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-rw-r--r--Doc/glossary.rst3
1 files changed, 3 insertions, 0 deletions
diff --git a/Doc/glossary.rst b/Doc/glossary.rst
index ae9949b..bacbf66 100644
--- a/Doc/glossary.rst
+++ b/Doc/glossary.rst
@@ -694,6 +694,9 @@ Glossary
CPython does not consistently apply the requirement that an iterator
define :meth:`~iterator.__iter__`.
+ And also please note that the free-threading CPython does not guarantee
+ the thread-safety of iterator operations.
+
key function
A key function or collation function is a callable that returns a value