2015/day03: Complete!

Also add Justfile and pytest

.woodpecker.yml

@@ -8,6 +8,11 @@ pipeline:
             branch: main
         commands:
             - apk add --no-cache python3 poetry just
+            - echo "===== 2015 ====="
+            - cd 2015
+            - poetry install --no-interaction --no-root
+            - just
+            - cd ..
             - echo "===== 2022 ====="
             - cd 2022
             - poetry install --no-interaction --no-root

2015/Justfile

@@ -0,0 +1,12 @@
+
+# check
+default: check
+
+# show this help (just --list)
+help:
+    just --list
+
+# lint and run tests
+check:
+    poetry run black . --check
+    poetry run pytest

2015/day01_test.py

@@ -0,0 +1,11 @@
+#!/usr/bin/env python3
+
+from day01 import *
+
+
+def test_part1() -> None:
+    assert part1() == 74
+
+
+def test_part2() -> None:
+    assert part2() == 1795

2015/day02_test.py

@@ -0,0 +1,11 @@
+from day02 import *
+
+
+def test_part1() -> None:
+    with open("day02.txt", "r") as f:
+        assert part1(f) == 1598415
+
+
+def test_part2() -> None:
+    with open("day02.txt", "r") as f:
+        assert part2(f) == 3812909

2015/day03.py

@@ -0,0 +1,64 @@
+#!/usr/bin/env python3
+
+from typing import TextIO
+
+grid: dict[tuple[int, int], bool] = {(0, 0): True}
+instr: dict[str, tuple[int, int]] = {
+    ">": (0, 1),
+    "<": (0, -1),
+    "^": (1, 0),
+    "v": (-1, 0),
+}
+
+f = open("day03.txt", "r")
+
+directions = f.read().strip()
+
+
+def part1() -> int:
+    houses = 1
+    current = (0, 0)
+
+    for char in directions:
+        current = (current[0] + instr[char][0], current[1] + instr[char][1])
+
+        if current not in grid:
+            grid[current] = True
+            houses += 1
+
+    return houses
+
+
+def part2() -> int:
+    # reset grid
+    grid = {(0, 0): True}
+    houses = 1
+    current_santa = (0, 0)
+    current_robo = (0, 0)
+
+    for i in range(0, len(directions), 2):
+        current_santa = (
+            current_santa[0] + instr[directions[i]][0],
+            current_santa[1] + instr[directions[i]][1],
+        )
+
+        if current_santa not in grid:
+            grid[current_santa] = True
+            houses += 1
+
+        if i + 1 < len(directions):
+            current_robo = (
+                current_robo[0] + instr[directions[i + 1]][0],
+                current_robo[1] + instr[directions[i + 1]][1],
+            )
+
+            if current_robo not in grid:
+                grid[current_robo] = True
+                houses += 1
+
+    return houses
+
+
+if __name__ == "__main__":
+    print(part1())
+    print(part2())

2015/day03_test.py

@@ -0,0 +1,11 @@
+#!/usr/bin/env python3
+
+from day03 import *
+
+
+def test_part1() -> None:
+    assert part1() == 2572
+
+
+def test_part2() -> None:
+    assert part2() == 2631

2015/poetry.lock

@@ -0,0 +1,182 @@
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+
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+pathspec = ">=0.9.0"
+platformdirs = ">=2"
+
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+d = ["aiohttp (>=3.7.4)"]
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+
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+
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+python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,!=3.5.*,!=3.6.*,>=2.7"
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+category = "dev"
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+python-versions = ">=3.7"
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+optional = false
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+test = ["appdirs (==1.4.4)", "covdefaults (>=2.3)", "pytest (>=7.3.1)", "pytest-cov (>=4)", "pytest-mock (>=3.10)"]
+
+[[package]]
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+version = "1.0.0"
+description = "plugin and hook calling mechanisms for python"
+category = "dev"
+optional = false
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+testing = ["pytest", "pytest-benchmark"]
+
+[[package]]
+name = "pytest"
+version = "7.3.1"
+description = "pytest: simple powerful testing with Python"
+category = "dev"
+optional = false
+python-versions = ">=3.7"
+files = [
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+
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+iniconfig = "*"
+packaging = "*"
+pluggy = ">=0.12,<2.0"
+
+[package.extras]
+testing = ["argcomplete", "attrs (>=19.2.0)", "hypothesis (>=3.56)", "mock", "nose", "pygments (>=2.7.2)", "requests", "xmlschema"]
+
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+lock-version = "2.0"
+python-versions = "^3.11"
+content-hash = "beb5dcfb46062aa779a7f4e4e5bd6683462ef0051a36c57addc8bcbc86a0e8aa"

2015/pyproject.toml

@@ -0,0 +1,18 @@
+[tool.poetry]
+name = "2015"
+version = "0.1.0"
+description = ""
+authors = ["Your Name <you@example.com>"]
+readme = "README.md"
+
+[tool.poetry.dependencies]
+python = "^3.11"
+
+
+[tool.poetry.group.dev.dependencies]
+black = "^23.3.0"
+pytest = "^7.3.1"
+
+[build-system]
+requires = ["poetry-core"]
+build-backend = "poetry.core.masonry.api"