[opentelemetry-instrumentation-genai-dspy] Support copy and deepcopy on wrapped DSPy methods

[DylanRussell]

Implements copy and deepcopy support on wrapped DSPy functions and bound methods.

DSPy optimizers and teleprompters (such as dspy.compile, BootstrapFewShot, and MIPRO) rely heavily on copy.copy and copy.deepcopy to clone module trees and bound method callables during prompt optimization. Without custom wrapper copy handlers, copying wrapped DSPy callables raises NotImplementedError: object proxy must define __deepcopy__().

Type of change

• Bug fix (non-breaking change which fixes an issue)

Checklist

• Followed the style guidelines of this project
• Changelog updated if the change requires an entry
• Unit tests added
• Documentation updated

[Copilot]

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Pull request overview

Adds copy.copy / copy.deepcopy support for DSPy callables after they’ve been wrapped for OpenTelemetry tracing, to keep DSPy compilation/optimizers working without ObjectProxy deepcopy errors.

Changes:

• Introduces custom copy/deepcopy-capable wrapt wrappers and switches patching to use them.
• Adds unit tests covering copying/deepcopying wrapped Tool callables and ReAct methods (including async when available).
• Adds a changelog entry documenting the new compatibility behavior.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 3 comments.

File	Description
instrumentation/opentelemetry-instrumentation-genai-dspy/tests/test_instrumentor.py	Adds regression tests asserting wrapped DSPy callables can be copied/deepcopied (sync + async).
instrumentation/opentelemetry-instrumentation-genai-dspy/src/opentelemetry/instrumentation/genai/dspy/patch.py	Implements copyable/deepcopyable wrapper classes and replaces wrapping mechanism.
instrumentation/opentelemetry-instrumentation-genai-dspy/.changelog/591.added	Documents the added copy/deepcopy compatibility.

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Waiting on reviewers · refreshed 2026-09-04 14:32 UTC

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