fix: annotation compatibility with python 3.9

[yyuuttaaoo]

Change-Id: I73c387651d49aadf40fecd8a1971e6e3236f1241
Co-developed-by: Cursor [email protected]

Description

Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context. List any dependencies that are required for this change.

Fixes # (issue)

Type of change

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• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration

• Test A

Does This PR Require a Core Repo Change?

• Yes. - Link to PR:
• No.

Checklist:

See contributing.md for styleguide, changelog guidelines, and more.

• Followed the style guidelines of this project
• Changelogs have been updated
• Unit tests have been added
• Documentation has been updated

[ralf0131]

There is a type check failure to be fixed.

[Copilot]

Pull request overview

This pull request adds Python 3.9 compatibility by importing from __future__ import annotations in files that use the modern union type syntax (X | Y). This is necessary because Python 3.9 does not natively support the X | Y syntax for type unions without this future import - it was only introduced natively in Python 3.10. The import enables deferred evaluation of annotations, allowing the use of the modern syntax while maintaining backward compatibility.

• Adds from __future__ import annotations to 9 Python files across multiple instrumentation packages
• Updates the CHANGELOG with the fix description
• Ensures consistency in import placement (first import after copyright header, before other imports)

Reviewed changes

Copilot reviewed 10 out of 11 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
scripts/generate_instrumentation_readme.py	Adds future annotations import for Python 3.9 compatibility
instrumentation-loongsuite/loongsuite-instrumentation-mem0/tests/conftest.py	Adds future annotations import for Python 3.9 compatibility
instrumentation-loongsuite/loongsuite-instrumentation-mem0/src/opentelemetry/instrumentation/mem0/config.py	Adds future annotations import for Python 3.9 compatibility
instrumentation-loongsuite/loongsuite-instrumentation-mcp/tests/test_websocket.py	Adds future annotations import for Python 3.9 compatibility
instrumentation-loongsuite/loongsuite-instrumentation-mcp/tests/mcp_server.py	Adds future annotations import for Python 3.9 compatibility
instrumentation-loongsuite/loongsuite-instrumentation-langchain/tests/instrumentation/langchain/test_langchain_instrumentor.py	Adds future annotations import for Python 3.9 compatibility
instrumentation-loongsuite/loongsuite-instrumentation-langchain/src/opentelemetry/instrumentation/langchain/internal/_utils.py	Adds future annotations import for Python 3.9 compatibility
instrumentation-loongsuite/loongsuite-instrumentation-dify/src/opentelemetry/instrumentation/dify/capture_content.py	Adds future annotations import for Python 3.9 compatibility
instrumentation-genai/opentelemetry-instrumentation-google-genai/src/opentelemetry/instrumentation/google_genai/generate_content.py	Adds future annotations import for Python 3.9 compatibility
CHANGELOG-loongsuite.md	Documents the Python 3.9 compatibility fix (contains typo in PR title)

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[Copilot]

Typo in PR title: "compatiblitiy" should be "compatibility"

[yyuuttaaoo]

@copilot open a new pull request to apply changes based on this feedback

[yyuuttaaoo]

There is a type check failure to be fixed.

It was introduce by the previous commits and is a problem from upstream. We can ignore the issue in this PR.