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-rw-r--r--Doc/library/pickle.rst3
1 files changed, 2 insertions, 1 deletions
diff --git a/Doc/library/pickle.rst b/Doc/library/pickle.rst
index 79476b0..d6be4ba 100644
--- 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;