⭐ Advent of Code - Python ⭐

Source Code: https://github.com/nekeal/advent-of-code-python-cli

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Installation

This project comes as a standalone python package with a CLI tool to help you with boilerplate code and basic tasks. Recommended way to use it is via pipx or uvx:

pipx run --spec aoc-python-cli aoccli

or

uvx --from aoc-python-cli aoccli

Alternatively, you can install it with pip in the same virtualenv as you are using for your solutions:

pip install aoc-python-cli

Use this project as a template

In the master branch I will keep the template with sample day 0 solution. Therefore, I strongly recommend to use this branch as a template for your own solutions by forking this repository or working with a copy of it.

Usage

This template comes with a CLI tool powered by Typer to help you with boilerplate code and basic tasks like creating a directory for a new day, running tests, etc.

Note

To use the CLI tool you need to install requirements. For details see Development section.

Starting solution for a new day

aoc new-day <day>

It will create a aoc_solutions/<year>/day_<day> directory with a __init__.py and a test_solution.py python files. It will also create text files for both test and real data in the data/ directory.

You can specify custom data and solutions directories with ---data-directory and --directory flags.

aoccli new-day --data-directory input_data -d advent_solutions 1

This command will create the following directory structure relatively to the current working directory:

input_data
└── <current_year>
    ├── 01_input.txt
    └── 01_test_input.txt
aoc_solutions
└── <current_year>
    └── day_05
        ├── __init__.py
        └── test_solution.py

Note

Alternatively you can provide a path to template directory aoc new-day <day> -t /path/to/template/directory that will be copied to the new day directory. This can be useful if you already have a template for your solutions. However, by using this option you will lose the ability to run, verify, and submit a challenge from the CLI tool.

NEW! Downloading input data

Now this template uses advent-of-code-data package to download your personal input data. To use it you need to set AOC_SESSION environment variable to your session cookie value. You can find it in your browser's dev tools after logging in to the Advent of Code website.

Implementing a solution for a day

BaseChallenge class is provided to help you with the boilerplate code. By default, each day's solution inherits from this class. You need to implement the part1 and part2 methods, and they should return the correct answer for each part.

Running solution and checking the answer

This will usually be used for debugging purposes.

$ aoc run 0
Using data from 00_input.txt
Day 0 - Part 1: 1
Day 0 - Part 2: 55

This command will run the solution for the given day using data/<year>/00_input.txt file and print the answers for both parts.

If you want to see the result only for the test data, you can use the -t/--test-data flag.

$ aoc run <day> -t
Using data from 00_test_input.txt
Day 0 - Part 1: 1
Day 0 - Part 2: 10

Alternatively you can also specify the path to the input file instead of using the default one.

$ aoc run 0 -f custom_input.txt
Using data from custom_input.txt                                                                                                        hello, nekeal ⭐
Day 0 - Part 1: 1
Using data from custom_input.txt
Day 0 - Part 2: 33

Verifying solution

You can verify your solution by running pytest tests. There is a generic test case for each day that checks both parts of a solution against the correct answer. To use it you need to configure correct answers on the test class for a given day. command will run the solution for the given day using data/00_input.txt file and print the answers for both parts.

class TestChallenge(BaseTestChallenge):
    challenge_class = Challenge
    expected_results_from_test_data = ("Expected result for part 1", "Expected result for part 2")
    expected_results_from_real_data = ("Expected result for part 1", "Expected result for part 2")

Then you can run the tests for a given day with:

aoc verify <day>

To test only part 1 or part 2, you can use the -1/-2 flag.

aoc verify <day> -1

To test only for sample data, you can use the -t/--test-data-only flag.

aoc verify <day> -t

To check for a regression (😉) you can run all tests at once:

aoc verify

Running tests after each change

If you don't like the idea of running tests manually, there is a pre-installed pytest-watcher package that will run tests for you after each change in the code.

ptw aoc_solutions

Submitting solution

Thanks to advent-of-code-data package, you can submit your solution directly from the command line.

aoc submit <day> <part>

Under the hood, it will run the solution for the given day and part, and submit the answer to the Advent of Code website.

Development

• Clone this repository
• Requirements:
  • Poetry
  • Python 3.11+
• Create a virtual environment and install dependencies

poetry install

• Activate the virtual environment

poetry shell

Testing

aoc verify

Pre-commit

Pre-commit hooks run all the auto-formatting (ruff format), linters (e.g. ruff and mypy), and other quality checks to make sure the changeset is in good shape before a commit/push happens.

You can install hooks with (runs for each commit):

pre-commit install

Or if you want to run all checks manually for all files:

pre-commit run --all-files

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This project was generated using the cookiecutter-python-package template.