[Feature Request] expose Delta version programmatically

[gokulyc]

Feature request

Overview

Add delta lake library version to python api.

I am unable find installed delta library version programmatically, when using python package.

let me know if feature already exists, i didn't find it.

Willingness to contribute

The Delta Lake Community encourages new feature contributions. Would you or another member of your organization be willing to contribute an implementation of this feature?

• [ ] Yes. I can contribute this feature independently.
• [x] Yes. I would be willing to contribute this feature with guidance from the Delta Lake community.
• [ ] No. I cannot contribute this feature at this time.

[tdas]

There isnt one. But why do you need to know this version? Dont you already know what version you have installed with spark?

[gokulyc]

i am using delta lake package comes with databricks in Azure. where can i find exact version?

[gokulyc]

I found delta lake version in databricks runtime docs.

Ex: https://docs.databricks.com/release-notes/runtime/11.1.html

[nkarpov]

FWIW there is a public SparkSession.version field (exposed in pyspark too)

[nkarpov]

Hi @gokulyc could you share a little more about your use case? Specifically, what is the pattern you're trying to implement that requires you to programmatically get the Delta version? Thanks!

[gokulyc]

@nkarpov I observed that python libraries like sklearn, pandas & numpy (Most Libraries) have library version value as __version__ attribute. Value is usually in version.py file.

for example optimize() was introduced in 2.0 in delta-lake library, one can use the value to write logic without exception handling. It will increase developer experience.

please add the minor feature.

[gokulyc]

It is already present in setup.py, it needs to added to __version__.py or __init__.py

https://github.com/delta-io/delta/blob/edaeb86304211513c8028d056a7d90e98ec2839c/setup.py#L17

[nkarpov]

Thanks @gokulyc, are you open to submitting a PR for this?