This project is not affiliated with Microsoft in any way, shape, or form
Pyright for Python is a Python command-line wrapper over pyright, a static type checker for Python.
Use the package manager pip to install pyright.
pip install pyright
Pyright can be invoked using two different methods
pyright --help
or
python3 -m pyright --help
Pyright for Python should work exactly the same as pyright does, see the pyright documentation for details on how to make use of pyright.
You can also setup pyright to run automatically before each commit by setting up pre-commit and registering pyright in your .pre-commit-config.yaml
file
repos:
- repo: https://github.com/RobertCraigie/pyright-python
rev: v1.1.237
hooks:
- id: pyright
Pre-commit will install pyright-python in its own virtual environment which can cause pyright to not be able to detect your installed dependencies.
To fix this you can either tell pre-commit to also install those dependencies or explicitly tell pyright which virtual environment to use by updating your pyright configuration file:
[tool.pyright]
# ...
venvPath = "."
venv = ".venv"
Pyright is written in TypeScript, requiring node to be installed, and is normally installed with npm. This could be an entry barrier for some Python developers as they may not have node or npm installed on their machine; I wanted to make pyright as easy to install as any normal Python package.
This project works by first checking if node is in the PATH
. If it is not, then we download node at runtime using nodeenv and then install the pyright npm package using npx
.
We also automatically upgrade the pyright npm package to its latest version on every run, see below for how to change this behaviour.
By default Pyright for Python is set to target a specific pyright version and new releases will be automatically created whenever a new pyright version is released. It is highly recommended to use an automatic dependency update tool such as dependabot.
If you would rather not have to update your installation every time a new pyright release is created then you can automatically use the latest available pyright version by setting the environment variable PYRIGHT_PYTHON_FORCE_VERSION
to latest
.
You can configure Pyright for Python using environment variables.
Set PYRIGHT_PYTHON_DEBUG
to any value.
Set PYRIGHT_PYTHON_FORCE_VERSION
to the desired version, e.g. 1.1.156
, latest
By default, Pyright for Python disables npm error messages, if you want to display the npm error messages then set PYRIGHT_PYTHON_VERBOSE
to any truthy value.
Set PYRIGHT_PYTHON_GLOBAL_NODE
to any non-truthy value, i.e. anything apart from 1, t, on, or true.
e.g. off
Set PYRIGHT_PYTHON_ENV_DIR
to a valid nodeenv directory. e.g. ~/.cache/nodeenv
Set PYRIGHT_PYTHON_IGNORE_WARNINGS
to a truthy value, e.g. 1, t, on, or true.
Pyright for Python will print warnings for the following case(s)
- Using nodeenv without bash available
By default, Pyright for Python checks the version of the resolved npx
binary, in some cases this can cause an error.
If this is the case for you, then you can disable the version check by setting the environment variable PYRIGHT_PYTHON_IGNORE_NPX_CHECK
to any truthy value, e.g. 1, t, on or true.
All pull requests are welcome.