Add `glob.translate()` function that converts a pathname with shell wildcards to a regular expression. The regular expression is used by pathlib to implement `match()` and `glob()`.
This function differs from `fnmatch.translate()` in that wildcards do not match path separators by default, and that a `*` pattern segment matches precisely one path segment. When *recursive* is set to true, `**` pattern segments match any number of path segments, and `**` cannot appear outside its own segment.
In pathlib, this change speeds up directory walking (because `_make_child_relpath()` does less work), makes path objects smaller (they don't need a `_lines` slot), and removes the need for some gnarly code.
Co-authored-by: Jason R. Coombs <jaraco@jaraco.com>
Co-authored-by: Adam Turner <9087854+AA-Turner@users.noreply.github.com>
* Split list_extend() into two sub-functions: list_extend_fast() and
list_extend_iter().
* list_inplace_concat() no longer has to call Py_DECREF() on the
list_extend() result, since list_extend() now returns an int.
gh-111944: Clarify where assignment expressions require ()s
Augment the list of places where parentheses are
required around assignnment statements. In particular,
'a := 0' and 'a = b := 1' are syntax errors.
In PyObject_GC_Del, in Py_DEBUG mode, when warning about GC objects that
were not properly untracked before starting destruction, take care to
untrack the object _before_ warning, to avoid triggering a GC run and
causing the problem the code tries to warn about. Also make sure to save and
restore any pending exceptions, which the warning would otherwise clobber or
trigger an assertion error on.
Fix undefined behaviour in datetime.time.fromisoformat() when parsing a string without a timezone. 'tzoffset' is not assigned to by parse_isoformat_time if it returns 0, but time_fromisoformat then passes tzoffset to another function, which is undefined behaviour (even if the function in question does not use the value).
New methods to access mailbox.Maildir message info and flags:
get_info, set_info, get_flags, set_flags, add_flag, remove_flag.
These methods speed up accessing a message's info and/or flags and are
useful when it is not necessary to access the message's contents,
as when iterating over a Maildir to find messages with specific flags.
---------
* Add more str type checking
* modernize to f-strings instead of %
Co-authored-by: Gregory P. Smith <greg@krypto.org>
Make `multiprocessing.managers.{DictProxy,ListProxy}` generic for type annotation use. `ListProxy[str]` for example.
Co-authored-by: Alex Waygood <Alex.Waygood@Gmail.com>
Co-authored-by: Gregory P. Smith <greg@krypto.org>
Now all results from worker processes are aggregated and
displayed together as a summary at the end of a regrtest run.
The traditional trace is left in place for use with sequential
in-process test runs but now raises a warning that those
numbers are not precise.
`-T -j` requires `--with-pydebug` as it relies on `-Xpresite=`.
This adds a macro `Py_CAN_START_THREADS` that corresponds to the Python
function `test.support.threading_helper.can_start_thread()`. WASI and
some Emscripten builds do not have a working pthread implementation.
This macro is used to guard the critical sections C API tests that
require a working threads implementation.
The random module now imports the _sha2 module lazily in the
Random.seed() method for str, bytes and bytearray seeds. It also
imports lazily the warnings module in the _randbelow() method for
classes without getrandbits(). Lazy import makes Python startup
faster and reduces the number of imported modules at startup.
In PGO mode, this function caused a compiler error in MSVC.
It turns out that optimizing for space only save the day, and is even faster.
However, without PGO, this is neither necessary nor slower.
In most cases, doctest is not needed. So don't always import it at
startup. The change reduces the number of modules already
imported when a test is run.
Drop posix.fallocate() under WASI.
The underlying POSIX function, posix_fallocate(), was found to vary too
much between implementations to remain in WASI. As such, while it was
available in WASI preview1, it's been dropped in preview2.
Critical sections are helpers to replace the global interpreter lock
with finer grained locking. They provide similar guarantees to the GIL
and avoid the deadlock risk that plain locking involves. Critical
sections are implicitly ended whenever the GIL would be released. They
are resumed when the GIL would be acquired. Nested critical sections
behave as if the sections were interleaved.
Barney Gale
Victor Stinner
AN Long
Davide Rizzo
Markus Mohrhard
Tian Gao
Sergey B Kirpichev
Hugo van Kemenade
Serhiy Storchaka
Terry Jan Reedy
Irit Katriel
T. Wouters
Stephen Gildea
Sam Gross
Nikita Sobolev
Łukasz Langa
Alex Waygood
Zac Hatfield-Dodds
Nicolas Tessore
Samuel Thibault
Pavel Ovchinnikov
Vinay Sajip
Michael Droettboom
zipperer
Mark Shannon
Donghee Na
Brett Cannon
Jelle Zijlstra