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-rw-r--r--Doc/c-api/typeobj.rst10
1 files changed, 10 insertions, 0 deletions
diff --git a/Doc/c-api/typeobj.rst b/Doc/c-api/typeobj.rst
index 644830b..fd8f49c 100644
--- a/Doc/c-api/typeobj.rst
+++ b/Doc/c-api/typeobj.rst
@@ -1313,6 +1313,16 @@ and :c:type:`PyType_Type` effectively act as defaults.)
.. versionadded:: 3.10
+ .. data:: Py_TPFLAGS_VALID_VERSION_TAG
+
+ Internal. Do not set or unset this flag.
+ To indicate that a class has changed call :c:func:`PyType_Modified`
+
+ .. warning::
+ This flag is present in header files, but is an internal feature and should
+ not be used. It will be removed in a future version of CPython
+
+
.. c:member:: const char* PyTypeObject.tp_doc
An optional pointer to a NUL-terminated C string giving the docstring for this