[CPyCppyy] Drop __array__ from std::vector pythonizations
#18208
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Test Results 17 files 17 suites 4d 3h 24m 56s ⏱️ For more details on these failures, see this check. Results for commit 55e8ca6. ♻️ This comment has been updated with latest results. |
guitargeek
reviewed
Apr 1, 2025
The addition of the __array__ utility to std::vector Python proxies causes a bug where the resulting array is a single dimension, causing loss of data when converting to numpy arrays, for >1dim vectors. The recursive nature of this function, passes each subarray (pydata) to the next call and only the final buffer is cast to a lowlevel view and resized (in VectorData), resulting in only the first 1D array to be returned. See root-project#17729 Since this C++ pythonization was added with the upgrade in 6.32, and is only defined and used recursively, the safe option is to disable this function and no longer add it. It is temporarily removed to prevent errors due to -Wunused-function
aaronj0
changed the title
__array__ from std::vector pythonizations in CPyCppyy__array__ from std::vector pythonizations
1 task
guitargeek
approved these changes
Apr 2, 2025
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The addition of the
__array__utility to std::vector Python proxies causes a bug where the resulting array is a single dimension, causing loss of data when converting to numpy arrays, for >1dim vectors. The recursive nature of thisfunction
VectorArray, passes each subarray (pydata) to the next call and only the final buffer is cast to a lowlevel view and resized (in VectorData), resulting in only the first 1D array to be returned.Since this C++ pythonization was added with the upgrade in 6.32, and is only defined and used recursively, the safe option is to disable this function and no longer add it. It is temporarily removed to prevent errors due to
-Wunused-functionFixes: #17729