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| author | Xtreak <tir.karthi@gmail.com> | 2019-02-02 03:10:16 +0530 |
|---|---|---|
| committer | Emily Morehouse <emilyemorehouse@gmail.com> | 2019-02-01 14:40:16 -0700 |
| commit | d4fceaafb8e3f8700d9ec6ab37a51e903392f74f (patch) | |
| tree | fb3681a954e8d42a3a3161ad38eebcb4eeaf9884 | |
| parent | 85d83ec7c99727476c79feb5c34c65264a99144e (diff) | |
| download | cpython-git-d4fceaafb8e3f8700d9ec6ab37a51e903392f74f.tar.gz | |
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
| -rw-r--r-- | Grammar/Grammar | 2 | ||||
| -rw-r--r-- | Lib/test/test_parser.py | 1 | ||||
| -rw-r--r-- | Misc/NEWS.d/next/Core and Builtins/2019-02-01-22-38-11.bpo-35877.Jrse8f.rst | 2 | ||||
| -rw-r--r-- | Python/graminit.c | 2 |
4 files changed, 5 insertions, 2 deletions
diff --git a/Grammar/Grammar b/Grammar/Grammar index e65a688e4c..a425978059 100644 --- a/Grammar/Grammar +++ b/Grammar/Grammar @@ -72,7 +72,7 @@ assert_stmt: 'assert' test [',' test] compound_stmt: if_stmt | while_stmt | for_stmt | try_stmt | with_stmt | funcdef | classdef | decorated | async_stmt async_stmt: 'async' (funcdef | with_stmt | for_stmt) if_stmt: 'if' namedexpr_test ':' suite ('elif' namedexpr_test ':' suite)* ['else' ':' suite] -while_stmt: 'while' test ':' suite ['else' ':' suite] +while_stmt: 'while' namedexpr_test ':' suite ['else' ':' suite] for_stmt: 'for' exprlist 'in' testlist ':' [TYPE_COMMENT] suite ['else' ':' suite] try_stmt: ('try' ':' suite ((except_clause ':' suite)+ diff --git a/Lib/test/test_parser.py b/Lib/test/test_parser.py index 19f1782036..0afeb322e9 100644 --- a/Lib/test/test_parser.py +++ b/Lib/test/test_parser.py @@ -426,6 +426,7 @@ class RoundtripLegalSyntaxTestCase(unittest.TestCase): self.check_suite("(a := 1)") self.check_suite("(a := a)") self.check_suite("if (match := pattern.search(data)) is None: pass") + self.check_suite("while match := pattern.search(f.read()): pass") self.check_suite("[y := f(x), y**2, y**3]") self.check_suite("filtered_data = [y for x in data if (y := f(x)) is None]") self.check_suite("(y := f(x))") diff --git a/Misc/NEWS.d/next/Core and Builtins/2019-02-01-22-38-11.bpo-35877.Jrse8f.rst b/Misc/NEWS.d/next/Core and Builtins/2019-02-01-22-38-11.bpo-35877.Jrse8f.rst new file mode 100644 index 0000000000..1fb173fe46 --- /dev/null +++ b/Misc/NEWS.d/next/Core and Builtins/2019-02-01-22-38-11.bpo-35877.Jrse8f.rst @@ -0,0 +1,2 @@ +Make parenthesis optional for named expressions in while statement. Patch by +Karthikeyan Singaravelan. diff --git a/Python/graminit.c b/Python/graminit.c index 6e0f19891b..5cdde2789c 100644 --- a/Python/graminit.c +++ b/Python/graminit.c @@ -971,7 +971,7 @@ static arc arcs_42_0[1] = { {103, 1}, }; static arc arcs_42_1[1] = { - {26, 2}, + {99, 2}, }; static arc arcs_42_2[1] = { {27, 3}, |