icefall/docs/source/contributing/code-style.rst
2023-10-19 00:13:50 +08:00

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.. _follow the code style:
Follow the code style
=====================
We use the following tools to make the code style to be as consistent as possible:
- `black <https://github.com/psf/black>`_, to format the code
- `flake8 <https://github.com/PyCQA/flake8>`_, to check the style and quality of the code
- `isort <https://github.com/PyCQA/isort>`_, to sort ``imports``
The following versions of the above tools are used:
- ``black == 22.3.0``
- ``flake8 == 5.0.4``
- ``isort == 5.10.1``
After running the following commands:
.. code-block::
$ git clone https://github.com/k2-fsa/icefall
$ cd icefall
$ pip install pre-commit
$ pre-commit install
it will run the following checks whenever you run ``git commit``, **automatically**:
.. figure:: images/pre-commit-check.png
:width: 600
:align: center
pre-commit hooks invoked by ``git commit`` (Failed).
If any of the above checks failed, your ``git commit`` was not successful.
Please fix any issues reported by the check tools.
.. HINT::
Some of the check tools, i.e., ``black`` and ``isort`` will modify
the files to be committed **in-place**. So please run ``git status``
after failure to see which file has been modified by the tools
before you make any further changes.
After fixing all the failures, run ``git commit`` again and
it should succeed this time:
.. figure:: images/pre-commit-check-success.png
:width: 600
:align: center
pre-commit hooks invoked by ``git commit`` (Succeeded).
If you want to check the style of your code before ``git commit``, you
can do the following:
.. code-block:: bash
$ pre-commit install
$ pre-commit run
Or without installing the pre-commit hooks:
.. code-block:: bash
$ cd icefall
$ pip install black==22.3.0 flake8==5.0.4 isort==5.10.1
$ black --check your_changed_file.py
$ black your_changed_file.py # modify it in-place
$
$ flake8 your_changed_file.py
$
$ isort --check your_changed_file.py # modify it in-place
$ isort your_changed_file.py