Ansys pre-commit hooks#

This Ansys repository contains pre-commit hooks for different purposes. Currently, these hooks are available:

add-license-headers: Add missing license headers to files by using REUSE . To use this hook, you must have REUSE implemented in your repository.
tech-review: Do a technical review of your repository according to Ansys repository requirements

`add-license-headers` setup#

Add required directories#

If you are using the ansys.jinja2 template and MIT.txt license, skip this step. By default, the hook will make symbolic links from its “assets” directory containing LICENSES/MIT.txt and .reuse/templates/ansys.jinja2 to your repository when the hook runs. The .reuse and LICENSES directories will be deleted once the hook is done running.

If you are using a custom template, create a directory named .reuse, and if you are using a custom license, create a directory named LICENSES in the root of your repository. The custom template cannot be named ansys.jinja2, otherwise it will be removed after the hook is done running. The custom license cannot be named MIT.txt for the same reason. The .reuse and/or LICENSES directories will have to be committed to your repository and will not be removed once the hook is done running as long as there are custom templates or licenses in those directories. Your project should have the following layout:

project
├── LICENCES
│   └── license_name.txt
├── .reuse
│   └── templates
│       └── template_name.jinja2
├── src
├── examples
├── tests
├── .pre-commit-config.yaml
├── pyproject.toml

Where license_name is the name of the license that is being used, for example, MIT.txt, and template_name is the name of the custom template being used. The jinja2 file contains the template for the license headers that are added to the files.

Licenses that are supported by REUSE can be found in the spdx/license-list-data repository. Please select a license text file from that repository, and copy it to the LICENSES directory.

Set custom arguments#

- repo: https://github.com/ansys/pre-commit-hooks
  rev: v0.4.4
  hooks:
  - id: add-license-headers
    args: ["--custom_copyright", "custom copyright phrase", "--custom_template", "template_name", "--custom_license", "license_name", "--ignore_license_check", "--start_year", "2023"]

args can also be formatted as follows:

args:
- --custom_copyright=custom copyright phrase
- --custom_template=template_name
- --custom_license=license_name
- --ignore_license_check
- --start_year=2023

custom copyright phrase is the copyright line you want to include in the license header. By default, it uses "ANSYS, Inc. and/or its affiliates.".
template_name is the name of the .jinja2 file located in .reuse/templates/. By default, it uses ansys.
license_name is the name of the license being used. For example, MIT, ECL-1.0, etc. To view a list of licenses that are supported by REUSE, see spdx/license-list-data. By default it uses MIT.
ignore_license_check is whether or not to check for the license in the header. By default, it is False, meaning the files are checked for both the copyright and licensing information in the header. Add --ignore_license_check to ignore checking for licensing information in the files.
start_year is the start year of the copyright statement. By default, the start_year is the current year, making the copyright statement “Copyright (C) 2024 ANSYS, Inc. and/or its affiliates.” If you are adding license headers to packages released before the current year, add the start_year argument with the year your package was released. For example, if start_year is 2023, the copyright statement would be “Copyright (C) 2023 - 2024 ANSYS, Inc. and/or its affiliates.” assuming the current year is 2024.

Specify directories to run the hook on#

By default, the hook will run on proto files in any directory, as well as python files within directories named src, examples, and tests. To specify additional files and/or directories the hook should run on, add the necessary regex to the files line in your .pre-commit-config.yaml file:

- repo: https://github.com/ansys/pre-commit-hooks
  rev: v0.4.4
  hooks:
  - id: add-license-headers
    files: '(src|examples|tests|newFolder)/.*\.(py|newExtension)|\.(proto|newExtension)'

Ignore specific files or file types#

In .pre-commit-config.yaml:

- repo: https://github.com/ansys/pre-commit-hooks
  rev: v0.4.4
  hooks:
  - id: add-license-headers
    exclude: |
        (?x)^(
            path/to/file1.py |
            path/to/.*\.(ts|cpp) |
            (.folder1|folder2)/.* |
            .*\.js |
            \..* |
        )$

path/to/file1.py excludes the stated file.
path/to/.*\.(ts|cpp) excludes all .ts and .cpp files within the path/to directory.
(.folder1|folder2)/.* excludes directories named .folder1 and folder2.
.*\.js excludes all .js files in all directories.
\..* excludes all hidden files.

`tech-review` setup#

These are the default values for the arguments of the tech-review hook:

--author_maint_name=ANSYS, Inc.
--author_maint_email=pyansys.core@ansys.com
--license=MIT
--url=https://github.com/ansys/{repo-name}, replacing repo-name with the name of the repository

The --author_maint_name is the name of the author and maintainer in the pyproject.toml file. By default, it is “Ansys, Inc.”.

The --author_maint_email is the email of the author and maintainer in the pyproject.toml file. By default, it is “pyansys.core@ansys.com”.

The --license argument is the license that is being used by your repository. By default, it is MIT.

The --url argument is automatically rendered based on the repository name. If your repository is not in the Ansys organization, please add this argument to your configuration in .pre-commit-config.yaml.

The --product argument is required if a README.rst or README.md file does not exist in your repository and you want the template to render correctly. The product for PyMechanical would be mechanical, for example.

The --non_compliant_name flag can be used if your repository does not follow the typical naming convention of ansys-*-*.

Technical review hook in ansys/pre-commit-hooks’ .pre-commit-config.yaml file:

- repo: https://github.com/ansys/pre-commit-hooks
  rev: v0.4.4
  hooks:
  - id: tech-review
    args:
    - --product=pre_commit_hooks
    - --non_compliant_name

Technical review hook in PyMechanical’s .pre-commit-config.yaml file:

- repo: https://github.com/ansys/pre-commit-hooks
  rev: v0.4.4
  hooks:
  - id: tech-review
    args:
    - --product=mechanical

How to install#

The following sections provide instructions for installing the ansys-pre-commit-hooks package in two installation modes: user and developer.

For users#

Before installing the package, to ensure that you have the latest version of pip, run this command:

python -m pip install -U pip

Then, to install the package, run this command:

python -m pip install ansys-pre-commit-hooks

For developers#

Installing the package in developer mode allows you to modify and enhance the source code.

Before contributing to the project, ensure that you are familiar with the PyAnsys Developer’s Guide.

For a developer installation, you must follow these steps:

Clone the repository with this command:

git clone https://github.com/ansys/pre-commit-hooks

Create a fresh-clean Python environment and activate it with these commands:

# Create a virtual environment
python -m venv .venv

# Activate it in a POSIX system
source .venv/bin/activate

# Activate it in Windows CMD environment
.venv\Scripts\activate.bat

# Activate it in Windows Powershell
.venv\Scripts\Activate.ps1

Ensure that you have the latest required build system tools by running this command:
```
python -m pip install -U pip flit tox twine
```

Install the project in editable mode by running one of these commands:

# Install the minimum requirements
python -m pip install -e .

# Install the minimum + tests requirements
python -m pip install -e .[tests]

# Install the minimum + doc requirements
python -m pip install -e .[doc]

# Install all requirements
python -m pip install -e .[tests,doc]

Verify your development installation by running this command:
```
tox
```

How to test it#

This project takes advantage of tox. This tool automates common development tasks (similar to Makefile), but it is oriented towards Python development.

Using `tox`#

While Makefile has rules, tox has environments. In fact, tox creates its own virtual environment so that anything being tested is isolated from the project to guarantee the project’s integrity.

These environment commands are provided:

tox -e style: Checks for coding style quality.
tox -e py: Checks for unit tests.
tox -e py-coverage: Checks for unit testing and code coverage.
tox -e doc: Checks for successfully building the documentation.

Raw testing#

If required, you can always call style commands, such as black, isort, and flake8, or unit testing commands, such as pytest, from the command line. However, calling these commands does not guarantee that your project is being tested in an isolated environment, which is the reason why tools like tox exist.

A note on `pre-commit`#

The style checks take advantage of pre-commit. Developers are not forced but encouraged to install this tool by running this command:

python -m pip install pre-commit && pre-commit install

Documentation#

For building documentation, you can run the usual rules provided in the Sphinx Makefile with a command that is formatted like this:

make -C doc/ html && your_browser_name doc/html/index.html

However, the recommended way of checking documentation integrity is by running tox with a command that is formatted like this:

tox -e doc && your_browser_name .tox/doc_out/index.html

Distributing#

If you would like to create either source or wheel files, install the building requirements and then execute the build module with these commands:

python -m pip install .
python -m build
python -m twine check dist/*