gh-86482: Document assignment expression need for ()s (#23291) · mpage/cpython@ff0d621 · GitHub

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pythongh-86482: Document assignment expression need for ()s (python#23291)

Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>

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• Misc/NEWS.d/next/Core and Builtins
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Original file line number	Diff line number	Diff line change
@@ -1766,6 +1766,13 @@ Or, when processing a file stream in chunks:
1766	1766	while chunk := file.read(9000):
1767	1767	process(chunk)
1768	1768
	1769	+ Assignment expressions must be surrounded by parentheses when used
	1770	+ as sub-expressions in slicing, conditional, lambda,
	1771	+ keyword-argument, and comprehension-if expressions
	1772	+ and in ``assert`` and ``with`` statements.
	1773	+ In all other places where they can be used, parentheses are not required,
	1774	+ including in ``if`` and ``while`` statements.
	1775	+
1769	1776	.. versionadded:: 3.8
1770	1777	See :pep:`572` for more details about assignment expressions.
1771	1778

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@@ -0,0 +1 @@
	1	+ Document some places where an assignment expression needs parentheses.

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