gh-151925: Clarify ast.DictComp.value for dict unpacking (GH-152463)

https://github.com/python/cpython/commit/4bbc20bd6dc9418a89d77f0b268aaec8843bf9d0
commit: 4bbc20bd6dc9418a89d77f0b268aaec8843bf9d0
branch: main
author: AkhilByju <[email protected]>
committer: encukou <[email protected]>
date: 2026-08-05T16:20:07Z
summary:

gh-151925: Clarify ast.DictComp.value for dict unpacking (GH-152463)

files:
M Doc/library/ast.rst

diff --git a/Doc/library/ast.rst b/Doc/library/ast.rst
index 5bdfe7c182de3a..0ea183582455cd 100644
--- a/Doc/library/ast.rst
+++ b/Doc/library/ast.rst
@@ -806,7 +806,8 @@ Comprehensions
    List and set comprehensions, generator expressions, and dictionary
    comprehensions. ``elt`` (or ``key`` and ``value``) is a single node
    representing the part that will be evaluated for each item.
-
+   For dictionary comprehensions using unpacking, for example
+   ``{**item for item in items}``, ``value`` is ``None``,
    ``generators`` is a list of :class:`comprehension` nodes.
 
    .. doctest::

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