Add `pathlib.Path.scandir()` as a trivial wrapper of `os.scandir()`. This
will be used to implement several `PathBase` methods more efficiently,
including methods that provide `Path.copy()`.
Alperen Keleş [Thu, 31 Oct 2024 21:44:34 +0000 (17:44 -0400)]
gh-126256: Update time.rst to use the same clock as instead of the same clock than (#126257)
Update time.rst to use `the same clock as` instead of `the same clock than`
The time documentation uses the same clock than time.monotonic instead of the same clock as time.monotonic, which is grammatically false. This PR fixes changes two instances of `the same clock than` to `the same clock as`.
Johan Förberg [Wed, 30 Oct 2024 22:08:30 +0000 (23:08 +0100)]
gh-121267: Improve performance of tarfile (#121267) (#121269)
Tarfile in the default write mode spends much of its time resolving UIDs
into usernames and GIDs into group names. By caching these mappings, a
significant speedup can be achieved.
In my simple benchmark[1], this extra caching speeds up tarfile by 8x.
Serhiy Storchaka [Wed, 30 Oct 2024 16:14:27 +0000 (18:14 +0200)]
gh-126068: Fix exceptions in the argparse module (GH-126069)
* Only error messages for ArgumentError and ArgumentTypeError are now
translated.
* ArgumentError is now only used for command line errors, not for logical
errors in the program.
* TypeError is now raised instead of ValueError for some logical errors.
Serhiy Storchaka [Wed, 30 Oct 2024 08:50:12 +0000 (10:50 +0200)]
gh-126071: Improve formatting of the argparse documentation (GH-126073)
* Use appropriate roles for ArgumentParser, Action, etc.
* Remove superfluous repeated links.
* Explicitly document signatures and add index entries for some methods
and classes.
* Make it more clear that some parameters are keyword-only.
* Fix some minor errors.
bpo-41793: Fix an inaccuracy about reflected methods in datamodel docs (GH-22257)
* Qualifying that the right operand's type must be a *strict* subclass for the reflected method to take precedence avoids an edge case / counter-example when the types are actually equal.
Hood Chatham [Tue, 29 Oct 2024 21:45:49 +0000 (22:45 +0100)]
gh-124932: Distinguish build prefix from host prefix in cross builds (#124933)
In Emscripten and other cross builds, the build file system and the host file
system look different. For instance, we may want to install into
`cross-build/$TARGET/lib`, and then mount that as `/lib` in the host file
system. This change adds a distinction between:
* `prefix` -- the path in the build file system where we want to install the files
* `host_prefix` -- the path in the host file system where getpath.c will look for the files
And similarly for `exec_prefix` and `host_exec_prefix`. At present, this is only
used for Emscripten.
Barney Gale [Tue, 29 Oct 2024 20:44:57 +0000 (20:44 +0000)]
GH-125866: Improve tests for `pathname2url()` and `url2pathname()` (#125993)
Merge `URL2PathNameTests` and `PathName2URLTests` test cases (which test
only the Windows-specific implementations from `nturl2path`) into the main
`Pathname_Tests` test case for these functions.
Copy/port some test cases for `pathlib.Path.as_uri()` and `from_uri()`.
sobolevn [Tue, 29 Oct 2024 15:42:48 +0000 (18:42 +0300)]
gh-126105: Fix crash in `ast` module, when `._fields` is deleted (#126115)
Previously, if the `ast.AST._fields` attribute was deleted, attempts to create a new `as`t node would crash due to the assumption that `_fields` always had a non-NULL value. Now it has been fixed by adding an extra check to ensure that `_fields` does not have a NULL value (this can happen when you manually remove `_fields` attribute).
These consist of a number of short snippets that help identify scaling
bottlenecks in the free threaded interpreter.
The current bottlenecks are in calling functions in benchmarks that call
functions (due to `LOAD_ATTR` not yet using deferred reference counting)
and when accessing thread-local data.
Kumar Aditya [Fri, 25 Oct 2024 12:49:30 +0000 (18:19 +0530)]
GH-125789: fix `fut._callbacks` to always return a copy of callbacks (#125922)
Fix `asyncio.Future._callbacks` to always return a copy of the internal list of callbacks to avoid mutation from user code affecting the internal state.
Sam Gross [Thu, 24 Oct 2024 22:12:51 +0000 (18:12 -0400)]
gh-125245: Fix race condition when importing `collections.abc` (#125415)
If multiple threads concurrently imported `collections.abc`, some of the
threads might incorrectly see the "shim" `Lib/collections/abc.py` module
instead of the correct `Lib/_collections_abc.py` module. This affected
both the free threading build and the default GIL-enabled build.
Sam Gross [Thu, 24 Oct 2024 22:09:59 +0000 (18:09 -0400)]
gh-125900: Clean-up logic around immortalization in free-threading (#125901)
* Remove `@suppress_immortalization` decorator
* Make suppression flag per-thread instead of per-interpreter
* Suppress immortalization in `eval()` to avoid refleaks in three tests
(test_datetime.test_roundtrip, test_logging.test_config8_ok, and
test_random.test_after_fork).
* frozenset() is constant, but not a singleton. When run multiple times,
the test could fail due to constant interning.
Sam Gross [Thu, 24 Oct 2024 16:44:38 +0000 (12:44 -0400)]
gh-124218: Avoid refcount contention on builtins module (GH-125847)
This replaces `_PyEval_BuiltinsFromGlobals` with
`_PyDict_LoadBuiltinsFromGlobals`, which returns a new reference
instead of a borrowed reference. Internally, the new function uses
per-thread reference counting when possible to avoid contention on the
refcount fields on the builtins module.
Sam Gross [Thu, 24 Oct 2024 16:03:50 +0000 (12:03 -0400)]
gh-125842: Fix `sys.exit(0xffff_ffff)` on Windows (#125896)
On Windows, `long` is a signed 32-bit integer so it can't represent
`0xffff_ffff` without overflow. Windows exit codes are unsigned 32-bit
integers, so if a child process exits with `-1`, it will be represented
as `0xffff_ffff`.
Also fix a number of other possible cases where `_Py_HandleSystemExit`
could return with an exception set, leading to a `SystemError` (or
fatal error in debug builds) later on during shutdown.
Sam Gross [Thu, 24 Oct 2024 13:33:11 +0000 (09:33 -0400)]
gh-125859: Fix crash when `gc.get_objects` is called during GC (#125882)
This fixes a crash when `gc.get_objects()` or `gc.get_referrers()` is
called during a GC in the free threading build.
Switch to `_PyObjectStack` to avoid corrupting the `struct worklist`
linked list maintained by the GC. Also, don't return objects that are frozen
(`gc.freeze()`) or in the process of being collected to more closely match
the behavior of the default build.
projects / thirdparty / Python / cpython.git / log
