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Developer Guide

If you have not already, please review CONTRIBUTING.md for more complete information on expectations for contributions.

Developer quickstart

Setting up the Python virtual environment

Developers must use Python 3.11 and create a virtual environment using one of the requirements.txt files in the requirements/ directory in order to make contributions to this project. Ensure that you have Python 3.11 installed and that it is available in your PATH, and then identify the requirements file that you want to use:

Filename OS Architecture Tensorflow PyTorch
linux-amd64-py3.11-requirements-dev.txt Linux x86-64 ❌ ❌
linux-amd64-py3.11-requirements-dev-tensorflow.txt Linux x86-64 ✅ ❌
linux-amd64-py3.11-requirements-dev-pytorch.txt Linux x86-64 ❌ ✅
linux-arm64-py3.11-requirements-dev.txt Linux arm64 ❌ ❌
linux-arm64-py3.11-requirements-dev-tensorflow.txt Linux arm64 ✅ ❌
linux-arm64-py3.11-requirements-dev-pytorch.txt Linux arm64 ❌ ✅
macos-amd64-py3.11-requirements-dev.txt MacOS x86-64 ❌ ❌
macos-amd64-py3.11-requirements-dev-tensorflow.txt MacOS x86-64 ✅ ❌
macos-amd64-py3.11-requirements-dev-pytorch.txt MacOS x86-64 ❌ ✅
macos-arm64-py3.11-requirements-dev.txt MacOS arm64 ❌ ❌
macos-arm64-py3.11-requirements-dev-tensorflow.txt MacOS arm64 ✅ ❌
macos-arm64-py3.11-requirements-dev-pytorch.txt MacOS arm64 ❌ ✅
win-amd64-py3.11-requirements-dev.txt Windows x86-64 ❌ ❌
win-amd64-py3.11-requirements-dev-tensorflow.txt Windows x86-64 ✅ ❌
win-amd64-py3.11-requirements-dev-pytorch.txt Windows x86-64 ❌ ✅

Next, use the venv module to create a new virtual environment:

python -m venv .venv

Activate the virtual environment after creating it. To activate it on MacOS/Linux:

source .venv/bin/activate

To activate it on Windows:

.venv\Scripts\activate

Next, upgrade pip and install pip-tools:

python -m pip install --upgrade pip pip-tools

Finally, use pip-sync to install the dependencies in your chosen requirements file and install dioptra in development mode. On MacOS/Linux:

# Replace "linux-amd64-py3.11-requirements-dev.txt" with your chosen file
pip-sync requirements/linux-amd64-py3.11-requirements-dev.txt

On Windows:

# Replace "win-amd64-py3.11-requirements-dev.txt" with your chosen file
pip-sync requirements\win-amd64-py3.11-requirements-dev.txt

If the requirements file you used is updated, or if you want to switch to another requirements file (you need access to the Tensorflow library, for example), just run pip-sync again using the appropriate filename. It will install, upgrade, and uninstall all packages accordingly and ensure that you have a consistent environment.

Frontend development setup

For instructions on how to prepare the frontend development environment, see the src/frontend/README.md file

Building the documentation

This project uses Sphinx to generate the documentation published at https://pages.nist.gov/dioptra. To build the documentation locally, activate your virtual environment if you haven't already and run:

python -m tox run -e web-compile,docs

Alternatively, you can also use make to do this:

make docs

Reformatting code with black and isort

This project uses black and isort to automatically format Python code: Developers are expected to run black and isort over their contributions before opening a Pull Request. To do this, activate your virtual environment if you haven't already and run:

# Run black to reformat code
python -m tox run -e black -- src/dioptra task-plugins/dioptra_builtins tests

# Run isort to reformat import statements
python -m tox run -e isort -- src/dioptra task-plugins/dioptra_builtins tests

Alternatively, you can also use make to do this:

make beautify

Checking your code with flake8 and mypy

This project uses flake8 as a code linter and mypy to perform static type checking. Developers are expected to run flake8 and mypy and resolve all issues before opening a Pull Request. To do this, activate your virtual environment if you haven't already and run:

# Lint the code
python -m tox run -e flake8

# Perform static type checking
python -m tox run -e mypy

Alternatively, you can also use make to do this:

make code-check

Checking your commit message with gitlint

This project has a commit style guide that is enforced using the gitlint tool. Developers are expected to run gitlint and validate their commit message before opening a Pull Request. After commiting your contribution, activate your virtual environment if you haven't already and run:

python -m tox run -e gitlint

Alternatively, you can also use make to do this:

make commit-check

Running unit tests with pytest

This project stores its unit tests in the tests/ folder and runs them using pytest. Developers are expected to create new unit tests to validate any new features or behavior that they contribute and to verify that all unit tests pass before opening a Pull Request. To run the unit tests, activate your virtual environment if you haven't already and run:

python -m tox run -e py311-pytest -- tests/unit
python -m tox run -e py311-cookiecutter

Alternatively, you can also use make to do this:

make tests-unit

Cleanup

Run the following to clear away the project's temporary files, which includes the sentinel dotfiles that are created in build/ when using make:

make clean