[OPIK-937] [P SDK] Opik Evaluate crash when task is wrapped in functools.partial

[yaricom]

Details

Problem: The error handling code in the decorator was trying to access func.__name__ directly, but functools.partial objects don't have this attribute, causing AttributeError: functools.partial object has no attribute __name__.

Solution:

1. Created a safe helper function: Added get_function_name() in src/opik/decorator/inspect_helpers.py:50-57 that safely handles functools.partial objects by
   accessing the underlying function's __name__ attribute.
2. Fixed all usages: Updated 9 instances in src/opik/decorator/base_track_decorator.py and 1 instance in src/opik/decorator/tracker.py to use the safe helper instead
   of direct func.__name__ access.
3. Added comprehensive tests: created unit tests for the helper function and an integration test that verifies partial functions work correctly with the tracker and their names are processed properly.

Key improvements:

• The fix handles not just functools.partial objects but any callable without a __name__ attribute
• Falls back to <unknown> for objects without names
• All existing tests continue to pass
• The integration test confirms the fix resolves the original crash scenario

The user's opik.evaluate() calls with functools.partial functions will now work correctly without crashing.

Change checklist

• User facing

Issues

• OPIK-937

Testing

Added comprehensive tests.

Documentation

Added doctoring where required.

[Copilot]

Pull Request Overview

This PR fixes a crash in Opik Evaluate when functions are wrapped in functools.partial by addressing the issue where the decorator code tried to access func.__name__ directly on partial objects that don't have this attribute.

• Introduced a safe helper function to extract function names from both regular functions and functools.partial objects
• Replaced all unsafe direct func.__name__ accesses with the safe helper function
• Added comprehensive test coverage for the new functionality

Reviewed Changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
sdks/python/src/opik/decorator/inspect_helpers.py	Added get_function_name() helper function to safely extract names from functions and partial objects
sdks/python/src/opik/decorator/base_track_decorator.py	Updated 9 instances to use safe helper instead of direct func.__name__ access
sdks/python/src/opik/decorator/tracker.py	Updated 1 instance to use safe helper for function name extraction
sdks/python/tests/unit/decorator/test_inspect_helpers.py	Added comprehensive unit tests for the new helper function
sdks/python/tests/unit/decorator/test_tracker_outputs.py	Added integration test verifying partial functions work correctly with tracker
sdks/python/CLAUDE.md	Added documentation file for Claude Code integration

[Copilot]

This documentation file appears unrelated to the PR's core purpose of fixing functools.partial compatibility. Consider moving this to a separate PR focused on documentation improvements.

[yaricom]

Irrelevant comment.