diff options
| -rw-r--r-- | Lib/test/test_keywordonlyarg.py | 8 | ||||
| -rw-r--r-- | Misc/NEWS | 4 | ||||
| -rw-r--r-- | Python/symtable.c | 3 |
3 files changed, 15 insertions, 0 deletions
diff --git a/Lib/test/test_keywordonlyarg.py b/Lib/test/test_keywordonlyarg.py index 44be32c..61d40f9 100644 --- a/Lib/test/test_keywordonlyarg.py +++ b/Lib/test/test_keywordonlyarg.py @@ -162,6 +162,14 @@ class KeywordOnlyArgTestCase(unittest.TestCase): self.assertEqual(Example.f(Example(), k1=1, k2=2), (1, 2)) self.assertRaises(TypeError, Example.f, k1=1, k2=2) + def test_issue13343(self): + # The Python compiler must scan all symbols of a function to + # determine their scope: global, local, cell... + # This was not done for the default values of keyword + # arguments in a lambda definition, and the following line + # used to fail with a SystemError. + lambda *, k1=unittest: None + def test_main(): run_unittest(KeywordOnlyArgTestCase) @@ -10,6 +10,10 @@ What's New in Python 3.3 Alpha 1? Core and Builtins ----------------- +- Issue #13343: Fix a SystemError when a lambda expression uses a global + variable in the default value of a keyword-only argument: + (lambda *, arg=GLOBAL_NAME: None) + - Issue #12797: Added custom opener parameter to builtin open() and FileIO.open(). diff --git a/Python/symtable.c b/Python/symtable.c index 3578b0c..824a53f 100644 --- a/Python/symtable.c +++ b/Python/symtable.c @@ -1300,6 +1300,9 @@ symtable_visit_expr(struct symtable *st, expr_ty e) return 0; if (e->v.Lambda.args->defaults) VISIT_SEQ(st, expr, e->v.Lambda.args->defaults); + if (e->v.Lambda.args->kw_defaults) + VISIT_KWONLYDEFAULTS(st, + e->v.Lambda.args->kw_defaults); if (!symtable_enter_block(st, lambda, FunctionBlock, (void *)e, e->lineno, e->col_offset)) |