* Target Python 3.15 using the final upstream reference
Update active version and comparison configuration to Python 3.15.0. Preserve the alpha implementation status, actual bytecode format, and existing libraries pending separate migration. Align generated library-upgrade workflow pins without changing permissions or actions.
Assisted-by: OpenAI Codex:model identifier unavailable
* Adapt essential snippet contracts to Python 3.15 final
Preserve existing coverage while following verified final behavior for script metadata, builtin signatures and loading, AST fixture construction, memoryview diagnostics, mmap search bounds, and struct format errors. The unchanged final comparator exposes the earlier expectations; focused native baseline failures establish the required implementation changes.
Assisted-by: OpenAI Codex:model identifier unavailable
* Keep final-reference regression paths and remove expired sysconfig argument
Preserve reverse multiplication syntax and native exact overflow diagnostics. Accept the two source-proven CPython 3.15 specialization messages only in affected reverse str/bytes/tuple cases. Use an actually out-of-range Windows datetime errno fixture. Remove the sysconfig check_home argument at its existing canonical 3.15 removal test boundary.
Assisted-by: OpenAI Codex:model identifier unavailable
* Keep README wording unchanged in Python 3.15 transition
Assisted-by: OpenAI Codex:model identifier unavailable
* Match Python 3.15 repetition specialization and keep universal tests
Use exact sequence-type guards and preserve generic fallback diagnostics. Validate both cold and warmed expressions without implementation-specific assertions. Reject stale CPython source checkouts and cross-version library caches.
Assisted-by: OpenAI Codex:model identifier unavailable
* Limit in-place specialization additions to exact sequence repetition
Assisted-by: OpenAI Codex:model identifier unavailable
* Keep subclass regression scoped to repetition dispatch
Assisted-by: OpenAI Codex:model identifier unavailable
* Provision final CPython 3.15 with pinned uv builds
Assisted-by: OpenAI Codex:model identifier unavailable
* Enforce Python 3.15 AST constructor requirements
Reject retired missing-field and arbitrary-keyword forms while preserving defaults and explicit placeholders. Sync only matching final CPython constructor test hunks.
Assisted-by: OpenAI Codex:model identifier unavailable
* Keep seeded Python ahead of its Windows DLL directory
Assisted-by: OpenAI Codex:model identifier unavailable
* Keep opcode metadata tied to the implemented bytecode format
The interpreter target and reference tests use Python 3.15.0, but the current Rust opcode enum retains the 3.14 bytecode format. Generate metadata from its matching source rather than importing unsupported instruction families.
Assisted-by: OpenAI Codex:model identifier unavailable
* Align CSV, logarithm and decimal formatting with Python 3.15
Propagate dialect lookup errors except AttributeError, retry integer logarithms after float overflow, and update the decimal conversion diagnostic. Exercise the final reference contracts without implementation-specific branches.
Assisted-by: OpenAI Codex:model identifier unavailable
* Bind the logarithm index result before borrowing its integer
Assisted-by: OpenAI Codex:model identifier unavailable
* Align required canonical test expectations with Python 3.15
Take only demonstrated contract changes from CPython v3.15.0, d220409a13b77de7a6c30abe16ea90db01528edc: removed module __cached__, Struct format exception classes, and decimal-format diagnostic. Preserve unrelated tests and expectations.
Assisted-by: OpenAI Codex:model identifier unavailable
* Track pending frozendict pickle support during the 3.15 transition
Keep the two existing frozendict pickle tests running as expected failures until #8951 supplies the builtin. Unexpected success will signal removal of these temporary markers.
Assisted-by: OpenAI Codex:model identifier unavailable
* Support final Python 3.15 Windows negative timestamps
Use FILETIME for pre-epoch conversions and preserve precise Windows timestamp errors.
Assisted-by: OpenAI Codex:model identifier unavailable
* Derive historical Windows timezone offsets from wall time
FILETIME reports historical DST as unknown, so calculate the actual offset rather than selecting standard-time bias.
Assisted-by: OpenAI Codex:model identifier unavailable
* Identify decimal formatting arguments in Python 3.15 errors
Track consumed positional arguments, including star width and precision, and preserve mapping key representations in decimal conversion diagnostics.
Assisted-by: OpenAI Codex:model identifier unavailable
* Reuse mapping format keys for lookup and error context
Assisted-by: OpenAI Codex:model identifier unavailable
* Borrow mapping diagnostic keys as Python objects
Assisted-by: OpenAI Codex:model identifier unavailable
* Avoid empty components in the reference Python library path
Assisted-by: OpenAI Codex:model identifier unavailable
* Isolate RustPython bytecode caches during the 3.15 transition
Assisted-by: OpenAI Codex:model identifier unavailable
* Sync final Windows timestamp test expectations
Import only the final CPython platform-limit guards and mktime roundtrip expectation required by the existing Windows CI suite.
Assisted-by: OpenAI Codex:model identifier unavailable
* Restore official Python setup for 3.15 final
Use the existing pinned setup-python action now that its official catalog supplies CPython 3.15.0. Remove the temporary standalone provisioning action and its sparse-checkout entry while retaining interpreter outputs and requested versions.
Assisted-by: OpenAI Codex:model identifier unavailable
* Align merged runtime contracts with Python 3.15 final
Restrict mappingproxy ordering, use final codec registry normalization, and prefer index conversion before float conversion for sleep. Retain universal Python assertions and import the matching final codec/time canonical test hunks plus the non-ASCII codec-name deprecation warning.
Upstream source: CPython d220409a13b77de7a6c30abe16ea90db01528edc. The existing codec normalization implementation and bytecode contract remain unchanged.
Assisted-by: OpenAI Codex:model identifier unavailable
* Limit Windows launcher version check to its interpreter
Exclude only the CPython py.exe version-identity case from RustPython CI. The installed launcher reports its own final version, while RustPython correctly remains alpha. Preserve the other 45 launcher cases and all RustPython version assertions without modifying Lib.
Assisted-by: OpenAI Codex:model identifier unavailable
---------
Co-authored-by: Jeong, YunWon <69878+youknowone@users.noreply.github.com>
* Show stdin traceback lines; omit StopIteration None args
Register interactive <stdin> source in linecache so REPL
tracebacks include the source line and caret. Build
StopIteration with empty args when the value is None, and
wrap monitoring STOP_ITERATION the same way.
Unskip REPL stderr flush tests and pdb Flaky doctests.
Assisted-by: Grok:4.6
* Take &Py<PyCode> in register_code_in_linecache
Assisted-by: Grok:4.6
* Count Unknown closing braces in tokenize EOF check
`$` inside an f-string interpolation is TokenKind::Unknown, so
the matching `}` is Unknown rather than Rbrace and generate_tokens
raised TokenError. Also convert &Py<PyCode> to PyObjectRef
explicitly when registering linecache.
Assisted-by: Grok:4.6
* Unskip test_pdb.PdbTestCase.test_zipimport
The test now passes, so the expectedFailure is an unexpected
success under CI.
Assisted-by: Grok:4.6
* Park STW threads; poll sockets after timeout deadline
Check per-thread stop_requested in eval_breaker_tripped so
workers still park when another interpreter clears STOP_BIT.
Start socket timeout after the fd snapshot, and poll once with
timeout 0 when the deadline has already passed, so a readable
socket is not dropped as timed out.
Assisted-by: Grok:4.6
* Unskip passing flaky CPython tests
Remove RUSTPYTHON skip overlays after Linux release repeats passed
for enum, threading, logging, subprocess, socket, int, re, strtod,
and regrtest cases.
Assisted-by: Grok:4.6
* Fix fork-child SIGSEGV and yield-from throw args
Forget JoinHandle of threads that did not survive fork instead
of dropping them. Zero-reinit the import lock and condvars in
the child rather than unlock/notify. Resume the world if
os.fork() fails.
Call a yield-from subiterator throw() without None fillers so
a 1-arg throw stays 1-arg.
Drop the stale Windows expectedFailure on logging queue config
and unskip test_reinit_tls_after_fork plus the asyncio
local_addr family test.
Assisted-by: Grok:4.6
* Restore import lock depth after fork; add WASI clock info
Zeroing IMP_LOCK in the child discarded its recursion count, so
imp.release_lock() raised and test_fork1 exited 1. Re-acquire the
saved depth, then drop the extra pre-fork hold.
Expose time.get_clock_info on WASI via clock_getres so test_int
Stopwatch can run.
Unskip lock_tests test_acquire_contended and test_thread_leak.
Assisted-by: Grok:4.6
* Honor chmod follow_symlinks=False via fchmodat
Linux chmod followed the symlink, so dangling links raised
FileNotFoundError instead of NotImplementedError. Use fchmodat
with AT_SYMLINK_NOFOLLOW and map ENOTSUP to NotImplementedError.
Unskip httpservers truncated Content-Length (CPython already
skips as root) and tempfile symlink-mode cleanup on Linux.
Assisted-by: Grok:4.6
* Unskip httplib local bad-hostname HTTPS test
The skip was leftover. With default ssl-rustls the test passes
under -W error on Linux.
Assisted-by: Grok:4.6
* Fix list cmp deadlock, wasm digit overflow, REPL prompt
Do not hold list/deque locks across item comparison callbacks.
Compute int-to-str digit bounds in u64 so the check cannot wrap
on wasm32. Snapshot set contents when list.extend copies a set.
For a non-TTY stdin, write the REPL prompt to stderr and read
lines from stdin. Flush stdout/stderr after each interactive
command. Set sys.ps1/ps2 to ">>> " and "... ".
Unskip list mutation compares, asyncio all_tasks race, importlib
deadlock/parallel/circular-import tests, and REPL stdout flush.
Assisted-by: Grok:4.6
* Avoid unnecessary u64 cast in int-to-str digit check
bits() is already u64, so `bits as u64` fails clippy
unnecessary_cast under -Dwarnings.
Assisted-by: Grok:4.6
* Fix -m argv[0] and file SyntaxError display
Set sys.argv[0] to -m for module execution. Convert an escalated
invalid-escape SyntaxWarning into a SyntaxError that spans just
the `\X` pair. Report null bytes in source files with filename,
lineno, and the truncated line.
Enable the four corresponding test_cmd_line_script cases.
Assisted-by: Grok:4.6
* Pass SyntaxError text when escalating escape warnings
Keep the warning and SyntaxError messages as separate strings at
the invalid-escape site. CompileWarningError carries an optional
replacement instead of rewriting the warning text later.
Assisted-by: Grok:4.6
* Remove expectedFailure from bytes invalid-escape test
The invalid-escape SyntaxError path now satisfies
test_eval_bytes_invalid_escape.
Assisted-by: Grok:4.6
* Align contextvars, CLI startup, and stat validation with CPython
Validate Context and ContextVar arguments and mapping keys, hash names through the Python protocol, and preserve string contents without invoking __str__. Set the main module loader for command and stdin execution, report missing scripts with exit status 2, and reject file descriptors combined with follow_symlinks=False.
Enable the nine corresponding stdlib regression tests.
Assisted-by: Codex:gpt-6
* Move set_main_builtin_importer off the compiler feature
Define the method in vm_new.rs so builds without rustpython-compiler,
such as example_projects/barebone, can compile. Also set BuiltinImporter
on an existing __main__ when its loader is missing or None.
Assisted-by: Grok:4.6
* Fix /dev/fd, rlimit, spawn scheduler, and context cache
Honor PYTHONEXECUTABLE when computing sys.executable.
Rewind the file offset after a pyc magic probe.
Stop masking rlimit values with RLIM_INFINITY.
Print the pyrepl-unavailable warning before the rustyline shell.
Parse posix_spawn scheduler and apply it where the host supports it.
Update ContextVar cache fields under one lock.
Remove expectedFailure and skip markers for tests that now pass.
Assisted-by: Grok:4.6
* address review: check rlim_t overflow on convert
Replace the u64-to-rlim_t as-cast in py2rlim_limit with
a checked try_from, matching py2rlim.
Assisted-by: Grok:4.6
* Add _interpreters and _interpchannels modules
Apply the patch baseline for the low-level subinterpreter modules:
- crates/vm/src/stdlib/_interpreters.rs: create/destroy/list_all/get_main/
get_current/is_running/exec/call/run_string/run_func/set___main___attrs/
is_shareable/whence and the Interpreter*Error exceptions
- crates/vm/src/stdlib/_interpchannels.rs: channel create/destroy/send/recv/
list_all/list_interpreters/release/close and the Channel*Error exceptions
- crates/vm/src/vm/crossinterp.rs: cross-interpreter data protocol
- crates/vm/src/vm/{interpreter,mod,runtime,vm_new}.rs: interpreter registry
and lifecycle plumbing the modules need
- Lib/concurrent/interpreters/: high-level PEP 734 package
Assisted-by: Claude:claude-opus-5
* Correct _interpreters and _interpchannels against CPython 3.14
Argument matching:
- Add `function::ArgSpec`, a `PyArg_ParseTupleAndKeywords` equivalent that
applies the `|`, `$` and `:` markers of a format string to a `kwlist`, and
route every module function of both modules through it. This enforces
keyword-only parameters, rejects unexpected keywords, accepts keyword forms
that were previously positional-only (`whence(id=)`, `get_config(id=)`,
`set___main___attrs(id=, updates=)`, `capture_exception(exc=)`,
`_register_end_types(send=, recv=)`), and reproduces the arity messages.
- `O!` slots (`shared`, `updates`, `call`'s `args`/`kwargs`) now reject None,
and `_PyArg_BadArgument` renders None as "None" rather than "NoneType".
- `new_config` takes at most one positional `str`; `list_all` of
`_interpchannels` is argument-less.
- Convert arguments in `kwlist` order, so an argument's own error is raised
ahead of the checks that follow it.
_interpreters:
- Add the `CrossInterpreterBufferView` type and build the received memoryview
on it, keeping the sending interpreter's exporter out of the destination.
- Build `excinfo.errdisplay` from `traceback.TracebackException`.
Feature flags:
- `os.fork` checks finalization before `allow_fork`, matching `os_fork_impl`.
- `_thread.start_new_thread` and `start_joinable_thread` reject an interpreter
without `allow_threads`.
Lib/concurrent/interpreters/_crossinterp.py: restore the stripped docstrings
and comments.
Assisted-by: Claude:claude-opus-5
* Correct the stateless checks and error shapes of _interpreters against CPython 3.14
verify_stateless_function follows _PyFunction_VerifyStateless: it rejects
non-dict builtins, a non-empty __defaults__, __kwdefaults__ or __closure__,
and code whose LOAD_GLOBAL names are held by the function's globals or
absent from its builtins.
code_returns_only_none follows _PyCode_ReturnsOnlyNone: generator,
coroutine and async-generator code is rejected up front, the instruction
walk skips inline caches and maps specialized and instrumented opcodes
back, and the LOAD_CONST preceding each RETURN_VALUE is compared against
the index of None in co_consts.
ExcInfo::capture keeps an empty exception message instead of dropping it,
and builds `formatted` as `module.qualname: msg`, leaving out the builtins
and __main__ modules.
_interpreters.call packs the callable through _PyFunction_GetXIData before
pickle and re-raises the stateless-check failure when both fail. A func,
args or kwargs that cannot be rebuilt in the target, and a result without
cross-interpreter data, now raise NotShareableError with the snapshot as
the cause rather than being returned as excinfo.
_interpreters.capture_exception() without an argument returns None.
pickle_loads and _PyFunction_GetXIData attach the underlying failure as
__cause__.
channel_send converts the object to cross-interpreter data after the
channel's `closing` check.
ChannelID rich comparison returns the result of comparing its id with the
other number instead of coercing that result to bool.
PyMemoryView_FromObjectAndFlags raises "memoryview: a bytes-like object is
required, not 'X'" for an object that is not a buffer.
Assisted-by: Claude:claude-opus-5
* Correct cross-interpreter data conversion and channel argument parsing
Bound shareable ints by isize, raising OverflowError("try sending as
bytes") outside that range and keeping it as the NotShareableError cause.
Report an unshareable object by its repr, and attach a failing conversion
as __cause__ of the NotShareableError raised for the object it was called
for, so each level of a nested tuple appears in the chain.
Guard each tuple item conversion with with_recursion("while sharing a
tuple").
Gate the memoryview getdata function on `_interpreters` having been
imported, and route channel_send_buffer through a memoryview so it uses
that function and the resolved fallback.
Create the cross-interpreter exception types from the module_exec of
either module that raises them, instead of only `_interpreters`.
parse_cid raises OverflowError("int too big to convert"); int_arg
reproduces the `i` converter's three overflow messages and is also used
while parsing channel_send arguments.
Add BASETYPE to _queue.Empty, and gate nt.execv/nt.execve on allow_exec.
Assisted-by: Claude:claude-opus-5
* Correct interpreter ID parsing and the channel_send defaults lookup
_PyInterpreterState_ObjectToID accepts any object with __index__, raises
OverflowError("int too big to convert") outside the int64 range, and
reports a negative ID with the repr of the original object.
channelsmod_send reads the channel's default unboundop and fallback only
when one of the two arguments is negative, so an explicit pair is
validated before the channel is looked up.
Assisted-by: Claude:claude-opus-5
* Add the _interpqueues module and concurrent.interpreters._queues
_interpqueues holds a process-wide queue table and exposes create,
destroy, list_all, put, get, bind, release, get_maxsize,
get_queue_defaults, is_full, get_count and _register_heap_types, raising
QueueError and QueueNotFoundError. QueueEmpty and QueueFull, which
subclass queue.Empty and queue.Full, are registered per interpreter by
concurrent.interpreters._queues.
Cross-interpreter data carries a queue as a refcounted queue ID that
binds when the data is captured and releases when it is dropped, and
is_shareable reports a registered Queue as shareable.
Queue and channel items owned by an interpreter are now cleared from
Interpreter::finalize, after module finalization, rather than from
destroy_owned_interpreter, so values sent by an atexit callback also
become unbound.
is_shareable gates memoryview on the same registration flag as the
getdata lookup.
Assisted-by: Claude:claude-opus-5
* Add the high-level concurrent.interpreters API
Interpreter, ExecutionFailed and the queue aliases, copied verbatim from
CPython 3.14.
Assisted-by: Claude:claude-opus-5
* Destroy leftover subinterpreters when the main interpreter finalizes
Interpreter::finalize now runs finalize_subinterpreters between the atexit
handlers and the finalizing flag: when the main interpreter still owns
subinterpreters it emits the RuntimeWarning "remaining subinterpreters;
close them with Interpreter.close()" and then finalizes each of them.
runtime::owned_interpreter_ids lists the runtime-owned interpreters.
Assisted-by: Claude:claude-opus-5
* Absolutize the script path in run_file
_Py_abspath and _PyPathConfig_ComputeSysPath0 arrive as abs_path and
script_sys_path0. run_file hands the absolutized path to get_importer
and to the runner, so __file__ and co_filename no longer stay relative,
and inserts the symlink-resolved script directory as sys.path[0]
instead of the argument's parent.
test_cmd_line_script.test_script_abspath no longer expects a failure.
Assisted-by: Claude:claude-opus-5
* Name types in error messages the way tp_name does
The object, number, sequence and mapping protocols, the
unsupported-operand helpers, and the type-specific messages fed from
them now read PyType::slot_name() where they read PyType::name(),
so a type declared with a module keeps it.
Message texts corrected along the way:
- PySequence_Size, PyMapping_Size, PySequence_GetItem and
PySequence_SetItem/DelItem split their merged wording in two, and
PyObject_SetItem/DelItem say "object".
- PyObject_GenericSetAttr reports a read-only attribute and the
missing __dict__.
- check_class drops the type name it appended.
- __int__ and __index__ drop the class prefix; __float__ keeps it.
- float(), complex(), round(), next(), str subscripting and list
subscripting take their own wording.
- str.join and bytes.join number the item they turn down and name what
they wanted, and report a non-iterable as "can only join an
iterable".
test_class.testObjectAttributeAccessErrorMessages,
string_tests.test_subscript and the test_descrtut doctest no longer
expect a failure.
Assisted-by: Claude:claude-opus-5
* Gate script_code's source compilation on the compiler feature
crossinterp::script_code called vm.compile unconditionally, which only
exists with the rustpython-compiler feature. Builds without it, such as
example_projects/barebone, now raise a TypeError instead of failing to
compile.
Assisted-by: Claude:claude-opus-5
* Skip test_pyinit_function_raises_exception
The test imports _testsinglephase in its body without a decorator
guarding it, and now that _interpreters exists requires_subinterpreters
no longer skips it.
Assisted-by: Claude:claude-opus-5
* Align compiler and AST behavior with CPython
Update the compiler pipeline, AST module support, and related VM compile/eval paths toward CPython 3.14 behavior.
Use upstream Ruff parser crates directly and keep RustPython-specific syntax preflight handling in the compile path.
Refresh opcode metadata, snapshots, and targeted tests for the aligned bytecode and AST behavior.
* fix
* Fix PR 8138 CI failures
* Fix match mapping wildcard scan complexity
* fixes
* Use Ruff runtime AST fields
* Minimize residual patch diff
* refactor error handling
* Remove _ast conversion context wrappers
* Clean up _ast conversion glue and compiler warning escalation
Rename the Node conversion parameter `ctx` to `vm` throughout the _ast
module.
Remove the unused compile_program, compile_program_single,
compile_block_expression, and compile_expression forwarders; compile_top
stays as the entry point.
Stash an escalated compiler SyntaxWarning so a non-SyntaxWarning category
propagates unchanged instead of being rewritten to SyntaxError, matching
PyErr_ExceptionMatches(SyntaxWarning) in compiler_warn. Drop the now-unused
CompileWarningError::into_codegen_error.
Replace the PositionalArguments two-variant enum with a struct holding a
shared range and a PositionalArgumentsKind enum.
Assisted-by: Claude
* Represent compiler flags as a CompilerFlags bitflags
Replace the loose PY_CF_*/CO_* i32 constants in compile_mode with a
CompilerFlags bitflags covering the PyCF_* flags and __future__
CO_FUTURE_* bits. The Python-visible ast.PyCF_* attribute values are
derived from it via bits(); parser input modes stay plain consts.
builtins::compile and the compile_string flag handling test flags
through CompilerFlags::contains instead of raw bit math.
Assisted-by: Claude
* Fix PR 8138 test regressions
* Fix PR 8138 CI failures
* Avoid shell interpolation in Linux deps action
* Fix review findings in compiler/AST changes
- frame.rs: compute the MATCH_CLASS class name lazily so a successful
match no longer takes the type name lock or allocates; the
__match_args__-not-a-tuple branch reuses it instead of recomputing.
- _ast/constant.rs: add the missing leading space to the with_recursion
label ("maximum recursion depth exceeded during compilation").
- sys.set_int_max_str_digits: restore the "maxdigits must be 0 or larger
than {n}" error text.
- codegen: set CO_MAXBLOCKS to 20 in both ir.rs and compile.rs.
- _ast/exception.rs: extract the duplicated excepthandler node guard
into ensure_excepthandler_node.
- codegen: correct the validate_keywords doc comment.
- Drop redundant "CPython" qualifiers from comments added in this branch.
Assisted-by: Claude
* Update codeop from v3.14.3
* Fix traceback, syntax errors, and exception handling
- Improve unclosed bracket detection with "'(' was never closed" message
- Fix IndentationError location to point to end of line
- Implement frame.clear() with proper checks for executing/suspended frames
- Fix exception context chaining for propagated exceptions
- Add traceback.__dir__() and prevent tb_next deletion
- Fix subscript operation source range restoration in compiler
- Change "duplicate parameter" to "duplicate argument" error message
- Refactor duplicate code in asyncgenerator.rs and frame.rs
---------
Co-authored-by: CPython Developers <>
Assisted-by: Codex:gpt-6
