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GeezerVison is showing github.com — gh-161840: Propagate __len__() exceptions in ctypes array slice assignment by yhay81 · Pull Request #161859 · python/cpython

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@yhay81

@yhay81 yhay81 commented Nov 12, 2026

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In Array_ass_subscript_impl(), check whether PySequence_Length(value) returned -1 before comparing otherlen != slicelen, so exceptions raised by value.__len__() (or TypeError for unsized objects) propagate instead of being overwritten with ValueError("Can only assign sequence of same size").

  • Issue: ctypes: array slice assignment replaces the value's __len__ exception with a ValueError #161840

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@yhay81
pythongh-161840: Propagate __len__() exceptions in ctypes array slice…
2343277 
… assignment
@bedevere-app bedevere-app Bot mentioned this pull request Nov 12, 2026
ctypes: array slice assignment replaces the value's __len__ exception with a ValueError #161840
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@bedevere-app bedevere-app Bot added the awaiting review label Nov 12, 2026
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@yhay81
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