The function__entry and function__return probes stopped working in Python 3.11
when the interpreter was restructured around the new bytecode system. This change
restores these probes by adding DTRACE_FUNCTION_ENTRY() at the start_frame label
in bytecodes.c and DTRACE_FUNCTION_RETURN() in the RETURN_VALUE and YIELD_VALUE
instructions. The helper functions are defined in ceval.c and extract the
filename, function name, and line number from the frame before firing the probe.
This builds on the approach from https://github.com/python/cpython/pull/125019
but avoids modifying the JIT template since the JIT does not currently support
DTrace. The macros are conditionally compiled with WITH_DTRACE and are no-ops
otherwise. The tests have been updated to use modern opcode names (CALL, CALL_KW,
CALL_FUNCTION_EX) and a new bpftrace backend was added for Linux CI alongside
the existing SystemTap tests. Line probe tests were removed since that probe
was never restored after 3.11.
When Levenshtein-based suggestions find no match for an AttributeError
on list, str, or dict, check a static table of common method names from
JavaScript, Java, C#, and Ruby.
For example, [].push() now suggests .append(), "".toUpperCase() suggests
.upper(), and {}.keySet() suggests .keys().
The list.add() case suggests using a set instead of suggesting .append(),
since .add() is a set method and the user may have passed a list where
a set was expected (per discussion with Serhiy Storchaka, Terry Reedy,
and Paul Moore).
Design: flat (type, attr) -> suggestion text table, no runtime
introspection. Only exact builtin types are matched to avoid false
positives on subclasses.
Discussion: https://discuss.python.org/t/106632
Co-authored-by: Matt Van Horn <455140+mvanhorn@users.noreply.github.com>
Co-authored-by: Victor Stinner <vstinner@python.org>
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* empty lines are always ignored instead of separating groups
* the "user-agent" line after a rule starts a new group
* groups matching the same user agent are now merged
* the rule with the longest match wins instead of the first matching rule
* in case of equal matches, the “Allow” rule wins over “Disallow”
* special characters “$” and “*” are now supported in rules
* prefer full match for user agent
* Add Zd/Zf format support to array, memoryview and struct.
* ctypes: Replace F/D/G complex format with Zf/Zd/Zg.
* Modify array, ctypes and struct modules to support format strings
longer than 1 character (such as "Zd").
* Change array.typecodes type from str to tuple.
* Handle non-source modules more gracefully (and consistently)
* Improve handling of frozen modules (which may or may not have source)
* Avoid reporting misleading info when looking up objects via aliases
* Refactor CLI implementation to improve testability
* Add several more test cases
Closes#149010
The _SSLSocket object now remembers if it gets an EOF error. In this
case, read(), sendfile(), write() and do_handshake method calls fail
with SSLEOFError without calling the underlying OpenSSL function.
Co-authored-by: Gregory P. Smith <greg@krypto.org>
Adds `python -m profiling.sampling dump <pid>`, which prints a single
traceback-style snapshot of a running process's Python stack via the
existing `_remote_debugging` unwinder. Supports per-thread status,
source line highlighting, optional bytecode opcodes, and async-aware
task reconstruction (`--async-aware`, default `--async-mode=all`).
Support custom headers in `python -m http.server` and `http.server.SimpleHTTPRequestHandler`.
Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com>
Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>
unittest.TestCase methods assertWarns() and assertWarnsRegex() no longer
swallow warnings that do not match the specified category or regex.
Nested context managers are now supported.
Previously, identical PickleBuffers did not preserve identity.
Also, empty writable PickleBuffer memoized an empty bytearray object
in place of b'' which is a singleton in CPython, so the following
references to b'' were unpickled as an empty bytearray object.
Set ImportError.name on errors from runpy.run_module/run_path
`runpy.run_module()` and `runpy.run_path()` now set the `name` attribute
of the `ImportError` they raise to the requested module name, matching
the behaviour of a regular import statement (previously `name` was
always `None`, which broke introspection).
The `name=` kwarg is gated on `issubclass(error, ImportError)` because
`_get_module_details()` is also used by `_run_module_as_main()` with
a private `_Error` sentinel class. `_Error` does not subclass
ImportError, and `BaseException.__init__` rejects unknown kwargs at
the C level, so passing `name=` unconditionally would break the
`python -m foo` codepath.
This makes it possible to set the gzip header mtime field without
overriding time.time(), making it useful when creating reproducible
archives.
* 📜🤖 Added by blurb_it.
---------
Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>
Co-authored-by: Ethan Furman <ethan@stoneleaf.us>
Co-authored-by: Savannah Ostrowski <savannah@python.org>
Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>
Co-authored-by: Emma Smith <emma@emmatyping.dev>
