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bpo-35877: Make parenthesis optional for named expression in while statement (GH-11724)

* Add parenthesis optional in named expressions for while statement* Add NEWS entry

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Lines changed: 1 addition & 1 deletion

Original file line number	Diff line number	Diff line change
`@@ -72,7 +72,7 @@ assert_stmt: 'assert' test [',' test]`
`72`	`72`	`compound_stmt: if_stmt \| while_stmt \| for_stmt \| try_stmt \| with_stmt \| funcdef \| classdef \| decorated \| async_stmt`
`73`	`73`	`async_stmt: 'async' (funcdef \| with_stmt \| for_stmt)`
`74`	`74`	`if_stmt: 'if' namedexpr_test ':' suite ('elif' namedexpr_test ':' suite)* ['else' ':' suite]`
`75`		`-while_stmt: 'while'test ':' suite ['else' ':' suite]`
	`75`	`+while_stmt: 'while'namedexpr_test ':' suite ['else' ':' suite]`
`76`	`76`	`for_stmt: 'for' exprlist 'in' testlist ':' [TYPE_COMMENT] suite ['else' ':' suite]`
`77`	`77`	`try_stmt: ('try' ':' suite`
`78`	`78`	`((except_clause ':' suite)+`

Lines changed: 1 addition & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -426,6 +426,7 @@ def test_named_expressions(self):`
`426`	`426`	`self.check_suite("(a := 1)")`
`427`	`427`	`self.check_suite("(a := a)")`
`428`	`428`	`self.check_suite("if (match := pattern.search(data)) is None: pass")`
	`429`	`+self.check_suite("while match := pattern.search(f.read()): pass")`
`429`	`430`	`self.check_suite("[y := f(x), y2, y3]")`
`430`	`431`	`self.check_suite("filtered_data = [y for x in data if (y := f(x)) is None]")`
`431`	`432`	`self.check_suite("(y := f(x))")`

Lines changed: 2 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,2 @@`
	`1`	`+Make parenthesis optional for named expressions in while statement. Patch by`
	`2`	`+Karthikeyan Singaravelan.`

Lines changed: 1 addition & 1 deletion

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