Rawresponse attribute error

[jxnl]

fix: Prevent AttributeError for List[Model] batch extractions

Describe your changes

This PR resolves an AttributeError: 'list' object has no attribute 'rawresponse' that occurred during batch extractions when the response model was List[Object].

The issue stemmed from list[Model] being treated as a simple type, resulting in a plain list being returned, which lacks the _raw_response attribute expected by create_with_completion().

This fix re-implements the solution from the unmerged PR #1870:

• Introduces ListResponse, a list subclass that carries the _raw_response.
• Ensures that list[T] and Iterable[T] response models are correctly processed as IterableModels.
• Modifies process_response and process_response_async to wrap list-like outputs in ListResponse, preserving the _raw_response.

Issue ticket number and link

567-263
#1303

Checklist before requesting a review

• I have performed a self-review of my code
• If it is a core feature, I have added thorough tests.
• If it is a core feature, I have added documentation.

---

Linear Issue: 567-263

 

---

Important

Fixes AttributeError in batch extractions by introducing ListResponse to preserve _raw_response in list outputs and updates response processing functions accordingly.

• Behavior:
  • Fixes AttributeError in create_with_completion() for list[T] response models by introducing ListResponse to preserve _raw_response.
  • Updates process_response and process_response_async to wrap list outputs in ListResponse.
• Classes:
  • Adds ListResponse in response_list.py to handle list-like responses with _raw_response.
• Tests:
  • Adds test_list_response_wrapper.py to test ListResponse and ensure correct handling of iterable models.
• Misc:
  • Updates prepare_response_model in core.py to treat list[Model] as IterableModel.

^{This description was created by for 82f4d53. You can customize this summary. It will automatically update as commits are pushed.}

---

Note

Ensures list-based extractions retain the raw provider response and streaming behavior is consistent across iterable and partial models.

• Adds ListResponse (alias ResponseList) to carry _raw_response for list outputs; exported in dsl/__init__.py
• Updates process_response/process_response_async to:
  • Preserve streaming generators for IterableBase; stream PartialBase appropriately
  • Wrap IterableBase results in ListResponse with _raw_response
  • Attach _raw_response for ParallelBase; return .content for AdapterBase
  • Broaden return types to Any
• Improves prepare_response_model to treat list[Model]/Iterable[T] as IterableModel, keep scalar lists via ModelAdapter, avoid type-expression subscripting, and harden TypedDict -> BaseModel conversion
• Adds tests for list-response wrapping and iterable handling; updates CHANGELOG.md

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Status	Name	Latest Commit	Preview URL	Updated (UTC)
✅ Deployment successful! View logs	instructor	f64c381	Commit Preview URL Branch Preview URL	Jan 17 2026, 05:43 PM

[jxnl]

@cursoragent fix ci please

[cursor]

Taking a look!

 

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1. instructor/dsl/response_list.py:17

• Draft comment:
  ListResponse is implemented as a list subclass with an extra attribute. Consider documenting or overriding key mutating methods (e.g. iadd, add, pop) if preserving the _raw_response is important when the list is modified.
• Reason this comment was not posted:
  Confidence changes required: 80% <= threshold 85% None

2. instructor/processing/response.py:240

• Draft comment:
  In process_response_async, the raw response (an async generator) is stored in _raw_response. Ensure this behavior is documented so users know that the original async stream isn’t consumed elsewhere.
• Reason this comment was not posted:
  Confidence changes required: 70% <= threshold 85% None

3. instructor/processing/response.py:388

• Draft comment:
  Similar wrapping of IterableBase responses into a ListResponse is duplicated in this function. Consider extracting a helper to reduce duplication and adhere to DRY.
• Reason this comment was not posted:
  Confidence changes required: 60% <= threshold 85% None

4. instructor/utils/core.py:600

• Draft comment:
  In prepare_response_model, the check for list/Iterable types uses 'if origin is Iterable or origin is list:'. Consider using 'if origin in (Iterable, list):' for clarity and maintainability.
• Reason this comment was not posted:
  Confidence changes required: 60% <= threshold 85% None

5. tests/test_list_response_wrapper.py:92

• Draft comment:
  Tests for ListResponse are comprehensive. Consider adding tests to check that mutations (e.g. appending items) do not inadvertently affect the _raw_response attribute if such behavior is important.
• Reason this comment was not posted:
  Confidence changes required: 40% <= threshold 85% None

6. instructor/processing/response.py:265

• Draft comment:
  Typo found in the debug message: 'Returning takes from IterableBase' likely should be 'Returning tasks from IterableBase'.
• Reason this comment was not posted:
  Comment was on unchanged code.

7. instructor/processing/response.py:390

• Draft comment:
  Typo: The debug message reads "Returning takes from IterableBase". It seems like 'takes' should be corrected to 'tasks'.
• Reason this comment was not posted:
  Comment was on unchanged code.

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[jxnl]

@cursoragent fix ty and rugg and test and update changelog

[cursor]

CI is fixed now — the failures were from (1) streaming Iterable accidentally returning a ListResponse (breaking create_iterable()), and (2) list[int | str] getting treated like an IterableModel (breaking the fizzbuzz/simple-type path), plus some ty typing issues.

I pushed a follow-up that:

• keeps streaming Iterable as a generator/async generator (so create_iterable() works),
• only wraps non-streaming list/iterable outputs in ListResponse for _raw_response,
• treats list[T] as IterableModel only when T is BaseModel (or Union of BaseModels), so list[int | str] still works,
• fixes ty by avoiding ModelAdapter[variable] type-form issues.

Latest PR runs are green (ty + tests).

 

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1. instructor/processing/response.py:177

• Draft comment:
  The return type was changed to 'Any' to accommodate ListResponse wrapping. Consider updating the docstring to clarify that batch extractions for list response models now return a specialized ListResponse.
• Reason this comment was not posted:
  Decided after close inspection that this draft comment was likely wrong and/or not actionable: usefulness confidence = 20% vs. threshold = 85% The comment is about the return type change to Any and suggests updating the docstring. However, looking at the existing docstrings (lines 204-210 for async and lines 326-332 for sync), they already document the different return types including "If response_model is IterableBase with stream=True: returns list of models". The docstrings don't explicitly mention ListResponse by name, but they do describe when lists are returned. The comment seems to be asking for more specificity about ListResponse being the wrapper type. However, this is an implementation detail that may not need to be in the public-facing docstring. The return type change to Any is likely because the function can return many different types (ChatCompletion, ListResponse, model instances, etc.), and the docstring already describes these cases. The comment is somewhat speculative about what "should" be documented. The docstrings already document the various return types in detail. The comment is asking for a very specific implementation detail (mentioning ListResponse by name) to be added, but this might be overly specific for a docstring. The existing documentation already explains when lists are returned. This could be seen as a minor documentation enhancement rather than a necessary fix. While the docstrings do mention returning lists, they don't explicitly mention ListResponse which is a specific wrapper type that carries _raw_response. However, this level of detail might be too implementation-specific for the docstring. The comment is also not pointing to a clear error or omission - it's a suggestion for enhancement. Given the rule that comments should only be made when there's clearly a code change required, this seems more like a "nice to have" rather than a "must fix". The comment is suggesting a documentation enhancement rather than pointing out a clear error. The docstrings already document the return types for different scenarios. While mentioning ListResponse specifically could add clarity, it's not a required fix and the comment is somewhat speculative about what documentation is needed.

2. instructor/processing/response.py:292

• Draft comment:
  Similarly, the return type for process_response was updated to 'Any'. It would be helpful to update the docstring to inform consumers that list responses now come wrapped in a ListResponse.
• Reason this comment was not posted:
  Decided after close inspection that this draft comment was likely wrong and/or not actionable: usefulness confidence = 20% vs. threshold = 85% The comment is about documentation accuracy. The return type was changed to Any, which is less specific. The docstring currently says "If IterableBase: List of extracted model instances" but the actual implementation returns a ListResponse object (which is list-like but not a plain list). However, this is a suggestion to update documentation, not a code change. The rules state "Do NOT comment unless there is clearly a code change required" and "Do NOT make comments that are obvious or unimportant." Documentation suggestions are borderline - they're not code changes. Also, the docstring already mentions what happens with IterableBase, just not the specific type name. The comment is asking for more precision in the docstring, which is a minor documentation improvement rather than a critical issue. The comment is technically correct - the docstring could be more precise about the ListResponse type. However, this is a documentation suggestion rather than a code change requirement. The existing docstring does describe the behavior, just not with the exact type name. Is this important enough to warrant a comment? While documentation accuracy is valuable, the rules explicitly state not to comment unless there's a clear code change required. This is a documentation enhancement suggestion, not a bug or code issue. The docstring already describes the behavior adequately, even if it could be more precise about the specific wrapper type. This comment should be deleted. It's a documentation suggestion rather than a required code change. The docstring already describes the behavior for IterableBase responses, and asking for more precision about the ListResponse wrapper type is not critical enough to warrant a review comment.

3. instructor/utils/core.py:611

• Draft comment:
  The refactored TypedDict handling using getattr for 'name' and 'annotations' improves type-safety and clarity. This defensive coding is a neat improvement.
• Reason this comment was not posted:
  Comment did not seem useful. Confidence is useful = 0% <= threshold 85% This comment is purely informative and does not provide any actionable feedback or suggestions for improvement. It simply praises the changes made, which violates the rule against making purely informative comments.

4. tests/test_list_response_wrapper.py:47

• Draft comment:
  The tests now consistently use DummyCompletion to simulate provider responses, ensuring that the _raw_response attribute is preserved and that ListResponse is correctly wrapping the output.
• Reason this comment was not posted:
  Comment did not seem useful. Confidence is useful = 0% <= threshold 85% This comment is purely informative and does not provide any actionable feedback or suggestions for improvement. It simply states what has been done in the code without offering any critique or guidance.

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1. instructor/processing/response.py:232

• Draft comment:
  In the async streaming branch, the code now directly returns the generator from from_streaming_response_async without wrapping it in a ListResponse, so the _raw_response attribute is not preserved. Please confirm that this trade‑off is acceptable, given that non‑streaming cases do attach _raw_response.
• Reason this comment was not posted:
  Confidence changes required: 80% <= threshold 85% None

2. instructor/processing/response.py:379

• Draft comment:
  The sync non‑streaming branch correctly wraps IterableBase responses in a ListResponse to preserve the _raw_response attribute. It would be helpful to document the behavioral difference between streaming (raw response not preserved) and non‑streaming cases for clarity.
• Reason this comment was not posted:
  Confidence changes required: 50% <= threshold 85% None

3. instructor/utils/core.py:609

• Draft comment:
  The refactored prepare_response_model now distinguishes between Iterable and list types appropriately. Consider extracting the inner BaseModel check (lines 609–625) into a helper function for improved readability and to avoid code duplication.
• Reason this comment was not posted:
  Confidence changes required: 80% <= threshold 85% None

4. tests/test_list_response_wrapper.py:56

• Draft comment:
  The tests for non‑streaming and streaming IterableBase responses are comprehensive. It might be beneficial to add tests for simple type lists (e.g., list[int] or list[str]) to ensure they follow the simple type path rather than being wrapped as IterableModels.
• Reason this comment was not posted:
  Confidence changes required: 70% <= threshold 85% None

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1. CHANGELOG.md:11

• Draft comment:
  Consider ensuring consistent terminology for the response models across documentation. The PR description refers to 'List[Model]' (or Object) while the changelog uses 'list[BaseModel]'. Aligning these can reduce confusion.
• Reason this comment was not posted:
  Comment did not seem useful. Confidence is useful = 0% <= threshold 85% The comment suggests aligning terminology between the PR description and the changelog. However, it violates the rule against asking the PR author to update the PR description. The focus should be on the code changes, not the PR description or changelog.

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[jxnl]

@cursoragent merge main, resolve conflicts and fix any ci and update changelog

[cursor]

What I did

• Merged main into this PR branch, resolved conflicts in CHANGELOG.md, instructor/dsl/response_list.py, instructor/processing/response.py, and instructor/utils/core.py, and completed the merge commit (82f4d53).
• Kept the intended behavior intact: ListResponse preserves _raw_response for list[T] (Pydantic model) results, without breaking streaming create_iterable() behavior.

CI status

• All GitHub checks are green after the merge: Ruff, ty, and Test all succeeded on the latest PR run.

Changelog

• The Unreleased → Fixed entry for [GEMINI] create_with_completion does not work when the response_model is a List[Object] #1303 is retained and reconciled during conflict resolution.

 

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1. instructor/__init__.py:114

• Draft comment:
  Good use of a try/except block to conditionally import the optional vertexai client. This prevents import failures if the dependency is misconfigured.
• Reason this comment was not posted:
  Comment did not seem useful. Confidence is useful = 0% <= threshold 85% This comment is purely informative and does not provide any actionable feedback or suggestions for improvement. It simply praises the use of a try/except block without offering any constructive criticism or guidance.

2. tests/test_list_response.py:19

• Draft comment:
  The tests effectively verify that the ListResponse subclass correctly preserves the raw response and handles slicing, as well as wrapping IterableBase tasks. Good coverage!
• Reason this comment was not posted:
  Comment did not seem useful. Confidence is useful = 0% <= threshold 85% This comment is purely informative and does not provide any actionable feedback or suggestions for improvement. It simply states that the tests are effective, which is not necessary for the PR author to know.

3. instructor/processing/response.py:260

• Draft comment:
  Typographical error: The log message says "Returning takes from IterableBase" which is likely a typo. Consider replacing "takes" with "tasks".
• Reason this comment was not posted:
  Comment was on unchanged code.

4. instructor/processing/response.py:378

• Draft comment:
  Typographical error: The debug message says "Returning takes from IterableBase", which likely should be "Returning tasks from IterableBase" to match the context (since it's processing model.tasks).
• Reason this comment was not posted:
  Comment was on unchanged code.

5. tests/test_list_response.py:43

• Draft comment:
  Typo alert: In the comment on line 43, "to keep ty happy." might be a typo. Consider changing it to "to keep type checking happy."
• Reason this comment was not posted:
  Decided after close inspection that this draft comment was likely wrong and/or not actionable: usefulness confidence = 15% vs. threshold = 85% This comment is about a typo/wording issue in a code comment, not about actual code logic. The rules state "Do NOT comment unless there is clearly a code change required" and "Do NOT make comments that are obvious or unimportant." While the suggestion might make the comment slightly clearer, this is a very minor stylistic issue in a comment (not code). The current wording "to keep ty happy" is understandable in context - it's informal but clear enough. This doesn't require a code change, it's just a suggestion to reword a comment for clarity. This falls under "obvious or unimportant" - it's not affecting functionality or correctness of the code itself. The comment could be seen as improving code clarity and documentation quality. "ty" might be confusing to some readers, and making comments more explicit could be valuable for maintainability. This is a test file, so clarity in explaining why certain patterns are used could be helpful. While clarity is good, the rules explicitly state not to comment unless there's clearly a code change required. This is about wording in a comment, not actual code. The current phrasing is understandable enough in context (especially for developers familiar with type checking). This is too minor and doesn't meet the bar for requiring action. This comment should be deleted. It's about minor wording in a code comment, not actual code logic or functionality. It doesn't meet the threshold of requiring a clear code change, and falls under "obvious or unimportant" suggestions.

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[jxnl]

@cursoragent merge main, resolve issues, and fix ruff/ci

[cursor]

• Merged main and resolved conflicts earlier; branch is now up to date.
• Fixed the Ruff/CI failures:
  • Removed the duplicate ListResponse import in instructor/dsl/__init__.py (ed33c17).
  • Ran ruff format on the two files CI flagged (instructor/dsl/response_list.py, instructor/utils/core.py) and pushed (9da035b).
• Ruff CI is green again on the latest push (cache restore warnings are unrelated; the lint/format steps now pass).

 

[jxnl]

@cursoragent review

[cursor]

I reviewed the PR end-to-end after merging main and fixing the follow-up issues.

• Core fix looks solid: list[T] (where T is a Pydantic model) no longer returns a plain list, so create_with_completion() can safely return (result, result._raw_response) without crashing.
• No streaming regression: create_iterable() keeps returning a generator/async-generator (we avoided wrapping streaming outputs in ListResponse).
• Type + lint: ty and ruff are clean; I also removed the duplicate ListResponse import and applied the final ruff format fixes.
• CI: latest GitHub checks are green on the branch; changelog entry for [GEMINI] create_with_completion does not work when the response_model is a List[Object] #1303 is included under Unreleased → Fixed.

This should be ready to merge.