RustPython · youknowone · May 17, 2026 · May 17, 2026 · May 17, 2026 · May 17, 2026
diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
@@ -290,18 +290,21 @@ jobs:
         - os: macos-latest
           extra_test_args:
             - '-u all'
-          env_polluting_tests: []
+          env_polluting_tests:
+            - test_set
           skips: []
           timeout: 50
         - os: ubuntu-latest
           extra_test_args:
             - '-u all'
-          env_polluting_tests: []
+          env_polluting_tests:
+            - test_set
           skips: []
           timeout: 60
         - os: windows-2025
           extra_test_args: [] # TODO: Enable '-u all'
-          env_polluting_tests: []
+          env_polluting_tests:
+            - test_set
           skips:
             - test_rlcompleter
             - test_pathlib # panic by surrogate chars

diff --git a/Lib/test/seq_tests.py b/Lib/test/seq_tests.py
@@ -439,7 +439,7 @@ def test_pickle(self):
             self.assertEqual(lst2, lst)
             self.assertNotEqual(id(lst2), id(lst))
 
-    @unittest.expectedFailure  # TODO: RUSTPYTHON
+    @unittest.skip("TODO: RUSTPYTHON; hangs")
     def test_free_after_iterating(self):
         support.check_free_after_iterating(self, iter, self.type2test)
         support.check_free_after_iterating(self, reversed, self.type2test)
diff --git a/Lib/test/support/__init__.py b/Lib/test/support/__init__.py
@@ -548,7 +548,6 @@ def requires_lzma(reason='requires lzma'):
         import lzma
     except ImportError:
         lzma = None
-    lzma = None # XXX: RUSTPYTHON; xz is not supported yet
     return unittest.skipUnless(lzma, reason)
 
 def requires_zstd(reason='requires zstd'):
@@ -856,22 +855,13 @@ def gc_collect():
     longer than expected.  This function tries its best to force all garbage
     objects to disappear.
     """
-    return # TODO: RUSTPYTHON
-
     import gc
     gc.collect()
     gc.collect()
     gc.collect()
 
 @contextlib.contextmanager
 def disable_gc():
-    # TODO: RUSTPYTHON; GC is not supported yet
-    try:
-        yield
-    finally:
-        pass
-    return
-
     import gc
     have_gc = gc.isenabled()
     gc.disable()
@@ -2004,10 +1994,6 @@ def _check_tracemalloc():
 
 
 def check_free_after_iterating(test, iter, cls, args=()):
-    # TODO: RUSTPYTHON; GC is not supported yet
-    test.assertTrue(False)
-    return
-
     done = False
     def wrapper():
         class A(cls):
@@ -3048,6 +3034,10 @@ def get_signal_name(exitcode):
     except KeyError:
         pass
 
+    # Format Windows exit status as hexadecimal
+    if 0xC0000000 <= exitcode:
+        return f"0x{exitcode:X}"
+
     return None
 
 class BrokenIter:

diff --git a/Lib/test/support/_hypothesis_stubs/__init__.py b/Lib/test/support/_hypothesis_stubs/__init__.py
@@ -1,6 +1,6 @@
+from enum import Enum
 import functools
 import unittest
-from enum import Enum
 
 __all__ = [
     "given",

diff --git a/Lib/test/support/ast_helper.py b/Lib/test/support/ast_helper.py
@@ -1,6 +1,5 @@
 import ast
 
-
 class ASTTestMixin:
     """Test mixing to have basic assertions for AST nodes."""
 

diff --git a/Lib/test/support/asyncore.py b/Lib/test/support/asyncore.py
@@ -51,27 +51,17 @@
 sophisticated high-performance network servers and clients a snap.
 """
 
-import os
 import select
 import socket
 import sys
 import time
 import warnings
-from errno import (
-    EAGAIN,
-    EALREADY,
-    EBADF,
-    ECONNABORTED,
-    ECONNRESET,
-    EINPROGRESS,
-    EINVAL,
-    EISCONN,
-    ENOTCONN,
-    EPIPE,
-    ESHUTDOWN,
-    EWOULDBLOCK,
-    errorcode,
-)
+
+import os
+from errno import EALREADY, EINPROGRESS, EWOULDBLOCK, ECONNRESET, EINVAL, \
+     ENOTCONN, ESHUTDOWN, EISCONN, EBADF, ECONNABORTED, EPIPE, EAGAIN, \
+     errorcode
+
 
 _DISCONNECTED = frozenset({ECONNRESET, ENOTCONN, ESHUTDOWN, ECONNABORTED, EPIPE,
                            EBADF})

diff --git a/Lib/test/support/bytecode_helper.py b/Lib/test/support/bytecode_helper.py
@@ -1,10 +1,9 @@
 """bytecode_helper - support tools for testing correct bytecode generation"""
 
+import unittest
 import dis
 import io
 import opcode
-import unittest
-
 try:
     import _testinternalcapi
 except ImportError:

diff --git a/Lib/test/support/channels.py b/Lib/test/support/channels.py
@@ -1,23 +1,19 @@
 """Cross-interpreter Channels High Level Module."""
 
 import time
-from concurrent.interpreters import _crossinterp
-from concurrent.interpreters._crossinterp import (
-    UNBOUND_ERROR,
-    UNBOUND_REMOVE,
-)
-
 import _interpchannels as _channels
+from concurrent.interpreters import _crossinterp
 
 # aliases:
 from _interpchannels import (
-    ChannelClosedError,
-    ChannelEmptyError,
-    ChannelError,
-    ChannelNotEmptyError,
-    ChannelNotFoundError,
+    ChannelError, ChannelNotFoundError, ChannelClosedError,
+    ChannelEmptyError, ChannelNotEmptyError,
+)
+from concurrent.interpreters._crossinterp import (
+    UNBOUND_ERROR, UNBOUND_REMOVE,
 )
 
+
 __all__ = [
     'UNBOUND', 'UNBOUND_ERROR', 'UNBOUND_REMOVE',
     'create', 'list_all',

diff --git a/Lib/test/support/hashlib_helper.py b/Lib/test/support/hashlib_helper.py
@@ -2,7 +2,6 @@
 import hashlib
 import importlib
 import unittest
-
 from test.support.import_helper import import_module
 
 try:

diff --git a/Lib/test/support/hypothesis_helper.py b/Lib/test/support/hypothesis_helper.py
@@ -7,10 +7,9 @@
 else:
     # Regrtest changes to use a tempdir as the working directory, so we have
     # to tell Hypothesis to use the original in order to persist the database.
-    from hypothesis.configuration import set_hypothesis_home_dir
-
     from test.support import has_socket_support
     from test.support.os_helper import SAVEDCWD
+    from hypothesis.configuration import set_hypothesis_home_dir
 
     set_hypothesis_home_dir(os.path.join(SAVEDCWD, ".hypothesis"))
 

diff --git a/Lib/test/support/i18n_helper.py b/Lib/test/support/i18n_helper.py
@@ -3,10 +3,10 @@
 import sys
 import unittest
 from pathlib import Path
-
 from test.support import REPO_ROOT, TEST_HOME_DIR, requires_subprocess
 from test.test_tools import skip_if_missing
 
+
 pygettext = Path(REPO_ROOT) / 'Tools' / 'i18n' / 'pygettext.py'
 
 msgid_pattern = re.compile(r'msgid(.*?)(?:msgid_plural|msgctxt|msgstr)',

diff --git a/Lib/test/support/logging_helper.py b/Lib/test/support/logging_helper.py
@@ -1,6 +1,5 @@
 import logging.handlers
 
-
 class TestHandler(logging.handlers.BufferingHandler):
     def __init__(self, matcher):
         # BufferingHandler takes a "capacity" argument

diff --git a/Lib/test/support/os_helper.py b/Lib/test/support/os_helper.py
@@ -13,6 +13,7 @@
 
 from test import support
 
+
 # Filename used for testing
 TESTFN_ASCII = '@test'
 

diff --git a/Lib/test/support/pty_helper.py b/Lib/test/support/pty_helper.py
@@ -10,12 +10,19 @@
 
 from test.support.import_helper import import_module
 
-
 def run_pty(script, input=b"dummy input\r", env=None):
     pty = import_module('pty')
     output = bytearray()
     [master, slave] = pty.openpty()
     args = (sys.executable, '-c', script)
+
+    # Isolate readline from personal init files by setting INPUTRC
+    # to an empty file. See also GH-142353.
+    if env is None:
+        env = {**os.environ.copy(), "INPUTRC": os.devnull}
+    else:
+        env.setdefault("INPUTRC", os.devnull)
+
     proc = subprocess.Popen(args, stdin=slave, stdout=slave, stderr=slave, env=env)
     os.close(slave)
     with ExitStack() as cleanup:

diff --git a/Lib/test/support/script_helper.py b/Lib/test/support/script_helper.py
@@ -3,16 +3,17 @@
 
 import collections
 import importlib
+import sys
 import os
 import os.path
-import py_compile
 import subprocess
-import sys
-from importlib.util import source_from_cache
+import py_compile
 
+from importlib.util import source_from_cache
 from test import support
 from test.support.import_helper import make_legacy_pyc
 
+
 # Cached result of the expensive test performed in the function below.
 __cached_interp_requires_environment = None
 

diff --git a/Lib/test/support/smtpd.py b/Lib/test/support/smtpd.py
@@ -70,17 +70,16 @@
 # - Handle more ESMTP extensions
 # - handle error codes from the backend smtpd
 
-import collections
+import sys
+import os
 import errno
 import getopt
-import os
-import socket
-import sys
 import time
-from email._header_value_parser import get_addr_spec, get_angle_addr
+import socket
+import collections
+from test.support import asyncore, asynchat
 from warnings import warn
-
-from test.support import asynchat, asyncore
+from email._header_value_parser import get_addr_spec, get_angle_addr
 
 __all__ = [
     "SMTPChannel", "SMTPServer", "DebuggingServer", "PureProxy",

diff --git a/Lib/test/support/socket_helper.py b/Lib/test/support/socket_helper.py
@@ -2,8 +2,8 @@
 import errno
 import os.path
 import socket
-import subprocess
 import sys
+import subprocess
 import tempfile
 import unittest
 

diff --git a/Lib/test/support/strace_helper.py b/Lib/test/support/strace_helper.py
@@ -1,11 +1,10 @@
-import os
 import re
 import sys
 import textwrap
+import os
 import unittest
 from dataclasses import dataclass
 from functools import cache
-
 from test import support
 from test.support.script_helper import run_python_until_end
 

diff --git a/Lib/test/support/threading_helper.py b/Lib/test/support/threading_helper.py
@@ -8,6 +8,7 @@
 
 from test import support
 
+
 #=======================================================================
 # Threading support to prevent reporting refleaks when running regrtest.py -R
 
@@ -249,21 +250,32 @@ def requires_working_threading(*, module=False):
         return unittest.skipUnless(can_start_thread, msg)
 
 
-def run_concurrently(worker_func, nthreads, args=(), kwargs={}):
+def run_concurrently(worker_func, nthreads=None, args=(), kwargs={}):
     """
-    Run the worker function concurrently in multiple threads.
+    Run the worker function(s) concurrently in multiple threads.
+
+    If `worker_func` is a single callable, it is used for all threads.
+    If it is a list of callables, each callable is used for one thread.
     """
+    from collections.abc import Iterable
+
+    if nthreads is None:
+        nthreads = len(worker_func)
+    if not isinstance(worker_func, Iterable):
+        worker_func = [worker_func] * nthreads
+    assert len(worker_func) == nthreads
+
     barrier = threading.Barrier(nthreads)
 
-    def wrapper_func(*args, **kwargs):
+    def wrapper_func(func, *args, **kwargs):
         # Wait for all threads to reach this point before proceeding.
         barrier.wait()
-        worker_func(*args, **kwargs)
+        func(*args, **kwargs)
 
     with catch_threading_exception() as cm:
         workers = [
-            threading.Thread(target=wrapper_func, args=args, kwargs=kwargs)
-            for _ in range(nthreads)
+            threading.Thread(target=wrapper_func, args=(func, *args), kwargs=kwargs)
+            for func in worker_func
         ]
         with start_threads(workers):
             pass

diff --git a/Lib/test/support/venv.py b/Lib/test/support/venv.py
@@ -1,8 +1,8 @@
 import contextlib
 import logging
 import os
-import shlex
 import subprocess
+import shlex
 import sys
 import sysconfig
 import tempfile

diff --git a/Lib/test/test_array.py b/Lib/test/test_array.py
@@ -1200,7 +1200,7 @@ def test_obsolete_write_lock(self):
         a = array.array('B', b"")
         self.assertRaises(BufferError, _testcapi.getbuffer_with_null_view, a)
 
-    @unittest.expectedFailure  # TODO: RUSTPYTHON
+    @unittest.skip("TODO: RUSTPYTHON; hangs")
     def test_free_after_iterating(self):
         support.check_free_after_iterating(self, iter, array.array,
                                            (self.typecode,))

diff --git a/Lib/test/test_ast/test_ast.py b/Lib/test/test_ast/test_ast.py
@@ -114,7 +114,6 @@ def cleanup():
         with self.assertRaisesRegex(AttributeError, msg):
             ast.AST()
 
-    @unittest.expectedFailure  # TODO: RUSTPYTHON; AssertionError: <test.test_ast.test_ast.AST_Tests.test_AST_garbage_collection.<locals>.X object at 0x7e85c3a80> is not None
     def test_AST_garbage_collection(self):
         class X:
             pass
Original file line number	Diff line number	Diff line change
Expand Up		@@ -13,6 +13,7 @@

		from test import support


		# Filename used for testing
		TESTFN_ASCII = '@test'

Expand Down