fix(python_api): correct hasattr call for __array_interface__ check#14459
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fix(python_api): correct hasattr call for __array_interface__ check#14459Hrk84ya wants to merge 3 commits into
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…ng "obj" Closes #14456 The second hasattr call in _as_numpy_array incorrectly passed the string literal "obj" instead of the variable obj when checking for __array_interface__. This caused objects implementing only __array_interface__ (without __array__) to not be recognized as numpy-like arrays by pytest.approx. Co-authored-by: Kiro (AI) <noreply@kiro.dev>
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Pull request overview
Fixes a bug in pytest’s approx NumPy-detection logic where _as_numpy_array accidentally checked __array_interface__ on the string literal "obj" instead of the actual object, preventing some array-like objects from being treated as NumPy-like.
Changes:
- Corrected the
hasattrcall to check__array_interface__onobj. - Added a towncrier bugfix fragment documenting the user-visible impact.
- Added the contributor to
AUTHORS.
Reviewed changes
Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.
| File | Description |
|---|---|
src/_pytest/python_api.py |
Fixes _as_numpy_array detection so pytest.approx recognizes objects implementing __array_interface__. |
changelog/14456.bugfix.rst |
Adds a user-facing changelog entry for the bugfix. |
AUTHORS |
Adds the contributor name. |
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| elif hasattr(obj, "__array__") or hasattr(obj, "__array_interface__"): | ||
| return np.asarray(obj) |
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Closes #14456
The second hasattr call in _as_numpy_array incorrectly passed the string literal "obj" instead of the variable obj when checking for array_interface. This caused objects implementing only array_interface (without array) to not be recognized as numpy-like arrays by pytest.approx.
Fix typo in hasattr call: change hasattr("obj", ...) to hasattr(obj, ...)
Ensures array_interface attribute is checked on the actual object instead of the string literal "obj"
Prevents incorrect behavior when converting objects to numpy arrays