Testing

First, install dev dependencies:

poetry install --with dev

To run all tests, you'll need to install multiple Python interpreters. On a modern Ubuntu distribution you can use add-apt-repository ppa:deadsnakes/ppa.

Depending on if you can install the wheels directly for your OS, you may need the libraries to build PIL, too. Here's the Ubuntu commands:

sudo apt-get install build-essential python-dev python3-dev
sudo apt-get install libjpeg8-dev zlib1g-dev

Here's the OSX Homebrew command:

brew install libjpeg libtiff little-cms2 openjpeg webp

Finally, just run tox:

poetry run tox
# or
poetry shell
tox

If you want, you can test against a specific version like this: tox -e py312-pil

Linting

Run ruff to check formatting:

ruff format qrcode

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