PyType_From*: Disallow metaclasses with custom tp_new #123909
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URL: https://github.com/python/cpython/issues/123909
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Following up after #60074 and #103968:
In 3.14, the deprecation period is over and
PyType_From*should fail if the metaclass has customtp_new. That means thetp_newis no longer silently skipped.The proper way to instantiate such a metaclass is to call it.
Linked PRs