Phonon code mainly written in python. Phonopy user documentation is found at http://phonopy.github.io/phonopy/

See https://phonopy.github.io/phonopy/install.html.

See requirements.txt. Optionally symfc, scipy and seekpath are required for using additional features.

Usual phonopy questions should be sent to phonopy mailing list (https://sourceforge.net/p/phonopy/mailman/).

The development of phonopy is managed on the develop branch of github phonopy repository.

• Github issues is the place to discuss about phonopy issues.
• Github pull request is the place to request merging source code.

Formatting rules are found in pyproject.toml.

Pre-commit (https://pre-commit.com/) is mainly used for applying the formatting rules automatically. Therefore, it is strongly encouraged to use it at or before git-commit. Pre-commit is set-up and used in the following way:

• Installed by pip install pre-commit, conda install pre_commit or see https://pre-commit.com/#install.
• pre-commit hook is installed by pre-commit install.
• pre-commit hook is run by pre-commit run --all-files.

Unless running pre-commit, pre-commit.ci may push the fix at PR by github action. In this case, the fix should be merged by the contributor's repository.

• Not strictly, but VSCode's settings.json may be written like below

  "ruff.lint.args": [
      "--config=${workspaceFolder}/pyproject.toml",
  ],
  "[python]": {
      "editor.defaultFormatter": "charliermarsh.ruff",
      "editor.codeActionsOnSave": {
          "source.organizeImports": "explicit"
      }
  },

Phonopy user documentation is written using python sphinx. The source files are stored in doc directory. Please see how to write the documentation at doc/README.md.

Tests are written using pytest. To run tests, pytest has to be installed. The tests can be run by

% pytest