[MCC-1489710] Python Lib - Boilerplate Code [Dev Only]

[butsyk-mdsol]

feature/bug/enhance/refactor/tech_debt/hotfix

• Python Lib - Boilerplate Code.
• MCC-1489710

Checklist

• Review the pull request to fix typos and ensure variable/function names are intuitive, etc.
• Make sure the pull request does not have excessive number of unnecessary commits. Utilize the git commit --amend --no-edit command to reduce commit messages when making small file changes (like changing linespacing).
• Make sure you have added unit tests for the code changes. Tests should be added in the tests/ folder.
• Modify docs, if required. Add any new documentation in the doc/ folder.
• Rebase on latest active development branch (develop/main).

Changes Summary

• Create foundation for all developers in Team 348 to contribute to this repository, and create a code library similar to R-Lib. 
• Code structure should be strict, variables should all have types defined etc.
• Dependencies (such as pyarrow) should be defined in the toml file. 
• Clean up or hide any excessive files generated by the Python Template during repo creation. 

 

Deployment Notes

In addition to IAC/code, add any notes for reviewer should know.

[Copilot]

Pull request overview

Introduces an initial Python SDK (dataconnect) for the Medidata DataConnect service (Arrow Flight / gRPC), replacing/augmenting the prior template scaffolding and adding offline unit tests plus updated packaging/docs.

Changes:

• Added the dataconnect package (client, connection helpers, datasets APIs, publishing APIs, models, error hierarchy, and a lazy data frame abstraction).
• Switched packaging/config to a PEP 621 + Hatch setup and added Ruff + strict mypy configuration.
• Added a comprehensive tests/test_dataconnect.py suite and updated template tests with more type annotations.

Reviewed changes

Copilot reviewed 19 out of 21 changed files in this pull request and generated 21 comments.

Show a summary per file

File	Description
dataconnect/__init__.py	Exposes the public SDK surface (client, models, errors, init() factory).
dataconnect/_client.py	Implements DataConnectClient public methods (studies/datasets/versions/fetch/publish).
dataconnect/_connection.py	Builds FlightClient + per-call metadata headers (incl. network-identification).
dataconnect/_datasets.py	Implements list APIs over list_flights and parses tickets/app_metadata.
dataconnect/_errors.py	Adds SDK exception hierarchy and Flight error parsing helpers.
dataconnect/_frame.py	Adds DataConnectFrame lazy head()/collect() abstraction over do_get.
dataconnect/_models.py	Adds pydantic v2 models for typed responses.
dataconnect/_publishing.py	Implements publish/dry-publish over do_put plus local row counting.
pyproject.toml	Moves to Hatch/PEP621 and defines runtime/dev deps + Ruff/mypy/pytest config.
pyproject_orig.toml	Keeps the prior Poetry-based template config for reference.
README.md	Replaces template README with DataConnect SDK docs and examples.
README_orig.md	Keeps the prior template README for reference.
TODO	Documents intended package layout and design decisions.
tests/test_dataconnect.py	Adds offline unit tests using mocked FlightClient.
tests/conftest.py	Updates fixtures typing and imports for the template tests.
tests/test_reversers.py	Adds type annotations to template tests.
tests/test_python_template.py	Adds a return type annotation to the import test.
tests/test_benchmark_reverser.py	Adds type annotation to word argument in benchmark test.
python_template/reverse.py	Modernizes typing imports and return type annotations.

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