* Use a more universal explanation of string interpolation rather than specifically referencing sprintf(), which depends on the reader having a C background.
bpo-40795: ctypes calls unraisablehook with an exception (GH-20452)
If ctypes fails to convert the result of a callback or if a ctypes
callback function raises an exception, sys.unraisablehook is now
called with an exception set. Previously, the error was logged into
stderr by PyErr_Print().
(cherry picked from commit 10228bad0452d94e66c964b625a0b61befa08e59)
Co-authored-by: Victor Stinner <vstinner@python.org>
```
D:\a\cpython\cpython\Modules\_zoneinfo.c(903,52): warning C4267: '=': conversion from 'size_t' to 'unsigned int', possible loss of data [D:\a\cpython\cpython\PCbuild\_zoneinfo.vcxproj]
D:\a\cpython\cpython\Modules\_zoneinfo.c(904,44): warning C4267: '=': conversion from 'size_t' to 'unsigned int', possible loss of data [D:\a\cpython\cpython\PCbuild\_zoneinfo.vcxproj]
D:\a\cpython\cpython\Modules\_zoneinfo.c(1772,31): warning C4244: '=': conversion from 'ssize_t' to 'uint8_t', possible loss of data [D:\a\cpython\cpython\PCbuild\_zoneinfo.vcxproj]
```
(cherry picked from commit e4799b95945b44eb0e2eea26473db8e0a49ed0ee)
Co-authored-by: Pablo Galindo <Pablogsal@gmail.com>
bpo-13097: ctypes: limit callback to 1024 arguments (GH-19914)
ctypes now raises an ArgumentError when a callback
is invoked with more than 1024 arguments.
The ctypes module allocates arguments on the stack in
ctypes_callproc() using alloca(), which is problematic
when large numbers of arguments are passed. Instead
of a stack overflow, this commit raises an ArgumentError
if more than 1024 parameters are passed.
(cherry picked from commit 29a1384c040d39659e7d01f1fd7b6eb71ef2634e)
Co-authored-by: Sean Gillespie <sean@swgillespie.me>
Fix the link to ncurses patch download in macos installer build script (GH-20421)
Reason: the link `ftp://invisible-island.net/ncurses//5.9/ncurses-5.9-20120616-patch.sh.bz2` is dead, which prevents `Mac/BuildScript/build-installer.py` from completing. Looks like the host of the FTP server was changed to `ftp.invisible-island.net`, thus this proposal.
[3.9] bpo-38964: Print correct filename on a SyntaxError in an fstring (GH-20399) (GH-20404)
When a `SyntaxError` in the expression part of a fstring is found,
the filename attribute of the `SyntaxError` is always `<fstring>`.
With this commit, it gets changed to always have the name of the file
the fstring resides in.
bpo-40688: Use the correct parser in the peg_generator scripts (GH-20235)
The scripts in `Tools/peg_generator/scripts` mostly assume that
`ast.parse` and `compile` use the old parser, since this was the
state of things, while we were developing them. They need to be
updated to always use the correct parser. `_peg_parser` is being
extended to support both parsing and compiling with both parsers.
(cherry picked from commit 9645930b5bc1833ef495891d22052d1ba65ab7ea)
:mod:`hashlib` no longer falls back to builtin hash implementations when
OpenSSL provides a hash digest and the algorithm is blocked by security
policy.
bpo-40696: Fix a hang that can arise after gen.throw() (GH-20287)
This updates _PyErr_ChainStackItem() to use _PyErr_SetObject()
instead of _PyErr_ChainExceptions(). This prevents a hang in
certain circumstances because _PyErr_SetObject() performs checks
to prevent cycles in the exception context chain while
_PyErr_ChainExceptions() doesn't.
(cherry picked from commit 7c30d12bd5359b0f66c4fbc98aa055398bcc8a7e)
Co-authored-by: Chris Jerdonek <chris.jerdonek@gmail.com>
bpo-40334: Produce better error messages for non-parenthesized genexps (GH-20153)
The error message, generated for a non-parenthesized generator expression
in function calls, was still the generic `invalid syntax`, when the generator expression wasn't appearing as the first argument in the call. With this patch, even on input like `f(a, b, c for c in d, e)`, the correct error message gets produced.
(cherry picked from commit ae145833025b0156ee2a28219e3370f3b27b2a36)
bpo-32309: Add support for contextvars in asyncio.to_thread() (GH-20278)
Allows contextvars from the main thread to be accessed in the separate thread used in `asyncio.to_thread()`. See the [discussion](https://github.com/python/cpython/pull/20143GH-discussion_r427808225) in GH-20143 for context.
Victor Stinner [Tue, 19 May 2020 22:27:46 +0000 (00:27 +0200)]
[3.9] bpo-40514: Remove --with-experimental-isolated-subinterpreters in 3.9 (GH-20228)
Remove --with-experimental-isolated-subinterpreters configure option
in Python 3.9: the experiment continues in the master branch, but
it's no longer needed in 3.9.
Without this, only the _zoneinfo module is getting installed, not the
zoneinfo module. I believe this was not noticed earlier because
test.test_zoneinfo was also not being installed.
(cherry picked from commit 2abededbc4165d2daa14ae9d74b1f33cce0593d7)
```
Warning, treated as error:
/tmp/code/Doc/library/zoneinfo.rst:303:Error in "code-block" directive:
1 argument(s) required, 0 supplied.
.. code-block::
>>> a = ZoneInfo("Europe/Berlin")
>>> b = pickle.loads(europe_berlin_pkl)
>>> a is b
True
```
(cherry picked from commit 9095f76613c8dd67beb21992def837bb8a37ed25)
Co-authored-by: Anthony Sottile <asottile@umich.edu>
This allows building with older versions of the Windows SDK where the value is not defined.
(cherry picked from commit 711f9e180a48baba62301735b7f1a58ef0d0e93a)
bpo-39631: Fix file association MIME type in the Windows installer (GH-20205)
Use text/x-python instead of text/plain to avoid issues with tools assuming that "ShellExecute(script)" is a non-executable operation.
(cherry picked from commit 8c862e51248c5ebfec787badec88eb58c9267e1e)
Implements `asyncio.to_thread`, a coroutine for asynchronously running IO-bound functions in a separate thread without blocking the event loop. See the discussion starting from [here](https://github.com/python/cpython/pull/18410GH-issuecomment-628930973) in GH-18410 for context.
Batuhan Taskaya [Mon, 18 May 2020 20:48:49 +0000 (23:48 +0300)]
bpo-38870: Don't omit parenthesis when unparsing a slice in ast.unparse
When unparsing a non-empty tuple, the parentheses can be safely
omitted if there aren't any elements that explicitly require them (such as starred expressions).
CyberSaxosTiGER [Mon, 18 May 2020 18:41:35 +0000 (21:41 +0300)]
bpo-38870: correctly escape unprintable characters on ast.unparse (GH-20166)
Unprintable characters such as `\x00` weren't correctly roundtripped
due to not using default string repr when generating docstrings. This
patch correctly encodes all unprintable characters (except `\n` and `\t`, which
are commonly used for formatting, and found unescaped).
Co-authored-by: Pablo Galindo <Pablogsal@gmail.com> Co-authored-by: Batuhan Taskaya <isidentical@gmail.com>
bpo-40669: Install PEG benchmarking dependencies in a venv (GH-20183)
Create a `make venv` target, that creates a virtual environment
and installs the dependency in that venv. `make time` and all
the related targets are changed to use the virtual environment
python.
The commit is causing make failures on a FreeBSD buildbot.
Due to the imminent 3.9.0b1 cutoff, revert this commit for
now pending further investigation.
Ned Deily [Mon, 18 May 2020 13:17:22 +0000 (09:17 -0400)]
bpo-26317: Support OBJC and OBJCXX configure command line variables (GH-20176)
Add support to the configure script for OBJC and OBJCXX command line options so that the macOS builds can use the clang compiler for the macOS-specific Objective C source files. This allows third-party compilers, like GNU gcc, to be used to build the rest of the project since some of the Objective C system header files are not compilable by GNU gcc.
Co-authored-by: Jeffrey Kintscher <websurfer@surf2c.net> Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>
Ned Deily [Mon, 18 May 2020 08:32:38 +0000 (04:32 -0400)]
bpo-34956: Fix macOS _tkinter use of Tcl/Tk in /Library/Frameworks (GH-20171)
_tkinter now builds and links with non-system Tcl and Tk frameworks if they
are installed in /Library/Frameworks as had been the case on older releases
of macOS. If a macOS SDK is explicitly configured, by using ./configure
--enable-universalsdk= or -isysroot, only a Library/Frameworks directory in
the SDK itself is searched. The default behavior can still be overridden with
configure --with-tcltk-includes and --with-tcltk-libs.
Kjell Braden [Mon, 18 May 2020 06:21:30 +0000 (08:21 +0200)]
bpo-39148: enable ipv6 for datagrams in Proactor (GH-19121)
Ifdef is not necessary, as AF_INET6 is supported from Windows Vista, and other code in overlapped.c uses AF_INET6 and is not ifdef'd.
Change the raised exception so users are not fooled to think it comes from Windows API.
Chris Jerdonek [Mon, 18 May 2020 05:47:31 +0000 (22:47 -0700)]
bpo-31033: Improve the traceback for cancelled asyncio tasks (GH-19951)
When an asyncio.Task is cancelled, the exception traceback now
starts with where the task was first interrupted. Previously,
the traceback only had "depth one."
projects / thirdparty / Python / cpython.git / log
