BUG: Allow pickling all relevant DType types/classes#18345
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charris merged 1 commit intonumpy:maintenance/1.20.xfrom Feb 6, 2021
Merged
BUG: Allow pickling all relevant DType types/classes#18345charris merged 1 commit intonumpy:maintenance/1.20.xfrom
charris merged 1 commit intonumpy:maintenance/1.20.xfrom
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Introducing the metaclass without a canonical top-level name broke pickling of `type(np.dtype(...))` (which was always just `np.dtype`). While a better solution will likely be possible by making the DTypes HeapTypes and this solution may not work for all imaginable cases (i.e. it is plausible for a dtype to not have a scalar type associated), using a `copyreg` registration for the metaclass surprisingly works without any issues and seems like the simplest solution right now. Closes numpygh-16692, numpygh-18325
This was referenced Mar 8, 2021
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Backport of #18332.
Introducing the metaclass without a canonical top-level name broke
pickling of
type(np.dtype(...))(which was always justnp.dtype).While a better solution will likely be possible by making the
DTypes HeapTypes and this solution may not work for all imaginable
cases (i.e. it is plausible for a dtype to not have a scalar type
associated), using a
copyregregistration for the metaclasssurprisingly works without any issues and seems like the simplest
solution right now.
Closes gh-16692, gh-18325