[Python][Client] Add LICENSE and NOTICE to CLI.

[HonahX]

Add LICENSE and NOTICE file for python client. Python Client is supposed to distribute sdist and wheel. In sdist, we have the following files that are copied from other repo and thus included in the LICENSE

• spec/iceberg-rest-catalog-open-api.yaml
• spec/polaris-catalog-apis/oauth-tokens-api.yaml

Checklist

• 🛡️ Don't disclose security issues! (contact security@apache.org)
• 🔗 Clearly explained why the changes are needed, or linked related issues: Fixes #
• 🧪 Added/updated tests with good coverage, or manually tested (and explained how)
• 💡 Added comments for complex logic
• 🧾 Updated CHANGELOG.md (if needed)
• 📚 Updated documentation in site/content/in-dev/unreleased (if needed)

[flyrain]

Do we need to include the following dependencies? cc @jbonofre

dependencies = [
    "urllib3>=1.25.3,<3.0.0",
    "python-dateutil>=2.8.2",
    "pydantic>=2.12.5,<2.13.0",
    "typing-extensions>=4.7.1",
    "boto3~=1.42.2",
]

[jbonofre]

The LICENSE here should document what is in the product/artifact.

Considering the Python Client whl:

1. the dist info METADATA described the dependencies resolved at execution:

Requires-Dist: boto3 (>=1.40.6,<1.41.0)
Requires-Dist: pydantic (>=2.0.0,<2.12.0)
Requires-Dist: python-dateutil (>=2.8.2)
Requires-Dist: typing-extensions (>=4.7.1)
Requires-Dist: urllib3 (>=1.25.3,<3.0.0)

2. There's not code coming from anywhere (even Iceberg).
3. The spec OpenAPI yaml are not included at all in the distributed artifact. It's used to generate the stubs.

So, actually, the LICENSE should not contain anything because the distributed artifact (product) doesn't bundle anything.

[flyrain]

Great. I like how pypi distributes it.

[HonahX]

Thanks for reviewing! One follow-up question to confirm, the spec files are not included in the wheel but they do exist in the sdist, since for user install via sdist they will need to re-generate the client using the included spec

tar tzf client/python/dist/apache_polaris-1.4.0.tar.gz | grep "^apache_polaris-1.4.0/spec/"
apache_polaris-1.4.0/spec/README.md
apache_polaris-1.4.0/spec/iceberg-rest-catalog-open-api.yaml
apache_polaris-1.4.0/spec/polaris-catalog-service.yaml
apache_polaris-1.4.0/spec/polaris-management-service.yml
apache_polaris-1.4.0/spec/generated/bundled-polaris-catalog-service.yaml
apache_polaris-1.4.0/spec/polaris-catalog-apis/generic-tables-api.yaml
apache_polaris-1.4.0/spec/polaris-catalog-apis/notifications-api.yaml
apache_polaris-1.4.0/spec/polaris-catalog-apis/oauth-tokens-api.yaml
apache_polaris-1.4.0/spec/polaris-catalog-apis/policy-apis.yaml

Do we need to include spec files in the LICENSE in this case?

We could also only publish wheel since the wheel is universal

[flyrain]

I thought you did that already in line 207 and 208

[jbonofre]

I checked in the wheel distribution.

So, if we plan to publish both wheel and a tar.gz distributions, yes, spec should be documented in LICENSE. Maybe easier to have the same layout between wheel and tar.gz distributions.

If we don't actually need the spec in the tar.gz distribution, I would propose to not include spec here.

I think we have three options:

1. Don't include spec in tar.gz distribution
2. Include spec in wheel distribution
3. Only publish wheel distribution (not sure tar.gz distribution is very used)

[HonahX]

Thanks for the suggestions! Spec are required in tar.gz distribution since pip install from source need to generate open api client from them.

Since we have universal wheel here that should cover all most of the cases, for simplicity let's target at option 3: only publish wheel distribution first. We could add sdist later if really needed.

cc: @MonkeyCanCode

[jbonofre]

LICENSE should not contain Iceberg because the distribution/product doesn't include (bundle) any code from Iceberg.
The copyright year in the NOTICE should be updated to 2026.

[jbonofre]

The LICENSE here should document what is in the product/artifact.

Considering the Python Client whl:

1. the dist info METADATA described the dependencies resolved at execution:

Requires-Dist: boto3 (>=1.40.6,<1.41.0)
Requires-Dist: pydantic (>=2.0.0,<2.12.0)
Requires-Dist: python-dateutil (>=2.8.2)
Requires-Dist: typing-extensions (>=4.7.1)
Requires-Dist: urllib3 (>=1.25.3,<3.0.0)

2. There's not code coming from anywhere (even Iceberg).
3. The spec OpenAPI yaml are not included at all in the distributed artifact. It's used to generate the stubs.

So, actually, the LICENSE should not contain anything because the distributed artifact (product) doesn't bundle anything.

[MonkeyCanCode]

Thanks for working on this @HonahX . Looks good to me. Once comments are addressed, I will approve.