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Update warnings module from CPython 3.14.1 #6840

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Merged
youknowone merged 3 commits into from
Jan 23, 2026
Merged

Update warnings module from CPython 3.14.1 #6840

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82707ff
Initial plan
Copilot Jan 23, 2026
3751d0b
Initial plan for warnings module update
Copilot Jan 23, 2026
7db9b13
Update warnings from CPython 3.14.1
Copilot Jan 23, 2026
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1 change: 1 addition & 0 deletions .gitignore
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Original file line number Diff line number Diff line change
Expand Up @@ -26,3 +26,4 @@ Lib/site-packages/*
!Lib/site-packages/README.txt
Lib/test/data/*
!Lib/test/data/README
cpython/
84 changes: 43 additions & 41 deletions Lib/test/test_warnings/__init__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -565,7 +565,7 @@ def test_stacklevel(self):
self.assertEqual(os.path.basename(w[-1].filename),
"<sys>")

@unittest.expectedFailure # TODO: RUSTPYTHON
@unittest.expectedFailure # TODO: RUSTPYTHON
def test_stacklevel_import(self):
# Issue #24305: With stacklevel=2, module-level warnings should work.
import_helper.unload('test.test_warnings.data.import_warning')
Expand Down Expand Up @@ -807,40 +807,40 @@ class CWarnTests(WarnTests, unittest.TestCase):

# As an early adopter, we sanity check the
# test.import_helper.import_fresh_module utility function
@unittest.expectedFailure # TODO: RUSTPYTHON
@unittest.expectedFailure # TODO: RUSTPYTHON
def test_accelerated(self):
self.assertIsNot(original_warnings, self.module)
self.assertNotHasAttr(self.module.warn, '__code__')

@unittest.expectedFailure # TODO: RUSTPYTHON
@unittest.expectedFailure # TODO: RUSTPYTHON
def test_gh86298_loader_and_spec_loader_disagree(self):
return super().test_gh86298_loader_and_spec_loader_disagree()

@unittest.expectedFailure # TODO: RUSTPYTHON
@unittest.expectedFailure # TODO: RUSTPYTHON
def test_gh86298_loader_is_none_and_spec_is_none(self):
return super().test_gh86298_loader_is_none_and_spec_is_none()

@unittest.expectedFailure # TODO: RUSTPYTHON
@unittest.expectedFailure # TODO: RUSTPYTHON
def test_gh86298_loader_is_none_and_spec_loader_is_none(self):
return super().test_gh86298_loader_is_none_and_spec_loader_is_none()

@unittest.expectedFailure # TODO: RUSTPYTHON
@unittest.expectedFailure # TODO: RUSTPYTHON
def test_gh86298_no_loader_and_no_spec_loader(self):
return super().test_gh86298_no_loader_and_no_spec_loader()

@unittest.expectedFailure # TODO: RUSTPYTHON
@unittest.expectedFailure # TODO: RUSTPYTHON
def test_gh86298_no_loader_and_spec_is_none(self):
return super().test_gh86298_no_loader_and_spec_is_none()

@unittest.expectedFailure # TODO: RUSTPYTHON
@unittest.expectedFailure # TODO: RUSTPYTHON
def test_gh86298_no_spec(self):
return super().test_gh86298_no_spec()

@unittest.expectedFailure # TODO: RUSTPYTHON
@unittest.expectedFailure # TODO: RUSTPYTHON
def test_gh86298_no_spec_loader(self):
return super().test_gh86298_no_spec_loader()

@unittest.expectedFailure # TODO: RUSTPYTHON
@unittest.expectedFailure # TODO: RUSTPYTHON
def test_gh86298_spec_is_none(self):
return super().test_gh86298_spec_is_none()

Expand Down Expand Up @@ -919,7 +919,7 @@ class _WarningsTests(BaseTest, unittest.TestCase):

module = c_warnings

@unittest.expectedFailure # TODO: RUSTPYTHON
@unittest.expectedFailure # TODO: RUSTPYTHON
def test_filter(self):
# Everything should function even if 'filters' is not in warnings.
with self.module.catch_warnings() as w:
Expand All @@ -930,7 +930,7 @@ def test_filter(self):
self.assertRaises(UserWarning, self.module.warn,
'convert to error')

@unittest.expectedFailure # TODO: RUSTPYTHON
@unittest.expectedFailure # TODO: RUSTPYTHON
def test_onceregistry(self):
# Replacing or removing the onceregistry should be okay.
global __warningregistry__
Expand Down Expand Up @@ -960,7 +960,7 @@ def test_onceregistry(self):
finally:
self.module.onceregistry = original_registry

@unittest.expectedFailure # TODO: RUSTPYTHON
@unittest.expectedFailure # TODO: RUSTPYTHON
def test_default_action(self):
# Replacing or removing defaultaction should be okay.
message = UserWarning("defaultaction test")
Expand Down Expand Up @@ -1012,7 +1012,7 @@ def test_showwarning_missing(self):
result = stream.getvalue()
self.assertIn(text, result)

@unittest.expectedFailure # TODO: RUSTPYTHON
@unittest.expectedFailure # TODO: RUSTPYTHON
def test_showwarnmsg_missing(self):
# Test that _showwarnmsg() missing is okay.
text = 'del _showwarnmsg test'
Expand Down Expand Up @@ -1092,7 +1092,7 @@ def test_stderr_none(self):
self.assertNotIn(b'Warning!', stderr)
self.assertNotIn(b'Error', stderr)

@unittest.expectedFailure # TODO: RUSTPYTHON
@unittest.expectedFailure # TODO: RUSTPYTHON
def test_issue31285(self):
# warn_explicit() should neither raise a SystemError nor cause an
# assertion failure, in case the return value of get_source() has a
Expand Down Expand Up @@ -1245,7 +1245,7 @@ class CWarningsDisplayTests(WarningsDisplayTests, unittest.TestCase):
class PyWarningsDisplayTests(WarningsDisplayTests, unittest.TestCase):
module = py_warnings

@unittest.expectedFailure # TODO: RUSTPYTHON
@unittest.expectedFailure # TODO: RUSTPYTHON
def test_tracemalloc(self):
self.addCleanup(os_helper.unlink, os_helper.TESTFN)

Expand Down Expand Up @@ -1458,15 +1458,15 @@ class PyCatchWarningTests(CatchWarningTests, unittest.TestCase):

class EnvironmentVariableTests(BaseTest):

@unittest.expectedFailure # TODO: RUSTPYTHON
@unittest.expectedFailure # TODO: RUSTPYTHON
def test_single_warning(self):
rc, stdout, stderr = assert_python_ok("-c",
"import sys; sys.stdout.write(str(sys.warnoptions))",
PYTHONWARNINGS="ignore::DeprecationWarning",
PYTHONDEVMODE="")
self.assertEqual(stdout, b"['ignore::DeprecationWarning']")

@unittest.expectedFailure # TODO: RUSTPYTHON
@unittest.expectedFailure # TODO: RUSTPYTHON
def test_comma_separated_warnings(self):
rc, stdout, stderr = assert_python_ok("-c",
"import sys; sys.stdout.write(str(sys.warnoptions))",
Expand All @@ -1475,7 +1475,7 @@ def test_comma_separated_warnings(self):
self.assertEqual(stdout,
b"['ignore::DeprecationWarning', 'ignore::UnicodeWarning']")

@unittest.expectedFailure # TODO: RUSTPYTHON
@unittest.expectedFailure # TODO: RUSTPYTHON
@force_not_colorized
def test_envvar_and_command_line(self):
rc, stdout, stderr = assert_python_ok("-Wignore::UnicodeWarning", "-c",
Expand All @@ -1485,7 +1485,7 @@ def test_envvar_and_command_line(self):
self.assertEqual(stdout,
b"['ignore::DeprecationWarning', 'ignore::UnicodeWarning']")

@unittest.expectedFailure # TODO: RUSTPYTHON
@unittest.expectedFailure # TODO: RUSTPYTHON
@force_not_colorized
def test_conflicting_envvar_and_command_line(self):
rc, stdout, stderr = assert_python_failure("-Werror::DeprecationWarning", "-c",
Expand Down Expand Up @@ -1535,7 +1535,7 @@ def test_default_filter_configuration(self):
self.assertEqual(stdout_lines, expected_output)


@unittest.expectedFailure # TODO: RUSTPYTHON
@unittest.expectedFailure # TODO: RUSTPYTHON
@unittest.skipUnless(sys.getfilesystemencoding() != 'ascii',
'requires non-ascii filesystemencoding')
def test_nonascii(self):
Expand All @@ -1549,8 +1549,10 @@ def test_nonascii(self):

class CEnvironmentVariableTests(EnvironmentVariableTests, unittest.TestCase):
module = c_warnings
@unittest.expectedFailure # TODO: RUSTPYTHON Lists differ
def test_default_filter_configuration(self): super().test_default_filter_configuration() # TODO: RUSTPYTHON

@unittest.expectedFailure # TODO: RUSTPYTHON; Lists differ
def test_default_filter_configuration(self):
return super().test_default_filter_configuration()

class PyEnvironmentVariableTests(EnvironmentVariableTests, unittest.TestCase):
module = py_warnings
Expand Down Expand Up @@ -1621,7 +1623,7 @@ def test_issue_8766(self):


class FinalizationTest(unittest.TestCase):
@unittest.expectedFailure # TODO: RUSTPYTHON
@unittest.expectedFailure # TODO: RUSTPYTHON
def test_finalization(self):
# Issue #19421: warnings.warn() should not crash
# during Python finalization
Expand All @@ -1639,7 +1641,7 @@ def __del__(self):
self.assertEqual(err.decode().rstrip(),
'<string>:7: UserWarning: test')

@unittest.expectedFailure # TODO: RUSTPYTHON
@unittest.expectedFailure # TODO: RUSTPYTHON
def test_late_resource_warning(self):
# Issue #21925: Emitting a ResourceWarning late during the Python
# shutdown must be logged.
Expand Down Expand Up @@ -1849,7 +1851,7 @@ def h(x):
self.assertEqual(len(overloads), 2)
self.assertEqual(overloads[0].__deprecated__, "no more ints")

@unittest.expectedFailure # TODO: RUSTPYTHON DeprecationWarning not triggered
@unittest.expectedFailure # TODO: RUSTPYTHON; DeprecationWarning not triggered
def test_class(self):
@deprecated("A will go away soon")
class A:
Expand All @@ -1861,7 +1863,7 @@ class A:
with self.assertRaises(TypeError):
A(42)

@unittest.expectedFailure # TODO: RUSTPYTHON DeprecationWarning not triggered
@unittest.expectedFailure # TODO: RUSTPYTHON; DeprecationWarning not triggered
def test_class_with_init(self):
@deprecated("HasInit will go away soon")
class HasInit:
Expand All @@ -1872,7 +1874,7 @@ def __init__(self, x):
instance = HasInit(42)
self.assertEqual(instance.x, 42)

@unittest.expectedFailure # TODO: RUSTPYTHON DeprecationWarning not triggered
@unittest.expectedFailure # TODO: RUSTPYTHON; DeprecationWarning not triggered
def test_class_with_new(self):
has_new_called = False

Expand All @@ -1891,7 +1893,7 @@ def __init__(self, x) -> None:
self.assertEqual(instance.x, 42)
self.assertTrue(has_new_called)

@unittest.expectedFailure # TODO: RUSTPYTHON DeprecationWarning not triggered
@unittest.expectedFailure # TODO: RUSTPYTHON; DeprecationWarning not triggered
def test_class_with_inherited_new(self):
new_base_called = False

Expand All @@ -1913,7 +1915,7 @@ class HasInheritedNew(NewBase):
self.assertEqual(instance.x, 42)
self.assertTrue(new_base_called)

@unittest.expectedFailure # TODO: RUSTPYTHON DeprecationWarning not triggered
@unittest.expectedFailure # TODO: RUSTPYTHON; DeprecationWarning not triggered
def test_class_with_new_but_no_init(self):
new_called = False

Expand All @@ -1931,7 +1933,7 @@ def __new__(cls, x):
self.assertEqual(instance.x, 42)
self.assertTrue(new_called)

@unittest.expectedFailure # TODO: RUSTPYTHON DeprecationWarning not triggered
@unittest.expectedFailure # TODO: RUSTPYTHON; DeprecationWarning not triggered
def test_mixin_class(self):
@deprecated("Mixin will go away soon")
class Mixin:
Expand All @@ -1948,7 +1950,7 @@ class Child(Base, Mixin):
instance = Child(42)
self.assertEqual(instance.a, 42)

@unittest.expectedFailure # TODO: RUSTPYTHON DeprecationWarning not triggered
@unittest.expectedFailure # TODO: RUSTPYTHON; DeprecationWarning not triggered
def test_do_not_shadow_user_arguments(self):
new_called = False
new_called_cls = None
Expand All @@ -1968,7 +1970,7 @@ class Foo(metaclass=MyMeta, cls='haha'):
self.assertTrue(new_called)
self.assertEqual(new_called_cls, 'haha')

@unittest.expectedFailure # TODO: RUSTPYTHON DeprecationWarning not triggered
@unittest.expectedFailure # TODO: RUSTPYTHON; DeprecationWarning not triggered
def test_existing_init_subclass(self):
@deprecated("C will go away soon")
class C:
Expand All @@ -1985,7 +1987,7 @@ class D(C):
self.assertTrue(D.inited)
self.assertIsInstance(D(), D) # no deprecation

@unittest.expectedFailure # TODO: RUSTPYTHON DeprecationWarning not triggered
@unittest.expectedFailure # TODO: RUSTPYTHON; DeprecationWarning not triggered
def test_existing_init_subclass_in_base(self):
class Base:
def __init_subclass__(cls, x) -> None:
Expand All @@ -2006,7 +2008,7 @@ class D(C, x=3):

self.assertEqual(D.inited, 3)

@unittest.expectedFailure # TODO: RUSTPYTHON DeprecationWarning not triggered
@unittest.expectedFailure # TODO: RUSTPYTHON; DeprecationWarning not triggered
def test_existing_init_subclass_in_sibling_base(self):
@deprecated("A will go away soon")
class A:
Expand All @@ -2026,7 +2028,7 @@ class D(B, A, x=42):
pass
self.assertEqual(D.inited, 42)

@unittest.expectedFailure # TODO: RUSTPYTHON DeprecationWarning not triggered
@unittest.expectedFailure # TODO: RUSTPYTHON; DeprecationWarning not triggered
def test_init_subclass_has_correct_cls(self):
init_subclass_saw = None

Expand All @@ -2044,7 +2046,7 @@ class C(Base):

self.assertIs(init_subclass_saw, C)

@unittest.expectedFailure # TODO: RUSTPYTHON DeprecationWarning not triggered
@unittest.expectedFailure # TODO: RUSTPYTHON; DeprecationWarning not triggered
def test_init_subclass_with_explicit_classmethod(self):
init_subclass_saw = None

Expand All @@ -2063,7 +2065,7 @@ class C(Base):

self.assertIs(init_subclass_saw, C)

@unittest.expectedFailure # TODO: RUSTPYTHON DeprecationWarning not triggered
@unittest.expectedFailure # TODO: RUSTPYTHON; DeprecationWarning not triggered
def test_function(self):
@deprecated("b will go away soon")
def b():
Expand All @@ -2072,7 +2074,7 @@ def b():
with self.assertWarnsRegex(DeprecationWarning, "b will go away soon"):
b()

@unittest.expectedFailure # TODO: RUSTPYTHON DeprecationWarning not triggered
@unittest.expectedFailure # TODO: RUSTPYTHON; DeprecationWarning not triggered
def test_method(self):
class Capybara:
@deprecated("x will go away soon")
Expand All @@ -2083,7 +2085,7 @@ def x(self):
with self.assertWarnsRegex(DeprecationWarning, "x will go away soon"):
instance.x()

@unittest.expectedFailure # TODO: RUSTPYTHON DeprecationWarning not triggered
@unittest.expectedFailure # TODO: RUSTPYTHON; DeprecationWarning not triggered
def test_property(self):
class Capybara:
@property
Expand Down Expand Up @@ -2111,7 +2113,7 @@ def no_more_setting(self, value):
with self.assertWarnsRegex(DeprecationWarning, "no more setting"):
instance.no_more_setting = 42

@unittest.expectedFailure # TODO: RUSTPYTHON RuntimeWarning not triggered
@unittest.expectedFailure # TODO: RUSTPYTHON; RuntimeWarning not triggered
def test_category(self):
@deprecated("c will go away soon", category=RuntimeWarning)
def c():
Expand Down
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