mypy_boto3_builder

Type annotations builder for boto3-stubs project. Compatible with VSCode, PyCharm, Emacs, Sublime Text, mypy, pyright and other tools.

See how it helps to find and fix potential bugs:

Do you want more? Check the documentation and use boto3 like a pro!

• mypy_boto3_builder
  • Using boto3-stubs
  • How to build type annotations
    • Locally
    • With Docker image
  • Development
  • Versioning
  • Latest changes
  • Thank you
    • Toolset
    • Contributors

Using boto3-stubs

Check boto3-stubs project for installation and usage instructions.

If you use VSCode, add AWS Boto3 extension to your VSCode and run AWS boto3: Quick Start command.

If not, just install boto3-stubs with pip:

python -m pip install 'boto3-stubs[all]'

# do not forget to install mypy or pyright

And you should already have auto-complete and type checking in your IDE! You can stop reading now.

THe rest of this document is about building boto3-stubs manually. For example, if you want to use the latest features for an older boto3 version.

How to build type annotations

Locally

# Install preferred version of `boto3`
python -m pip install boto3==1.16.25 botocore==1.19.25

# Install `mypy-boto3-builder`
python -m pip install mypy-boto3-builder

# Build all packages in mypy_boto3_output directory
python -m mypy_boto3_builder mypy_boto3_output

# Or specify required services explicitly
python -m mypy_boto3_builder mypy_boto3_output -s ec2 s3

# Install custom `boto3-stubs` packages
cd mypy_boto3_output
python -m pip install -e ./mypy_boto3_ec2_package
python -m pip install -e ./mypy_boto3_s3_package
python -m pip install -e ./boto3_stubs_package

With Docker image

• Install Docker
• Pull latest mypy_boto3_builder version and tag it

docker pull docker.pkg.github.com/vemel/mypy_boto3_builder/mypy_boto3_builder_stable:latest
docker tag docker.pkg.github.com/vemel/mypy_boto3_builder/mypy_boto3_builder_stable:latest mypy_boto3_builder

• Generate stubs in output directory

mkdir output

# generate stubs for all services
docker run -v `pwd`/output:/output -ti mypy_boto3_builder_stable

# generate stubs for s3 service
docker run -v `pwd`/output:/output -ti mypy_boto3_builder_stable -s s3

# generate stubs for a specific boto3 version
docker run -e BOTO3_VERSION=1.16.25 BOTOCORE_VERSION=1.19.25 -v `pwd`/output:/output -ti mypy_boto3_builder_stable

• Install packages from output directory as described above

Development

• Install Python 3.10+, ideally with pyenv
• Install poetry: pip install poetry
• Install dependencies: poetry install
• Use scripts for repo to check if everything works: ./scripts/build.sh
• Run manual pre-commit: ./scripts/before_commit.sh

Versioning

mypy_boto3_builder version is not related to boto3 version and follows PEP 440.

Latest changes

Full changelog can be found in Releases.

Thank you

Toolset

• black developers for an awesome formatting tool
• Timothy Edmund Crosley for isort and how flexible it is
• mypy developers for doing all dirty work for us
• pyright team for the new era of typed Python

Contributors

• Allie Fitter, author of original boto3-type-annotations
• jbpratt
• Chris Hollinworth
• Yoan Blanc
• Kostya Leschenko
• pyto86
• Ashton Honnecke
• Mike Carey
• Ole-Martin Bratteng