[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."
This was not specified in the PEP, but it will likely be a frequently requested feature if it's not included.
This includes only the "canonical" zones, not a simple listing of every valid value of `key` that can be passed to `Zoneinfo`, because it seems likely that that's what people will want.
Christian Heimes [Sun, 17 May 2020 11:49:10 +0000 (13:49 +0200)]
bpo-40645: Implement HMAC in C (GH-20129)
The internal module ``_hashlib`` wraps and exposes OpenSSL's HMAC API. The
new code will be used in Python 3.10 after the internal implementation
details of the pure Python HMAC module are no longer part of the public API.
The code is based on a patch by Petr Viktorin for RHEL and Python 3.6.
projects / thirdparty / Python / cpython.git / log
