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CONTRIBUTING.md

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Contributing to snowflake-snowpark-python

Hi, thank you for taking the time to improve Snowflake's Snowpark Python API!

I have a feature request, or a bug report to submit

Many questions can be answered by checking our docs or looking for already existing bug reports and enhancement requests on our issue tracker.

Please start by checking these first!

Nobody else had my idea/issue

In that case we'd love to hear from you! Please open a new issue to get in touch with us.

I'd like to contribute the bug fix or feature myself

We encourage everyone to first open a new issue to discuss any feature work or bug fixes with one of the maintainers. The following should help guide contributors through potential pitfalls.

Contributor License Agreement ("CLA")

We require our contributors to sign a CLA, available at https://github.com/snowflakedb/CLA/blob/main/README.md. A Github Actions bot will assist you when you open a pull request.

Setup a development environment

Fork the repository and then clone the forked repo

git clone <YOUR_FORKED_REPO>
cd snowpark-python

Install the library in edit mode and install its dependencies

  • Create a new Python virtual environment with any Python version that we support. Currently supported version is Python 3.8, Python 3.9, Python 3.10. Support for Python 3.11 is available as a preview feature to all accounts. For example,

    conda create --name snowpark-dev python=3.8

  • Activate the new Python virtual environment. For example,

    conda activate snowpark-dev

  • Go to the cloned repository root folder.

  • Install the Snowpark API in edit/development mode.

    python -m pip install -e ".[development, pandas]"

    The -e tells pip to install the library in edit, or development mode.

Setup your IDE

You can use PyCharm, VS Code, or any other IDE. The following steps assume you use PyCharm, VS Code or any other similar IDE.

Download and install PyCharm

Download the newest community version of PyCharm and follow the installation instructions.

Download and install VS Code

Downlaod and install the latest version of VS Code

Setup project

Open project and browse to the cloned git directory. Then right-click the directory src in PyCharm and "Mark Directory as" -> "Source Root". NOTE: VS Code doesn't have "Source Root" so you can skip this step if you use VS Code.

Setup Python Interpreter

Configure PyCharm interpreter or Configure VS Code interpreter to use the previously created Python virtual environment.

Tests

The README under tests folder tells you how to set up to run tests.

Why do my PR tests fail?

If this happens to you do not panic! Any PRs originating from a fork will fail some automated tests. This is because forks do not have access to our repository's secrets. A maintainer will manually review your changes then kick off the rest of our testing suite. Feel free to tag @snowflakedb/snowpark-python-api if you feel like we are taking too long to get to your PR.