pythoncapi-compat users

Examples of projects using pythoncapi_compat.h

• bitarray: bitarray/_bitarray.c uses Py_SET_SIZE() (pythoncapi_compat.h copy)

• datatable (commit)

• guppy3 (commit)

• immutables: immutables/_map.c uses Py_SET_SIZE() (pythoncapi_compat.h copy)

• Mercurial (hg) uses Py_SET_TYPE() (commit, pythoncapi_compat.h copy)

• mypy (mypyc, commit)

• numpy: pythoncapi-compat Git submodule

• pybluez (commit)

• python-snappy (commit)

• python-zstandard uses Py_SET_TYPE() and Py_SET_SIZE() (commit): Mercurial extension.

• python-zstd (commit)

• hollerith src/writer.c uses PyObject_CallOneArg() and other Python 3.9 apis (pythoncapi_compat.h copy)

• PyTorch (pythoncapi_compat.h copy)

• PyGObject (commit, pythoncapi-compat Meson subproject)

• Pillow (src/thirdparty/pythoncapi_compat.h)

• watchdog (src/pythoncapi_compat.h)

Projects not using pythoncapi_compat.h

Projects not using pythoncapi_compat.h:

• Cython doesn’t use pythoncapi_compat.h: see Cython issue #3934. For example, ModuleSetupCode.c provides functions like __Pyx_SET_REFCNT().

Project with a strict contributor agreement:

• zodbpickle