Add :c:func:`Py_GetConstantRef` and :c:func:`Py_GetConstant` functions to
get constants. For example, Py_GetConstantRef(Py_ZERO) returns a
:term:`strong reference` to the constant zero. Patch by Victor Stinner.
Add :c:func:`Py_GetConstantRef` and :c:func:`Py_GetConstant` functions to
get constants. For example, Py_GetConstantRef(Py_ZERO) returns a
:term:`strong reference` to the constant zero. Patch by Victor Stinner.