid[iis, jjs]
@@ -44,15 +48,12 @@ def game_of_life(grid: NDArray[np.bool_]) -> NDArray[np.bool_]:
 
             return grid
 
-
         grid = grid0
         n_steps = 4 if len(grid) < 10 else 100
         for _ in range(n_steps):
             grid = game_of_life(grid)
 
-answer_1 = grid.sum()
+        yield grid.sum()
-print(f"answer 1 is {answer_1}")
-
 
         n_steps = 5 if len(grid) < 10 else 100
         grid = grid0
@@ -62,5 +63,4 @@ for _ in range(n_steps):
 
         grid[[1, 1, -2, -2], [1, -2, 1, -2]] = True
 
-answer_2 = sum(cell for line in grid for cell in line)
+        yield sum(cell for line in grid for cell in line)
-print(f"answer 2 is {answer_2}")

src/holt59/aoc/2015/day19.py

@@ -1,7 +1,12 @@
-import sys
 from collections import defaultdict
+from typing import Any, Iterator
 
-replacements_s, molecule = sys.stdin.read().split("\n\n")
+from ..base import BaseSolver
+
+
+class Solver(BaseSolver):
+    def solve(self, input: str) -> Iterator[Any]:
+        replacements_s, molecule = input.split("\n\n")
 
         REPLACEMENTS: dict[str, list[str]] = defaultdict(list)
         for replacement_s in replacements_s.splitlines():
@@ -17,8 +22,7 @@ generated = [
             if molecule[i:].startswith(symbol)
         ]
 
-answer_1 = len(set(generated))
+        yield len(set(generated))
-print(f"answer 1 is {answer_1}")
 
         inversion: dict[str, str] = {
             replacement: symbol
@@ -51,6 +55,4 @@ while molecule != "e":
             # print(m2)
             molecule = m2
 
-
+        yield count
-answer_2 = count
-print(f"answer 2 is {count}")

src/holt59/aoc/2015/day2.py

@@ -1,20 +1,24 @@
-import sys
+from typing import Any, Iterator
 
 import numpy as np
 
-lines = sys.stdin.read().splitlines()
+from ..base import BaseSolver
 
+
+class Solver(BaseSolver):
+    def solve(self, input: str) -> Iterator[Any]:
         length, width, height = np.array(
-    [[int(c) for c in line.split("x")] for line in lines]
+            [[int(c) for c in line.split("x")] for line in input.splitlines()]
         ).T
 
         lw, wh, hl = (length * width, width * height, height * length)
 
-answer_1 = np.sum(2 * (lw + wh + hl) + np.min(np.stack([lw, wh, hl]), axis=0))
+        yield np.sum(2 * (lw + wh + hl) + np.min(np.stack([lw, wh, hl]), axis=0))
-print(f"answer 1 is {answer_1}")
 
-answer_2 = np.sum(
+        yield np.sum(
             length * width * height
-    + 2 * np.min(np.stack([length + width, length + height, height + width]), axis=0)
+            + 2
+            * np.min(
+                np.stack([length + width, length + height, height + width]), axis=0
+            )
         )
-print(f"answer 2 is {answer_2}")

src/holt59/aoc/2015/day20.py

@@ -1,10 +1,10 @@
 import itertools
-import sys
+from typing import Any, Iterator
 
-target = int(sys.stdin.read())
+from ..base import BaseSolver
 
 
-def presents(n: int, elf: int, max: int = target) -> int:
+def presents(n: int, elf: int, max: int) -> int:
     count = 0
     k = 1
     while k * k < n:
@@ -21,8 +21,9 @@ def presents(n: int, elf: int, max: int = target) -> int:
     return count
 
 
-answer_1 = next(n for n in itertools.count(1) if presents(n, 10) >= target)
+class Solver(BaseSolver):
-print(f"answer 1 is {answer_1}")
+    def solve(self, input: str) -> Iterator[Any]:
+        target = int(input)
 
-answer_2 = next(n for n in itertools.count(1) if presents(n, 11, 50) >= target)
+        yield next(n for n in itertools.count(1) if presents(n, 10, target) >= target)
-print(f"answer 2 is {answer_2}")
+        yield next(n for n in itertools.count(1) if presents(n, 11, 50) >= target)

src/holt59/aoc/2015/day21.py

@@ -1,7 +1,8 @@
 import itertools
-import sys
 from math import ceil
-from typing import TypeAlias
+from typing import Any, Iterator, TypeAlias
+
+from ..base import BaseSolver
 
 Modifier: TypeAlias = tuple[str, int, int, int]
 
@@ -33,7 +34,9 @@ RINGS: list[Modifier] = [
 ]
 
 
-lines = sys.stdin.read().splitlines()
+class Solver(BaseSolver):
+    def solve(self, input: str) -> Iterator[Any]:
+        lines = input.splitlines()
 
         player_hp = 100
 
@@ -41,7 +44,6 @@ boss_attack = int(lines[1].split(":")[1].strip())
         boss_armor = int(lines[2].split(":")[1].strip())
         boss_hp = int(lines[0].split(":")[1].strip())
 
-
         min_cost, max_cost = 1_000_000, 0
         for equipments in itertools.product(WEAPONS, ARMORS, RINGS, RINGS):
             if equipments[-1][0] != "" and equipments[-2] == equipments[-1]:
@@ -58,9 +60,5 @@ for equipments in itertools.product(WEAPONS, ARMORS, RINGS, RINGS):
             else:
                 max_cost = max(cost, max_cost)
 
-
+        yield min_cost
-answer_1 = min_cost
+        yield max_cost
-print(f"answer 1 is {answer_1}")
-
-answer_2 = max_cost
-print(f"answer 2 is {answer_2}")

src/holt59/aoc/2015/day22.py

@@ -1,8 +1,9 @@
 from __future__ import annotations
 
 import heapq
-import sys
+from typing import Any, Iterator, Literal, TypeAlias, cast
-from typing import Literal, TypeAlias, cast
+
+from ..base import BaseSolver
 
 PlayerType: TypeAlias = Literal["player", "boss"]
 SpellType: TypeAlias = Literal["magic missile", "drain", "shield", "poison", "recharge"]
@@ -155,7 +156,9 @@ def play(
     return winning_node
 
 
-lines = sys.stdin.read().splitlines()
+class Solver(BaseSolver):
+    def solve(self, input: str) -> Iterator[Any]:
+        lines = input.splitlines()
 
         player_hp = 50
         player_mana = 500
@@ -164,14 +167,17 @@ player_armor = 0
         boss_hp = int(lines[0].split(":")[1].strip())
         boss_attack = int(lines[1].split(":")[1].strip())
 
-answer_1 = sum(
+        yield sum(
             c
-    for _, c in play(player_hp, player_mana, player_armor, boss_hp, boss_attack, False)
+            for _, c in play(
+                player_hp, player_mana, player_armor, boss_hp, boss_attack, False
+            )
         )
-print(f"answer 1 is {answer_1}")
 
         # 1242 (not working)
-answer_2 = sum(
+        yield sum(
-    c for _, c in play(player_hp, player_mana, player_armor, boss_hp, boss_attack, True)
+            c
+            for _, c in play(
+                player_hp, player_mana, player_armor, boss_hp, boss_attack, True
+            )
         )
-print(f"answer 2 is {answer_2}")

src/holt59/aoc/2015/day3.py

@@ -1,7 +1,7 @@
-import sys
 from collections import defaultdict
+from typing import Any, Iterator
 
-line = sys.stdin.read().strip()
+from ..base import BaseSolver
 
 
 def process(directions: str) -> dict[tuple[int, int], int]:
@@ -27,8 +27,7 @@ def process(directions: str) -> dict[tuple[int, int], int]:
     return counts
 
 
-answer_1 = len(process(line))
+class Solver(BaseSolver):
-print(f"answer 1 is {answer_1}")
+    def solve(self, input: str) -> Iterator[Any]:
-
+        yield len(process(input))
-answer_2 = len(process(line[::2]) | process(line[1::2]))
+        yield len(process(input[::2]) | process(input[1::2]))
-print(f"answer 2 is {answer_2}")

src/holt59/aoc/2015/day4.py

@@ -1,16 +1,20 @@
 import hashlib
 import itertools
-import sys
+from typing import Any, Iterator
 
-line = sys.stdin.read().strip()
+from ..base import BaseSolver
 
+
+class Solver(BaseSolver):
+    def solve(self, input: str) -> Iterator[Any]:
         it = iter(itertools.count(1))
-answer_1 = next(
+        yield next(
-    i for i in it if hashlib.md5(f"{line}{i}".encode()).hexdigest().startswith("00000")
+            i
+            for i in it
+            if hashlib.md5(f"{input}{i}".encode()).hexdigest().startswith("00000")
         )
-print(f"answer 1 is {answer_1}")
+        yield next(
-
+            i
-answer_2 = next(
+            for i in it
-    i for i in it if hashlib.md5(f"{line}{i}".encode()).hexdigest().startswith("000000")
+            if hashlib.md5(f"{input}{i}".encode()).hexdigest().startswith("000000")
         )
-print(f"answer 2 is {answer_2}")

src/holt59/aoc/2015/day5.py

@@ -1,4 +1,6 @@
-import sys
+from typing import Any, Iterator
+
+from ..base import BaseSolver
 
 VOWELS = "aeiou"
 FORBIDDEN = {"ab", "cd", "pq", "xy"}
@@ -27,10 +29,8 @@ def is_nice_2(s: str) -> bool:
     return True
 
 
-lines = sys.stdin.read().splitlines()
+class Solver(BaseSolver):
-
+    def solve(self, input: str) -> Iterator[Any]:
-answer_1 = sum(map(is_nice_1, lines))
+        lines = input.splitlines()
-print(f"answer 1 is {answer_1}")
+        yield sum(map(is_nice_1, lines))
-
+        yield sum(map(is_nice_2, lines))
-answer_2 = sum(map(is_nice_2, lines))
-print(f"answer 2 is {answer_2}")

src/holt59/aoc/2015/day6.py

@@ -1,14 +1,16 @@
-import sys
+from typing import Any, Iterator, Literal, cast
-from typing import Literal, cast
 
 import numpy as np
 import parse  # type: ignore
 
-lines = sys.stdin.read().splitlines()
+from ..base import BaseSolver
 
+
+class Solver(BaseSolver):
+    def solve(self, input: str) -> Iterator[Any]:
         lights_1 = np.zeros((1000, 1000), dtype=bool)
         lights_2 = np.zeros((1000, 1000), dtype=int)
-for line in lines:
+        for line in input.splitlines():
             action, sx, sy, ex, ey = cast(
                 tuple[Literal["turn on", "turn off", "toggle"], int, int, int, int],
                 parse.parse("{} {:d},{:d} through {:d},{:d}", line),  # type: ignore
@@ -26,8 +28,5 @@ for line in lines:
                     lights_1[sx:ex, sy:ey] = ~lights_1[sx:ex, sy:ey]
                     lights_2[sx:ex, sy:ey] += 2
 
-answer_1 = lights_1.sum()
+        yield lights_1.sum()
-print(f"answer 1 is {answer_1}")
+        yield lights_2.sum()
-
-answer_2 = lights_2.sum()
-print(f"answer 2 is {answer_2}")

src/holt59/aoc/2015/day7.py

@@ -1,11 +1,7 @@
-import logging
 import operator
-import os
+from typing import Any, Callable, Iterator
-import sys
-from typing import Callable
 
-VERBOSE = os.getenv("AOC_VERBOSE") == "True"
+from ..base import BaseSolver
-logging.basicConfig(level=logging.INFO if VERBOSE else logging.WARNING)
 
 OPERATORS = {
     "AND": operator.and_,
@@ -36,7 +32,22 @@ def value_of(key: str) -> tuple[str, Callable[[dict[str, int]], int]]:
         return key, lambda values: values[key]
 
 
-lines = sys.stdin.read().splitlines()
+def process(
+    signals: Signals,
+    values: dict[str, int],
+) -> dict[str, int]:
+    while signals:
+        signal = next(s for s in signals if all(p in values for p in signals[s][0]))
+        _, deps, command = signals[signal]
+        values[signal] = command(deps[0](values), deps[1](values)) % 65536
+        del signals[signal]
+
+    return values
+
+
+class Solver(BaseSolver):
+    def solve(self, input: str) -> Iterator[Any] | None:
+        lines = input.splitlines()
 
         signals: Signals = {}
         values: dict[str, int] = {"": 0}
@@ -77,25 +88,9 @@ for line in lines:
 
                 signals[signal] = ((lhs_s, rhs_s), (lhs_fn, rhs_fn), op)
 
-
-def process(
-    signals: Signals,
-    values: dict[str, int],
-) -> dict[str, int]:
-    while signals:
-        signal = next(s for s in signals if all(p in values for p in signals[s][0]))
-        _, deps, command = signals[signal]
-        values[signal] = command(deps[0](values), deps[1](values)) % 65536
-        del signals[signal]
-
-    return values
-
-
         values_1 = process(signals.copy(), values.copy())
-logging.info("\n" + "\n".join(f"{k}: {values_1[k]}" for k in sorted(values_1)))
+        for k in sorted(values_1):
-answer_1 = values_1["a"]
+            self.logger.info(f"{k}: {values_1[k]}")
-print(f"answer 1 is {answer_1}")
+        yield values_1["a"]
 
-values_2 = process(signals.copy(), values | {"b": values_1["a"]})
+        yield process(signals.copy(), values | {"b": values_1["a"]})["a"]
-answer_2 = values_2["a"]
-print(f"answer 2 is {answer_2}")

src/holt59/aoc/2015/day8.py

@@ -1,14 +1,13 @@
-import logging
+from typing import Any, Iterator
-import os
-import sys
 
-VERBOSE = os.getenv("AOC_VERBOSE") == "True"
+from ..base import BaseSolver
-logging.basicConfig(level=logging.INFO if VERBOSE else logging.WARNING)
 
 
-lines = sys.stdin.read().splitlines()
+class Solver(BaseSolver):
+    def solve(self, input: str) -> Iterator[Any]:
+        lines = input.splitlines()
 
-answer_1 = sum(
+        yield sum(
             # left and right quotes (not in memory)
             2
             # each \\ adds one character in the literals (compared to memory)
@@ -21,9 +20,8 @@ answer_1 = sum(
             + 3 * (line.count(R"\x") - line.count(R"\\x") + line.count(R"\\\x"))
             for line in lines
         )
-print(f"answer 1 is {answer_1}")
 
-answer_2 = sum(
+        yield sum(
             # needs to wrap in quotes (2 characters)
             2
             # needs to escape every \ with an extra \
@@ -32,4 +30,3 @@ answer_2 = sum(
             + line.count('"')
             for line in lines
         )
-print(f"answer 2 is {answer_2}")

src/holt59/aoc/2015/day9.py

@@ -1,11 +1,15 @@
 import itertools
-import sys
 from collections import defaultdict
-from typing import cast
+from typing import Any, Iterator, cast
 
 import parse  # type: ignore
 
-lines = sys.stdin.read().splitlines()
+from ..base import BaseSolver
+
+
+class Solver(BaseSolver):
+    def solve(self, input: str) -> Iterator[Any]:
+        lines = input.splitlines()
 
         distances: dict[str, dict[str, int]] = defaultdict(dict)
         for line in lines:
@@ -20,8 +24,5 @@ distance_of_routes = {
             for route in map(tuple, itertools.permutations(distances))
         }
 
-answer_1 = min(distance_of_routes.values())
+        yield min(distance_of_routes.values())
-print(f"answer 1 is {answer_1}")
+        yield max(distance_of_routes.values())
-
-answer_2 = max(distance_of_routes.values())
-print(f"answer 2 is {answer_2}")

src/holt59/aoc/__main__.py

@@ -178,7 +178,14 @@ def main():
 
     start = datetime.now()
     last = start
-    for i_answer, answer in enumerate(solver.solve(data.strip())):
+
+    it = solver.solve(data.strip())
+
+    if it is None:
+        solver.logger.error(f"no implementation for {year} day {day}")
+        exit()
+
+    for i_answer, answer in enumerate(it):
         current = datetime.now()
 
         if api:

src/holt59/aoc/base.py

@@ -7,10 +7,12 @@ _T = TypeVar("_T")
 
 class ProgressHandler(Protocol):
     @overload
-    def wrap(self, values: Sequence[_T]) -> Iterator[_T]: ...
+    def wrap(self, values: Sequence[_T]) -> Iterator[_T]:
+        ...
 
     @overload
-    def wrap(self, values: Iterable[_T], total: int) -> Iterator[_T]: ...
+    def wrap(self, values: Iterable[_T], total: int) -> Iterator[_T]:
+        ...
 
 
 class BaseSolver:
@@ -31,4 +33,5 @@ class BaseSolver:
         self.outputs = outputs
 
     @abstractmethod
-    def solve(self, input: str) -> Iterator[Any]: ...
+    def solve(self, input: str) -> Iterator[Any] | None:
+        ...