Disclaimer: Snowflake employee here. You can add any Python library you want - as long as its dependencies are also 100% Python. Takes about a minute: pip install the package, zip it up, upload it to an internal Snowflake stage, then reference it in the IMPORTS=() directive in your Python. I did this with pydicom just the other day - worked a treat. So yes, not the depth and breadth of the entire Python ecosystem, but 1500+ native packages/versions on the Anaconda repo, plus this technique? Hardly a "walled garden".