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enable extending native types on abi3 for 3.12+#5733

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Icxolu merged 1 commit intoPyO3:mainfrom
Icxolu:inherit-abi3
Jan 14, 2026
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enable extending native types on abi3 for 3.12+#5733
Icxolu merged 1 commit intoPyO3:mainfrom
Icxolu:inherit-abi3

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@Icxolu Icxolu commented Jan 13, 2026 •
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This uses the infrastructure from #5728 to enable subclassing native types on abi3 for 3.12+.

Closes #1344

@Icxolu Icxolu changed the title enable extending native types on abi3 enable extending native types on abi3 for 3.12+ Jan 13, 2026
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Tpt commented Jan 14, 2026 •
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Thank you so much for this!

Closes #1344

Nit: I am not sure this is fully true. Supporting 3.10+ is likely required to get rid of things like create_exception!

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MatthieuDartiailh commented Jan 14, 2026

Out of curiosity will this enable support for subclassing PyList or will extra work be required for this ?

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Icxolu commented Jan 14, 2026

Out of curiosity will this enable support for subclassing PyList or will extra work be required for this ?

Not with this one, but I do have a followup ready which does add support for that after this one.

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davidhewitt approved these changes Jan 14, 2026
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Very nice, just some tiny nits for comments to add, update. Thanks!

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Icxolu commented Jan 14, 2026

Nit: I am not sure this is fully true. Supporting 3.10+ is likely required to get rid of things like create_exception!

It's true that this is not unconditionally, but I think it's still a significant step forward and we can track additional extensions in a new issue.

@Icxolu Icxolu enabled auto-merge January 14, 2026 17:39
@Icxolu Icxolu added this pull request to the merge queue Jan 14, 2026
Merged via the queue into PyO3:main with commit b3fb6aa Jan 14, 2026
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@Icxolu Icxolu deleted the inherit-abi3 branch January 14, 2026 19:17
@davidhewitt davidhewitt mentioned this pull request Feb 12, 2026
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Support subclassing from native types in abi3

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@Icxolu @Tpt @MatthieuDartiailh @davidhewitt