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ðŸ“ ..
ðŸ“„ abstract.h(8.04 KB)
ðŸ“„ bytearrayobject.h(1.27 KB)
ðŸ“„ bytesobject.h(4.46 KB)
ðŸ“„ cellobject.h(723 B)
ðŸ“„ ceval.h(1.21 KB)
ðŸ“„ classobject.h(1.62 KB)
ðŸ“„ code.h(11.21 KB)
ðŸ“„ compile.h(2.17 KB)
ðŸ“„ complexobject.h(1.22 KB)
ðŸ“„ context.h(1.91 KB)
ðŸ“„ descrobject.h(1.6 KB)
ðŸ“„ dictobject.h(3.25 KB)
ðŸ“„ fileobject.h(818 B)
ðŸ“„ fileutils.h(232 B)
ðŸ“„ floatobject.h(702 B)
ðŸ“„ frameobject.h(1.08 KB)
ðŸ“„ funcobject.h(4.32 KB)
ðŸ“„ genobject.h(3.2 KB)
ðŸ“„ import.h(1.49 KB)
ðŸ“„ initconfig.h(7.63 KB)
ðŸ“„ listobject.h(1.73 KB)
ðŸ“„ longintrepr.h(3.73 KB)
ðŸ“„ longobject.h(4.43 KB)
ðŸ“„ methodobject.h(2.5 KB)
ðŸ“„ modsupport.h(4.2 KB)
ðŸ“„ object.h(17.88 KB)
ðŸ“„ objimpl.h(2.93 KB)
ðŸ“„ odictobject.h(1.27 KB)
ðŸ“„ picklebufobject.h(846 B)
ðŸ“„ pthread_stubs.h(3.42 KB)
ðŸ“„ pyctype.h(1.35 KB)
ðŸ“„ pydebug.h(1.05 KB)
ðŸ“„ pyerrors.h(4.42 KB)
ðŸ“„ pyfpe.h(444 B)
ðŸ“„ pyframe.h(582 B)
ðŸ“„ pylifecycle.h(2.05 KB)
ðŸ“„ pymem.h(3.3 KB)
ðŸ“„ pystate.h(14.01 KB)
ðŸ“„ pythonrun.h(4.7 KB)
ðŸ“„ pythread.h(1.39 KB)
ðŸ“„ pytime.h(11.87 KB)
ðŸ“„ setobject.h(1.95 KB)
ðŸ“„ sysmodule.h(489 B)
ðŸ“„ traceback.h(444 B)
ðŸ“„ tupleobject.h(1.48 KB)
ðŸ“„ unicodeobject.h(40.93 KB)
ðŸ“„ warnings.h(560 B)
ðŸ“„ weakrefobject.h(2.05 KB)

Editing: weakrefobject.h

#ifndef Py_CPYTHON_WEAKREFOBJECT_H
#  error "this header file must not be included directly"
#endif

/* PyWeakReference is the base struct for the Python ReferenceType, ProxyType,
 * and CallableProxyType.
 */
struct _PyWeakReference {
    PyObject_HEAD

/* The object to which this is a weak reference, or Py_None if none.
     * Note that this is a stealth reference:  wr_object's refcount is
     * not incremented to reflect this pointer.
     */
    PyObject *wr_object;

/* A callable to invoke when wr_object dies, or NULL if none. */
    PyObject *wr_callback;

/* A cache for wr_object's hash code.  As usual for hashes, this is -1
     * if the hash code isn't known yet.
     */
    Py_hash_t hash;

/* If wr_object is weakly referenced, wr_object has a doubly-linked NULL-
     * terminated list of weak references to it.  These are the list pointers.
     * If wr_object goes away, wr_object is set to Py_None, and these pointers
     * have no meaning then.
     */
    PyWeakReference *wr_prev;
    PyWeakReference *wr_next;
    vectorcallfunc vectorcall;
};

PyAPI_FUNC(Py_ssize_t) _PyWeakref_GetWeakrefCount(PyWeakReference *head);

PyAPI_FUNC(void) _PyWeakref_ClearRef(PyWeakReference *self);

static inline PyObject* PyWeakref_GET_OBJECT(PyObject *ref_obj) {
    PyWeakReference *ref;
    PyObject *obj;
    assert(PyWeakref_Check(ref_obj));
    ref = _Py_CAST(PyWeakReference*, ref_obj);
    obj = ref->wr_object;
    // Explanation for the Py_REFCNT() check: when a weakref's target is part
    // of a long chain of deallocations which triggers the trashcan mechanism,
    // clearing the weakrefs can be delayed long after the target's refcount
    // has dropped to zero.  In the meantime, code accessing the weakref will
    // be able to "see" the target object even though it is supposed to be
    // unreachable.  See issue gh-60806.
    if (Py_REFCNT(obj) > 0) {
        return obj;
    }
    return Py_None;
}
#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
#  define PyWeakref_GET_OBJECT(ref) PyWeakref_GET_OBJECT(_PyObject_CAST(ref))
#endif

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