__enter__(), __exit__(), __aenter__(), and __aexit__() can now be
arbitrary descriptors, not only normal methods, for consistency with the
"with" and "async with" statements.
Add `gi_state`, `cr_state`, and `ag_state` attributes to generators,
coroutines, and async generators respectively. These attributes return the
current state as a string (e.g., `GEN_RUNNING`, `CORO_SUSPENDED`).
The `inspect.getgeneratorstate()`, `inspect.getcoroutinestate()`, and
`inspect.getasyncgenstate()` functions now return these attributes directly.
This is in preparation for making `gi_frame` thread-safe, which may involve
stop-the-world synchronization. The new state attributes avoid potential
performance cliffs in `inspect.getgeneratorstate()` and similar functions by
not requiring frame access.
Also removes unused `FRAME_COMPLETED` state and renumbers the frame state enum
to start at 0 instead of -1.
- Pass -v to pip, so compiler output is visible
- Move the call ``spam.system(3)`` up so that error handling is tested
right after it's added
- Use `PyUnicode_AsUTF8AndSize` as `PyUnicode_AsUTF8` is not in the
Limited API.
- Add a footnote about embedded NULs.
Treat "+" and "/" like other characters not in the alternative Base64
alphabet when both altchars and ignorechars are specified.
E.g. discard them if they are not in altchars but are in ignorechars,
and set error if they are not in altchars and not in ignorechars.
Only emit warnings if ignorechars is not specified.
The pymalloc huge page support had two problems. First, on
architectures where the default huge page size exceeds the arena
size (e.g. 32 MiB on PPC, 512 MiB on ARM64 with 64 KB base
pages), mmap with MAP_HUGETLB silently allocates a full huge page
even when the requested size is smaller. The subsequent munmap
with the original arena size then fails with EINVAL, permanently
leaking the entire huge page. Second, huge pages were always
attempted when compiled in, with no way to disable them at
runtime. On Linux, if the huge page pool is exhausted, page
faults including copy-on-write faults after fork deliver SIGBUS
and kill the process.
The arena allocator now queries the system huge page size from
/proc/meminfo and skips MAP_HUGETLB when the arena size is not a
multiple of it. Huge pages also now require explicit opt-in at
runtime via the PYTHON_PYMALLOC_HUGEPAGES environment variable,
which is read through PyConfig and respects -E and -I flags.
The config field pymalloc_hugepages is propagated to the runtime
allocators struct so the low-level arena allocator can check it
without calling getenv directly.
In 3.11 ResourceReader, Traversable, & TraversableResources moved from importlib.abc to importlib.resources.abc (commit e712a5b277).
In 3.12 old import locations were deprecated (commit 71848c9609).
In 3.14 backwards-compat support was removed (commit 0751511d24).
Co-authored-by: Brett Cannon <brett@python.org>
Changes in the urllib.parse module:
* Add option missing_as_none in urlparse(), urlsplit() and urldefrag(). If
it is true, represent not defined components as None instead of an
empty string.
* Add option keep_empty in urlunparse() and urlunsplit(). If it is
true, keep empty non-None components in the resulting string.
Although PEP 768 mentions how to disable the mechanism of
remote debugging, it is not documented in the Python docs.
This change adds a note on how to disable remote debugging support
in a Python interpreter to the remote debugging how-to.
Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>
Emit a warning in base64.urlsafe_b64decode() and base64.b64decode() when
the "+" or "/" characters occur in the Base64 data with alternative
alphabet if they are not the part of the alternative alphabet.
It is a DeprecationWarning in the strict mode (will be error) and
a FutureWarning in non-strict mode (will be ignored).
Add a reminder to not rewrap code line to the Menu => Format => Reformat Paragraph entry.
In Editing and Nagivagion, add a new 'Format block' subsection that defines 'paragraph'
to better match what is dependably handled as more or less expected.
In particular, specify equal indents and that the resulting indent equals original indent.
Also mention that selections are expanded to complete lines and how to modify max length.
(Also fix a couple case errors in cross references.)
Add a keyword-only `on_error` parameter to `multiprocessing.set_forkserver_preload()`. This allows the user to have exceptions during optional `forkserver` start method module preloading cause the forkserver subprocess to warn (generally to stderr) or exit with an error (preventing use of the forkserver) instead of being silently ignored.
This _also_ fixes an oversight, errors when preloading a `__main__` module are now treated the similarly. Those would always raise unlike other modules in preload, but that had gone unnoticed as up until bug fix PR GH-135295 in 3.14.1 and 3.13.8, the `__main__` module was never actually preloaded.
Based on original work by Nick Neumann @aggieNick02 in GH-99515.
These had a docs-only deprecation notice since the first version of the docs in this repo. Nowadays we call things “soft deprecated” if there's just a note in the docs.
The deprecated directive needs a version, I went with the first one that had the notice (2.0; it's not in 1.6):
- https://docs.python.org/release/2.0/api/memoryInterface.html
- https://docs.python.org/release/1.6/api/memoryInterface.html
Since PEP 445, they are now direct aliases; there are no (additional) binary compatibility concerns over the preferred names.
