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The C and C++ Include Header Files

cat -n /usr/include/python3.14/cpython/bytesobject.h

     1	#ifndef Py_CPYTHON_BYTESOBJECT_H
     2	#  error "this header file must not be included directly"
     3	#endif
     4	
     5	typedef struct {
     6	    PyObject_VAR_HEAD
     7	    Py_DEPRECATED(3.11) Py_hash_t ob_shash;
     8	    char ob_sval[1];
     9	
    10	    /* Invariants:
    11	     *     ob_sval contains space for 'ob_size+1' elements.
    12	     *     ob_sval[ob_size] == 0.
    13	     *     ob_shash is the hash of the byte string or -1 if not computed yet.
    14	     */
    15	} PyBytesObject;
    16	
    17	PyAPI_FUNC(int) _PyBytes_Resize(PyObject **, Py_ssize_t);
    18	
    19	/* Macros and static inline functions, trading safety for speed */
    20	#define _PyBytes_CAST(op) \
    21	    (assert(PyBytes_Check(op)), _Py_CAST(PyBytesObject*, op))
    22	
    23	static inline char* PyBytes_AS_STRING(PyObject *op)
    24	{
    25	    return _PyBytes_CAST(op)->ob_sval;
    26	}
    27	#define PyBytes_AS_STRING(op) PyBytes_AS_STRING(_PyObject_CAST(op))
    28	
    29	static inline Py_ssize_t PyBytes_GET_SIZE(PyObject *op) {
    30	    PyBytesObject *self = _PyBytes_CAST(op);
    31	    return Py_SIZE(self);
    32	}
    33	#define PyBytes_GET_SIZE(self) PyBytes_GET_SIZE(_PyObject_CAST(self))
    34	
    35	PyAPI_FUNC(PyObject*) PyBytes_Join(PyObject *sep, PyObject *iterable);
    36	
    37	// Deprecated alias kept for backward compatibility
    38	Py_DEPRECATED(3.14) static inline PyObject*
    39	_PyBytes_Join(PyObject *sep, PyObject *iterable)
    40	{
    41	    return PyBytes_Join(sep, iterable);
    42	}