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Description:

pyright 1.1.381

Pyright for Python

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.
Installation
Use the package manager pip to install pyright.
pip install pyright

Usage
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.
Pre-commit
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: v1.1.381
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"

Motivation
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.
How Pyright for Python Works
This project works by first checking if node is in the PATH. If it is not, then we download node at runtime using nodeenv, then install the pyright npm package using npm and finally, run the downloaded JS with node.
Automatically keeping pyright up to date
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.
Configuration
You can configure Pyright for Python using environment variables.
Debugging
Set PYRIGHT_PYTHON_DEBUG to any value.
Modify Pyright Version
Set PYRIGHT_PYTHON_FORCE_VERSION to the desired version, e.g. 1.1.156, latest
Keeping Pyright and Pylance in sync
Set PYRIGHT_PYTHON_PYLANCE_VERSION to your Pylance version, e.g. 2023.11.11, latest-release, latest-prerelease. The corresponding Pyright version will be used. See Pylance's changelog for details on recent releases. Note that PYRIGHT_PYTHON_FORCE_VERSION takes precedence over PYRIGHT_PYTHON_PYLANCE_VERSION, so you'll want to set one or the other, not both.
Show NPM logs
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.
Modify NPM Package Location
Pyright for Python will resolve the root cache directory by checking the following environment variables, in order:

PYRIGHT_PYTHON_CACHE_DIR
XDG_CACHE_HOME

If neither of them are set it defaults to ~/.cache
Force Node Env
Set PYRIGHT_PYTHON_GLOBAL_NODE to any non-truthy value, i.e. anything apart from 1, t, on, or true.
e.g. off
You can optionally choose the version of node used by setting PYRIGHT_PYTHON_NODE_VERSION to the desired version
Modify Node Env Location
Set PYRIGHT_PYTHON_ENV_DIR to a valid nodeenv directory. e.g. ~/.cache/nodeenv
Ignore Warnings
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)

There is a new Pyright version available.

Contributing
All pull requests are welcome.
License
MIT