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fix: handle bare dict annotation in _transform_recursive #3348

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fix: handle bare dict annotation in _transform_recursive #3348

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10 changes: 8 additions & 2 deletions src/openai/_utils/_transform.py
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Original file line number Diff line number Diff line change
Expand Up @@ -180,7 +180,10 @@ def _transform_recursive(
return _transform_typeddict(data, stripped_type)

if origin == dict and is_mapping(data):
items_type = get_args(stripped_type)[1]
args = get_args(stripped_type)
if len(args) < 2:
return cast(object, data)
items_type = args[1]
return {key: _transform_recursive(value, annotation=items_type) for key, value in data.items()}

if (
Expand Down Expand Up @@ -346,7 +349,10 @@ async def _async_transform_recursive(
return await _async_transform_typeddict(data, stripped_type)

if origin == dict and is_mapping(data):
items_type = get_args(stripped_type)[1]
args = get_args(stripped_type)
if len(args) < 2:
return cast(object, data)
items_type = args[1]
return {key: _transform_recursive(value, annotation=items_type) for key, value in data.items()}

if (
Expand Down
16 changes: 16 additions & 0 deletions tests/test_transform.py
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Original file line number Diff line number Diff line change
Expand Up @@ -397,6 +397,22 @@ class DictItems(TypedDict):
assert await transform({"foo": {"foo_baz": "bar"}}, Dict[str, DictItems], use_async) == {"foo": {"fooBaz": "bar"}}



class BareDictTypedDict(TypedDict, total=False):
metadata: dict # bare dict — no type parameters


@parametrize
@pytest.mark.asyncio
async def test_bare_dict_in_typeddict(use_async: bool) -> None:
"""transform should not crash on bare dict annotations in TypedDict."""
result = await transform({"metadata": {"key": "value"}}, BareDictTypedDict, use_async)
assert result == {"metadata": {"key": "value"}}

result = await transform({"metadata": {}}, BareDictTypedDict, use_async)
assert result == {"metadata": {}}


class TypedDictIterableUnionStr(TypedDict):
foo: Annotated[Union[str, Iterable[Baz8]], PropertyInfo(alias="FOO")]

Expand Down