8000 BUG: `np.dtype("a")` NumPy 2 deprecation seems not properly tested and raising fails. · Issue #26521 · numpy/numpy · GitHub
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BUG: np.dtype("a") NumPy 2 deprecation seems not properly tested and raising fails. #26521

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seberg opened this issue May 24, 2024 · 0 comments · Fixed by #26524
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BUG: np.dtype("a") NumPy 2 deprecation seems not properly tested and raising fails. #26521

seberg opened this issue May 24, 2024 · 0 comments · Fixed by #26524
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2.0.0 release

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@seberg
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seberg commented May 24, 2024

The following should either raise the DeprecationWarning properly, or life in the future and raise a TypeError, but it doesn't raise anything:

In [4]: warnings.simplefilter("error")
In [5]: np.dtype("a")
---------------------------------------------------------------------------
DeprecationWarning                        Traceback (most recent call last)
DeprecationWarning: Data type alias `a` was removed in NumPy 2.0. Use `S` alias instead.

The above exception was the direct cause of the following exception:

SystemError                               Traceback (most recent call last)
Cell In[5], line 1
----> 1 np.dtype("a")

SystemError: <class 'numpy.dtype'> returned a result with an exception set

Probably there is no test for it in test_deprecations.py (since those tests automatically try to cover the failure path).
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BUG: fix incorrect error handling for dtype('a') deprecation ngoldbaum/numpy
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