* Implement _collections.OrderedDict
Extracted from #6799: native OrderedDict as a dict subclass,
iterator mutation tracking, and mapping-view set operations.
* Add OrderedDict, warnings source lines, and socket sendmsg
Implement _collections.OrderedDict as a dict subclass with a
linked list of insertion-order nodes.
Pack struct F/D as native float/double complex pairs, and report
unexpected __replace__ field names as a list repr.
Register encodings.latin_1 at startup. Reject NUL in input()
prompts. Copy non-exact type dicts in mapping order.
Fetch warning source lines through _bless_my_loader and unicode
splitlines. Keep the last warnings.filters list after deletion.
Snapshot sendmsg sequences before converting buffers, parse
ancillary ints with __index__, and dispatch AF_CAN by protocol.
Store sys.trace and sys.profile on each ThreadSlot so
_settraceallthreads/_setprofileallthreads are visible to
sys.gettrace/getprofile on other threads.
Use <frozen importlib._bootstrap> as frozen importlib
co_filename. Keep HEAPTYPE socket objects GC-tracked.
Assisted-by: Grok:grok-4.6
* Load marshal via readinto and dump sets in dumps order
marshal.load fills a scratch buffer with readinto on a
contiguous writable memoryview, and rejects a returned length
other than the requested size.
set and frozenset dumps write elements in sorted(v,
key=marshal.dumps) order.
Assisted-by: Grok:grok-4.6
* Add classmethod_descriptor and ABC IS_ABSTRACT flags
Give METH_CLASS methods a distinct classmethod_descriptor type.
Store Py_TPFLAGS_IS_ABSTRACT from __abstractmethods__ and look
up that attribute only in the type's own dict.
Expose defaultdict.default_factory as a member descriptor.
Inherit bool's unused number slots from int. Mark set and
frozenset __contains__ as METH_COEXIST.
Parse classmethod, staticmethod, object.__new__, and heap type
text signatures. Register interactive source in linecache.
Assisted-by: Grok:grok-4.6
* address review: odict reuse, descr call, new wrapper
Reuse odict node slots and walk the live list in next_after.
Require both | operands to be dicts. Drop the odict iterator
on GC clear. Bind classmethod descriptors through descr_get
and update IS_ABSTRACT under the type lock. Give odict keys
and items sq_contains. Walk tp_new_wrapper past new_wrapper
so HEAPTYPE socket subclasses can call socket.__new__.
Split FreeBSD Bluetooth protocol constants from Linux values.
Assisted-by: Grok:grok-4.6
* Represent chflags bits with bitflagset
Assisted-by: Grok:grok-4.6
* Represent access and mode bits with bitflagset
Assisted-by: Grok:grok-4.6
* Continue unfinished REPL suites as incomplete input
Assisted-by: Grok:grok-4.6
* Add pickle and os.stat inspect signatures
Give _pickle.Pickler the clinic constructor text signature and
accept fix_imports and buffer_callback as positional-or-keyword.
Allow #[pyfunction(text_signature)] and use it so os.stat reports
(path, *, dir_fd=None, follow_symlinks=True). Uncomment import
_pickle and drop the pickle inspect expectedFailures.
Assisted-by: Grok:grok-4.6
* Add Unpickler, dump/load, and lstat signatures
Give _pickle Unpickler, dump, dumps, load, and loads clinic
text signatures, and os.lstat (path, *, dir_fd=None).
Assisted-by: Grok:grok-4.6
* Complete OrderedDict with insertion-order links
Move the native OrderedDict into ordered_dict.rs and track order
with a linked list of nodes, keeping mapping-view set operations.
Assisted-by: Grok:grok-4.6
* address CI: stat casts, HCI_DATA_DIR, passing xfails
Compare stat permission bits as Mode so Linux clippy does not
flag a u32-to-u32 cast. Export HCI_DATA_DIR with the Bluetooth
socket option values. Drop expectedFailure from tests that now
pass.
Assisted-by: Grok:grok-4.6
* Fix wasm teardown deadlock and bluetooth constants
Assisted-by: Grok:grok-4.6
* Clear process-wide eval breaker bits in STW test
Assisted-by: Grok:grok-4.6
* Drop exclusive-held panic that tripped wasm clippy
Assisted-by: Grok:grok-4.6
* Fix OrderedDict contains and export Windows BDADDR
Assisted-by: Grok:grok-4.6
* Add cmp_to_key and hash-once LRU cache
_functools.cmp_to_key now returns KeyWrapper. LRU lookups store the
key hash on _lru_list_elem so __hash__ is not called again on hits
or eviction.
Assisted-by: Grok:grok-4.6
* Allow subclass keywords on list, tuple, and float
list.__init__ rejects keywords only when tp_new is still list's.
tuple/float.__new__ reject them only when tp_init is still the base's.
Assisted-by: Grok:grok-4.6
* Fix CI lint, test re-export, and structseq members
Drop the duplicate clear_eval_breaker_for_test re-export.
Format structseq imports. Expose struct sequence fields as
readonly members so assignment raises "readonly attribute".
Assisted-by: Grok:grok-4.6
* Allow subclass keywords on itertools and filter
Positional-only constructors ignore extra keywords when a subclass
has replaced tp_init, matching list/tuple/float.
Assisted-by: Grok:grok-4.6
* Remove text_signature derive parameter
Drop the string override on #[pyfunction] and #[pyclass]. Signatures
are generated from the Rust parameter list only. Restore inspect
expectedFailures that depended on the override.
Assisted-by: Grok:grok-4.6
* Rename set contains_method to __contains__
Keep a borrowed contains helper for slots and C-API. The coexist
pymethod is named __contains__.
Assisted-by: Grok:grok-4.6
* Use MonitoringEvent instead of EVENT_* aliases
Drop the unused MonitoringEvents bitflags and the EVENT_PY_START
style mask constants. Call sites use the enum and .mask().
Assisted-by: Grok:grok-4.6
* Store warnings filters as PyListRef
The list already serializes its elements. Drop the extra mutex around
the cached list pointer.
Assisted-by: Grok:grok-4.6
* Re-export clear_eval_breaker_for_test after rebase
Keep the STW test helper visible without bringing back stop_bit_set.
Assisted-by: Grok:grok-4.6
* Fix groupby reentrancy and islice arguments
Give _grouper its own tgtkey and take currvalue after the key
comparison. Accept __index__ on islice bounds, reject step 0, and
drain the source up to stop.
Assisted-by: Grok:grok-4.6
* SETREF warnings filters, onceregistry, and defaultaction
Keep the last list, dict, or str after the module attributes are
deleted by swapping the interpreter cache pointer. Do not store a
None fallback for _warnings_context.
Assisted-by: Grok:grok-4.6
* Iterate OrderedDict inner dict via next_entry
&PyDict is not an iterator after the borrowed-ref signature change.
Assisted-by: Grok:grok-4.6
* Remove expectedFailure from testBluetoothConstants
Linux now exports BTPROTO_HCI and the rest of the set.
Assisted-by: Grok:grok-4.6
* Borrow get_filter arguments as PyObject
Match the warn_explicit call site that passes borrowed
handles after the internal-helper borrow change.
Assisted-by: Grok:grok-4.6
* Fix bool slots and SemHandle safety docs
Leave unused bool number slots unset so inspect reports
__add__ on int. Document SemHandle::from_raw safety.
Assisted-by: Grok:grok-4.6
* Keep sendmsg errors and drop duplicate linecache
Replace sendmsg iterable TypeError only. Register REPL
source in linecache once per compiled input.
Assisted-by: Grok:grok-4.6
* Nest REPL parse or-patterns for clippy
Assisted-by: Grok:grok-4.6
* Mark pydoc os.stat signature test expectedFailure
Assisted-by: Grok:grok-4.6
---------
Co-authored-by: Lee Dogeon <dev.moreal@gmail.com>
* _imp: read get_frozen_object's data as a whole marshal value
The data argument went through deserialize_code(), which reads a code body
without the type byte in front of it, so nothing marshal.dumps() produces was
accepted. Read it with marshal.loads() and require a code object back.
Assisted-by: Claude
* _imp: bind find_frozen's arguments with FromArgs
The arity check was done by hand on a FuncArgs. Take the arguments through a
FromArgs struct instead, which makes withdata keyword-only, and fill in the
data it asks for: the frozen encoding is not marshal, so the code is
re-serialized into what get_frozen_object() reads back.
Assisted-by: Claude
* itertools: give tee's shared buffer a Python type
The buffer was a PyRc<PyItertoolsTeeData>, which is not a Python object, so the
collector could not walk into it and any cycle running through a tee was
uncollectable. Make it the _tee_dataobject type with a traverse, held by
PyRef, and split the rest along the same lines: tee() is a function, _tee is
the iterator type it builds, and _tee takes a single iterable rather than
returning a tuple from __new__. _tee is weak-referenceable, tee() rejects a
negative n with ValueError and reserves its tuple fallibly.
test_itertools.test_tee passes now; its expectedFailure marker is removed.
Assisted-by: Claude
* contextvars: hold the shared context state under locks
The variable map was a RefCell, the enter flag, the context index, the token's
used flag and the variable hash were Cells, and each carried an unsafe impl
Sync. A Context or ContextVar shared between threads overlapped their borrows
and panicked. The map and the per-variable cache are now PyMutex, the flags and
the index are atomics, entering a context is a compare_exchange, and the three
unsafe impl Sync are gone.
The cache also stopped being read through AtomicCell::as_ptr, which raced a
concurrent store on a value holding a PyObjectRef.
Values displaced from the map or the cache are dropped after the lock is
released: __del__ can come straight back into the same context, and the locks
are not reentrant.
Assisted-by: Claude
* generator: read the frame state under the running claim
send(), send_none(), throw() and close() read `closed` and `frame.lasti()`
before `running` was compare_exchanged, so the frame they went on to resume
could be one another thread had already advanced. A resume that decided from
`lasti() == 0` that the generator had not started pushes no value onto the
value stack, and the code after the yield pops one, which underflows the stack.
The compare_exchange now hands back a guard, taken before those reads and
released after maybe_close(), so the generator is retired while it is still
claimed.
Assisted-by: Claude
* itertools: claim a tee's position and its buffer as one step
`_tee::next` read `index` and moved it on afterwards, and
`_tee_dataobject::get_item` released `running` before the value it fetched
from the source was cached.
Two callers on one `_tee` then read the same index, hand out the same value
twice and advance past a value that was never cached, which leaves `index`
past `values.len()` and indexes the buffer out of bounds. Two callers at the
same index on separate tees each fetch a value from the source, and one of the
two is dropped without reaching a caller.
Both claims now cover the read and the update.
Assisted-by: Claude
* _asyncio: require InvalidStateError to be a type
new_invalid_state_error() called whatever `asyncio.exceptions.InvalidStateError`
names and unwrapped the downcast of the result, so a future asked for a result
it does not have panicked once that attribute was rebound to something that is
not an exception:
asyncio.InvalidStateError = lambda *args: 42
_asyncio.Future(loop=object()).result()
The type is looked up the way get_cancelled_error_type() looks its own up, and
raised with new_exception_msg; a lookup that does not produce an exception type
falls back to RuntimeError, as the other arms already did.
Assisted-by: Claude
Store the `dropwhile` predicate as a Python object and call it while
advancing the iterator. This defers callable validation until the predicate
is first needed, matching CPython for empty input while preserving exception
propagation during iteration.
Remove the now-passing `test_dropwhile` expected-failure marker.
Assisted-by: Codex:gpt-5.6-sol
* map: raise TypeError when called with no iterables
Assisted-by: Claude Code:claude-fable-5
* add test for map with no iterables
Assisted-by: Claude Code:claude-fable-5
* removed expectedFailures
* removed test for map constructed with no iterables - covered by existing in test_itertools
* Downgraded skips in tests
* Fixed failing tests
* Fixed test_ftplib + test_socket + test_ssl + test_threaded_import failures
* Removed comments about which tests are run in which environment
* Addressed PR comments
* Annotated skips on failing tests
* Removed unneeded tests
* Removed unneeded sys import from test_ftplib
* Added annotation to test_ftplib
* Readded skipIf to test_cleanup_with_symlink_modes with a more general ENV_POLLUTING_TESTS_WINDOWS
* Addressed PR comments
* Made changes to minimize diff in PR
* Apply suggestion from @youknowone
---------
Co-authored-by: Jeong, YunWon <69878+youknowone@users.noreply.github.com>
