Mention Ellipsis pickling in the docs (#103660)

diff --git a/Doc/library/pickle.rst b/Doc/library/pickle.rst
index ba00ba29f5ba48247168a65560e3b9e06ec239b0..93387fb0b4503821abbc0189430f63c0d3587cf9 100644 (file)
--- a/Doc/library/pickle.rst
+++ b/Doc/library/pickle.rst
@@ -494,7 +494,8 @@ What can be pickled and unpickled?
 
 The following types can be pickled:
 
-* ``None``, ``True``, and ``False``;
+* built-in constants (``None``, ``True``, ``False``, ``Ellipsis``, and
+  ``NotImplemented``);
 
 * integers, floating-point numbers, complex numbers;