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warn about parameter tuple unpacking

This commit is contained in:
Benjamin Peterson 2008-06-08 23:00:00 +00:00
parent d5efd20406
commit f4fcdb6b8c
2 changed files with 9 additions and 0 deletions
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6
Lib/test/test_py3kwarn.py
View File

@ -173,6 +173,12 @@ class TestPy3KWarnings(unittest.TestCase):
with catch_warning() as w:
self.assertWarning(set(), w, expected)
def test_tuple_parameter_unpacking(self):
expected = "tuple parameter unpacking has been removed in 3.x"
with catch_warning() as w:
exec "def f((a, b)): pass"
self.assertWarning(None, w, expected)
def test_buffer(self):
expected = 'buffer() not supported in 3.x; use memoryview()'
with catch_warning() as w:

3
Python/ast.c
View File

@ -701,6 +701,9 @@ ast_for_arguments(struct compiling *c, const node *n)
/* def foo((x)): is not complex, special case. */
if (NCH(ch) != 1) {
/* We have complex arguments, setup for unpacking. */
if (Py_Py3kWarningFlag && !ast_warn(c, ch,
"tuple parameter unpacking has been removed in 3.x"))
goto error;
asdl_seq_SET(args, k++, compiler_complex_args(c, ch));
if (!asdl_seq_GET(args, k-1))
goto error;