[issue39573] Make PyObject an opaque structure in the limited C API

[STINNER Victor]

STINNER Victor <vstinner at python.org> added the comment:

TODO: Add Py_IS_TYPE() macro:

#define Py_IS_TYPE(ob, tp) (Py_TYPE(ob) == (tp)) 

For example, replace:

    #define PyBool_Check(x) (Py_TYPE(x) == &PyBool_Type) 

with:

    #define PyBool_Check(x) Py_IS_TYPE(x, &PyBool_Type)

IMHO it makes the code more readable.

https://github.com/nascheme/cpython/commit/c156300592dc1eab234b74ed5b7cc90a020ab82b

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue39573>
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