I do think this is clearer, but I wonder if 'nested' should be kept though to get the terminology out there more often. So perhaps it could be something like 'inner (nested) listcomp' or 'nested (inner) listcomp' despite sounding a bit redundant
gh-91611: Use example.com for documentation, not mydomain.com (#91613)
example.com is reserved by the IANA as special-use domain name for documentation
purposes. The domain names are used widely in books, tutorials, sample network
configurations, and generally as examples for the use of domain name.
On the other hand, mydomain.com is real Domain Name Registration service.
bpo-43323: Fix UnicodeEncodeError in the email module (GH-32137)
It was raised if the charset itself contains characters not encodable
in UTF-8 (in particular \udcxx characters representing non-decodable
bytes in the source).
gh-91760: Deprecate group names and numbers which will be invalid in future (GH-91794)
Only sequence of ASCII digits will be accepted as a numerical reference.
The group name in bytes patterns and replacement strings could only
contain ASCII letters and digits and underscore.
gh-91491: Add several typing features to What's New (#92060)
This gets all the major items in #91491. However, I didn't get around to
adding what's new entries for the large clump of changes in the last
bullet point in the issue.
Ethan Smith [Thu, 28 Apr 2022 12:14:19 +0000 (05:14 -0700)]
gh-84461: Add HOSTRUNNER for program to run Python executable (GH-91931)
`HOSTRUNNER` is a program which can be used to run `BUILDPYTHON` for the host platform (for example, `python.js` requires `node`).
Also change depedencies from `build_all` to `all` so that targets which can't build everything (e.g. WASM) can still run `buildbottest` and `pythoninfo`.
Victor Stinner [Thu, 28 Apr 2022 12:02:45 +0000 (14:02 +0200)]
gh-89479: Export _Py_GetSpecializationStats() internal function (#92011)
When Python is built with "./configure --enable-pystats" (if the
Py_STATS macro is defined), the _Py_GetSpecializationStats() function
must be exported, since it's used by the _opcode extension which is
built as a shared library.
gh-87999: Change warning type for numeric literal followed by keyword (GH-91980)
The warning emitted by the Python parser for a numeric literal
immediately followed by keyword has been changed from deprecation
warning to syntax warning.
Fix C++ compiler warnings about "old-style cast"
(g++ -Wold-style-cast) in the Python C API. Use C++
reinterpret_cast<> and static_cast<> casts when the Python C API is
used in C++.
Example of fixed warning:
Include/object.h:107:43: error: use of old-style cast to
‘PyObject*’ {aka ‘struct _object*’} [-Werror=old-style-cast]
#define _PyObject_CAST(op) ((PyObject*)(op))
Add _Py_reinterpret_cast() and _Py_static_cast() macros.
It was initially added to support atomic groups, but that
support was never fully implemented, and CALL was only left
in the compiler, but not interpreter and parser.
ATOMIC_GROUP is now used to support atomic groups.
gh-91916: Fix test_runpy on non-UTF-8 locale (GH-91920)
If use a non-builtin codec, partially implemented in Python
(e.g. ISO-8859-15), a new RecursionError (with empty error message)
can be raised while handle a RecursionError.
Testing for error message was needed to distinguish
a recursion error from arbitrary RuntimeError. After introducing
RecursionError, it became unnecessary.
Gregory P. Smith [Mon, 25 Apr 2022 23:19:39 +0000 (16:19 -0700)]
gh-91401: Add a failsafe way to disable vfork. (#91490)
Just in case there is ever an issue with _posixsubprocess's use of
vfork() due to the complexity of using it properly and potential
directions that Linux platforms where it defaults to on could take, this
adds a failsafe so that users can disable its use entirely by setting
a global flag.
No known reason to disable it exists. But it'd be a shame to encounter
one and not be able to use CPython without patching and rebuilding it.
See the linked issue for some discussion on reasoning.
Also documents the existing way to disable posix_spawn.
Victor Stinner [Mon, 25 Apr 2022 22:13:31 +0000 (00:13 +0200)]
gh-64783: Fix signal.NSIG value on FreeBSD (#91929)
Fix signal.NSIG value on FreeBSD to accept signal numbers greater
than 32, like signal.SIGRTMIN and signal.SIGRTMAX.
* Add Py_NSIG constant.
* Add pycore_signal.h internal header file.
* _Py_Sigset_Converter() now includes the range of valid signals in
the error message.
Victor Stinner [Mon, 25 Apr 2022 22:11:34 +0000 (00:11 +0200)]
gh-89653: PEP 670: Functions don't cast pointers (#91697)
In the limited C API version 3.11 and newer, the following functions
no longer cast their object pointer argument with _PyObject_CAST() or
_PyObject_CAST_CONST():
Barry Warsaw [Sun, 24 Apr 2022 22:50:07 +0000 (15:50 -0700)]
Rewrite audio.py to jive with image.py (#91886)
Similar to the rewrite of email/mime/image.py and associated test after the
deprecation of imghdr.py, thisrewrites email/mime/audio.py and associated
tests after the deprecation of sndhdr.py.
gh-91821: Make decimal test succeed consistently (#91825)
The test relies on precision being set to 9, but some ways of
invoking this test leave it set to 28 instead. I don't know
exactly how it happens, but setting the precision directly should
make the behavior consistent.
gh-89279: In ceval.c, redefine some macros for speed (#32387)
Macros Py_DECREF, Py_XDECREF, Py_IS_TYPE, _Py_atomic_load_32bit_impl
and _Py_DECREF_SPECIALIZED are redefined as macros
that completely replace the inline functions of the same name.
These three came out in the top four of functions that (in MSVC)
somehow weren't inlined.
Co-authored-by: Victor Stinner <vstinner@python.org> Co-authored-by: Dennis Sweeney <36520290+sweeneyde@users.noreply.github.com>
Static inline functions are wrapped by macros which casts arguments
with _PyObject_CAST() to prevent introducing new compiler warnings
when passing "const PyObject*".