* Add inline values flags and special-method lookup
lookup_maybe_method clears AttributeError from descr_get.
slot_tp_richcompare treats a miss as NotImplemented.
hackcheck rejects object.__setattr__ on types.
Heap types with a managed dict and itemsize 0 get
INLINE_VALUES; _testinternalcapi.has_inline_values
reports the valid bit.
super is a base type; subclass __get__ binds the instance.
__classcell__/__qualname__ may share a name with a slot.
Unset member access uses the type's fully qualified name.
Assisted-by: Grok:grok-4.6
* Call custom mro and descr_get for type.__new__
type.mro() computes C3 from the current bases.
A metaclass other than type supplies the MRO via mro().
super() compares obj.__class__ to the instance type.
slot_tp_new looks up __new__ through descr_get.
is_subtype walks the stored MRO without an identity shortcut.
__slots__ names are sorted so __class__ assignment matches.
Assisted-by: Grok:grok-4.6
* Expose _testinternalcapi recursion and rare events
get_recursion_depth feeds test.support.infinite_recursion.
SPECIALIZATION_* and SHARED_KEYS_MAX_SIZE match the
adaptive counters. Rare-event hooks increment on
__class__/__bases__/function/builtins writes.
Assisted-by: Grok:grok-4.6
* Add remaining _testinternalcapi code and locale APIs
Expose get_co_localskinds, get_code_var_counts, verify_stateless_code,
code_returns_only_none, normalize_path, EncodeLocaleEx, DecodeLocaleEx,
and run_in_subinterp_with_config. Mark unimplemented compiler IR and
specialization monitoring tests as expectedFailure.
Assisted-by: Grok:grok-4.6
* Fix lint for _testinternalcapi identifiers
Add CPython identifier spellings to the cspell dictionary and apply
the rustfmt signature that CI rewrote.
Assisted-by: Grok:grok-4.6
* Expand _testinternalcapi with remaining test APIs
Add constants, compiler_cleandoc, dict_getitem_knownhash, time
helpers, interpreter/frame accessors, configs, static types, a
persistent hamt map, and GC/size counters used by the test suite.
Assisted-by: Grok:grok-4.6
* Expose compiler IR APIs in _testinternalcapi
Add InstructionSequence and compiler_codegen, optimize_cfg, and
assemble_code_object. Drop expectedFailure marks on tests that pass.
Assisted-by: Grok:grok-4.6
* Match optimize_cfg consts and addop locations
Write optimized consts back into the caller's list, mark SETUP_*
pseudo-ops as having an argument, and store addop locations in
instruction-sequence field order. Drop expectedFailure marks on
tests that pass.
Assisted-by: Grok:grok-4.6
* Fix hamt API, SETUP_* HAS_ARG, and FOR_ITER events
Honor explicit pseudo flags when generating opcode metadata so
SETUP_FINALLY/CLEANUP/WITH keep HAS_ARG after regeneration.
Complete the _testinternalcapi hamt mapping: identity on
set/delete, richcompare, weakrefs, subscript, contains, and
length-bearing iterators.
Fire RAISE/STOP_ITERATION for FOR_ITER StopIteration, and skip
both END_FOR and POP_ITER for the exhausted-branch destination.
Assisted-by: Grok:grok-4.6
* Skip FOR_ITER RAISE for sequence iterators
List/range/tuple exhaustion matches FOR_ITER_LIST/RANGE/TUPLE and
must not emit a monitoring RAISE. That event stopped pdb's
monitoring backend on for-over-list with Internal StopIteration.
Assisted-by: Grok:grok-4.6
* Fix generator FOR_ITER events and review issues
Restore settrace StopIteration for generator for-loops so
test_bdb next/return cases pass, while sequence iterators still
skip RAISE.
Honor review notes: addop oparg bounds, linetable locations,
AST instance errors, MRO subclass lock, builtin-dict notify,
direct-base layout flags, and leftover _testinternalcapi args.
Assisted-by: Grok:grok-4.6
* gc: add CollectResult, stats fields, get_referrers, and fix count reset
- Add CollectResult struct with collected/uncollectable/candidates/duration
- Add candidates and duration fields to GcStats and gc.get_stats()
- Pass CollectResult to gc.callbacks info dict
- Reset generation counts for all collected generations (0..=N)
- Return 0 for third value in gc.get_threshold() (3.13+)
- Implement gc.get_referrers() by scanning all tracked objects
- Add DEBUG_COLLECTABLE output for collectable objects
- Update test_gc.py to expect candidates/duration in stats
* Update test_gc from v3.14.3
* Update test_gc.py from CPython v3.15.0a5
Taken from v3.15 (not v3.14.3) because get_stats() candidates/duration
fields were added in 3.13+ and the corresponding test assertions only
exist in 3.15.
* Fix gc_state build on wasm32: skip Instant timing
* Add candidates/duration to gc callback info, mark v3.15 test failures
* Fix gc.get_referrers to exclude executing frames, fix Future cancelled exc leak
- get_referrers: skip frame objects on the execution stack, since
they are not GC-tracked in CPython (_PyInterpreterFrame)
- _asyncio Future/Task make_cancelled_error_impl: clear the stored
cancelled exception after returning it, matching the Python
_make_cancelled_error behavior
* Fix gc.get_threshold to return actual gen2 threshold value
* Fix inconsistent GC count reset in early-return paths
Use the same reset_end formula in unreachable-empty early returns
as in the main collection path and collecting-empty path.
* Accept keyword arguments in socket.__init__
Use a FromArgs struct instead of a positional-only tuple so that
family, type, proto, and fileno can be passed as keyword arguments.
* Disable comp_inlined in symbol table to match compiler
The compiler does not yet implement PEP 709 inlined comprehensions
(is_inlined_comprehension_context always returns false), but the
symbol table was marking comprehensions as inlined. This mismatch
could cause comprehension-local symbols to be merged into the parent
scope while the compiler still looks them up in a separate scope.
---------
Co-authored-by: CPython Developers <>
Jeong, YunWon