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cedff2d617
Avoid locking in the PyType_Lookup cache-miss path if the type's tp_version_tag is already valid. (cherry picked from commit cd5217283112d41c0244e2d96302cbe33f0b4cb1) Co-authored-by: Sam Gross <colesbury@gmail.com>
The Python C API ================ The C API is divided into these sections: 1. ``Include/``: Limited API 2. ``Include/cpython/``: CPython implementation details 3. ``Include/cpython/``, names with the ``PyUnstable_`` prefix: API that can change between minor releases 4. ``Include/internal/``, and any name with ``_`` prefix: The internal API Information on changing the C API is available `in the developer guide`_ .. _in the developer guide: https://devguide.python.org/c-api/