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Fix: Exclude computed fields during pydantic MP serialization #845

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mergify merged 1 commit into from
Jun 24, 2026
+4 −3
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Fix: Exclude computed fields during pydantic MP serialization #845

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6 changes: 4 additions & 2 deletions src/guidellm/utils/encoding.py
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Original file line number Diff line number Diff line change
Expand Up @@ -431,7 +431,7 @@ def to_dict_pydantic(self, item: Any) -> Any:
"*PYD*": True,
"typ": item.__class__.__name__,
"mod": item.__class__.__module__,
"dat": item.model_dump(mode="python"),
"dat": item.model_dump(mode="python", exclude_computed_fields=True),
}

def from_dict_pydantic(self, item: dict[str, Any]) -> Any:
Expand Down Expand Up @@ -572,7 +572,9 @@ def to_sequence_pydantic(self, obj: BaseModel) -> str | bytes:
"""
class_name: str = obj.__class__.__name__
class_module: str = obj.__class__.__module__
json_data = obj.__pydantic_serializer__.to_json(obj)
json_data = obj.__pydantic_serializer__.to_json(
obj, exclude_computed_fields=True
)

return class_name.encode() + b"|" + class_module.encode() + b"|" + json_data

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1 change: 0 additions & 1 deletion tests/unit/utils/test_encoding.py
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Expand Up @@ -201,7 +201,6 @@ def test_encode_decode_pydantic(self, valid_instances, obj: Any):
else:
assert decoded == obj

@pytest.mark.xfail(reason="old and broken", run=False)
@pytest.mark.smoke
@pytest.mark.parametrize(
"obj",
Expand Down