#4447: python3-3.7.3
--------------------+-----------------------
Reporter: bdubbs | Owner: lfs-book
Type: task | Status: new
Priority: high | Milestone: 8.5
Component: Book | Version: SVN
Severity: normal | Resolution:
Keywords: |
--------------------+-----------------------
Changes (by bdubbs):
* priority: normal => high
Comment:
What's New in Python 3.7.3
Security
- bpo-36216: Changes urlsplit() to raise ValueError when the URL contains
characters that decompose under IDNA encoding (NFKC-normalization) into
characters that affect how the URL is parsed.
- bpo-35746: [CVE-2019-5010] Fix a NULL pointer deref in ssl module. The
cert parser did not handle CRL distribution points with empty DP or URI
correctly. A malicious or buggy certificate can result into segfault.
- bpo-35121: Don't send cookies of domain A without Domain attribute to
domain B when domain A is a suffix match of domain B while using a
cookiejar with :class:`http.cookiejar.DefaultCookiePolicy` policy.
Core and Builtins
- bpo-35942: The error message emitted when returning invalid types from
``__fspath__`` in interfaces that allow passing :class:`~os.PathLike`
objects has been improved and now it does explain the origin of the
error.
- bpo-35992: Fix ``__class_getitem__()`` not being called on a class with
a
custom non-subscriptable metaclass.
- bpo-35991: Fix a potential double free in Modules/_randommodule.c.
- bpo-35961: Fix a crash in slice_richcompare(): use strong references
rather than stolen references for the two temporary internal tuples.
- bpo-31506: Clarify the errors reported when ``object.__new__`` and
``object.__init__`` receive more than one argument. Contributed by
Sanyam
Khurana.
- bpo-35720: Fixed a minor memory leak in pymain_parse_cmdline_impl
function
in Modules/main.c
- bpo-35623: Fix a crash when sorting very long lists. Patch by Stephan
Hohe.
- bpo-35214: clang Memory Sanitizer build instrumentation was added to
work
around false positives from posix, socket, time, test_io, and
test_faulthandler.
- bpo-35560: Fix an assertion error in :func:`format` in debug build for
floating point formatting with "n" format, zero padding and small width.
Release build is not impacted.
- bpo-35552: Format characters ``%s`` and ``%V`` in
:c:func:`PyUnicode_FromFormat` and ``%s`` in
:c:func:`PyBytes_FromFormat`
no longer read memory past the limit if *precision* is specified.
- bpo-35504: Fix segfaults and :exc:`SystemError`\ s when deleting certain
attributes.
- bpo-33989: Fix a possible crash in :meth:`list.sort` when sorting
objects
with ``ob_type->tp_richcompare == NULL``.
Library
- bpo-35931: The :mod:`pdb` ``debug`` command now gracefully handles all
exceptions.
- bpo-36251: Fix format strings used for stderrprinter and re.Match reprs.
Patch by Stephan Hohe.
- bpo-35807: Update ensurepip to install pip 19.0.3 and setuptools 40.8.0.
- bpo-36179: Fix two unlikely reference leaks in _hashopenssl. The leaks
only occur in out-of-memory cases.
- bpo-35178: Ensure custom :func:`warnings.formatwarning` function can
receive `line` as positional argument.
- bpo-36106: Resolve potential name clash with libm's sinpi().
- bpo-35512: :func:`unittest.mock.patch.dict` used as a decorator with
string target resolves the target during function call instead of during
decorator construction.
- bpo-36091: Clean up reference to async generator in Lib/types.
- bpo-35899: Enum has been fixed to correctly handle empty strings and
strings with non-Latin characters (ie. 'α', 'א') without crashing.
- bpo-35918: Removed broken ``has_key`` method from
multiprocessing.managers.SyncManager.dict.
- bpo-35960: Fix :func:`dataclasses.field` throwing away empty mapping
objects passed as metadata.
- bpo-35847: RISC-V needed the CTYPES_PASS_BY_REF_HACK. Fixes ctypes
Structure test_pass_by_value.
- bpo-35780: Fix lru_cache() errors arising in recursive, reentrant, or
multi-threaded code. These errors could result in orphan links and in
the
cache being trapped in a state with fewer than the specified maximum
number of links. Fix handling of negative maxsize which should have been
treated as zero. Fix errors in toggling the "full" status flag. Fix
misordering of links when errors are encountered. Sync-up the C code
and
pure Python code for the space saving path in functions with a single
positional argument. In this common case, the space overhead of an lru
cache entry is reduced by almost half. Fix counting of cache misses. In
error cases, the miss count was out of sync with the actual number of
times the underlying user function was called.
- bpo-23846: :class:`asyncio.ProactorEventLoop` now catches and logs send
errors when the self-pipe is full.
- bpo-34323: :mod:`asyncio`: Enhance ``IocpProactor.close()`` log: wait 1
second before the first log, then log every second. Log also the number
of
seconds since ``close()`` was called.
- bpo-34294: re module, fix wrong capturing groups in rare cases.
:func:`re.search`, :func:`re.findall`, :func:`re.sub` and other
functions
that scan through string looking for a match, should reset capturing
groups between two match attempts.
- bpo-35717: Fix KeyError exception raised when using enums and compile.
- bpo-35699: Fixed detection of Visual Studio Build Tools 2017 in
distutils
- bpo-32710: Fix memory leaks in asyncio ProactorEventLoop on overlapped
operation failure.
- bpo-32710: Fix a memory leak in asyncio in the ProactorEventLoop when
``ReadFile()`` or ``WSASend()`` overlapped operation fail immediately:
release the internal buffer.
- bpo-35682: Fix ``asyncio.ProactorEventLoop.sendfile()``: don't attempt
to
set the result of an internal future if it's already done.
- bpo-35283: Add a pending deprecated warning for the
:meth:`threading.Thread.isAlive` method.
- bpo-35643: Fixed a SyntaxWarning: invalid escape sequence in
Modules/_sha3/cleanup.py.
- bpo-35615: :mod:`weakref`: Fix a RuntimeError when copying a
WeakKeyDictionary or a WeakValueDictionary, due to some keys or values
disappearing while iterating.
- bpo-28503: The `crypt` module now internally uses the `crypt_r()`
library
function instead of `crypt()` when available.
- bpo-35121: Don't set cookie for a request when the request path is a
prefix match of the cookie's path attribute but doesn't end with "/".
Patch by Karthikeyan Singaravelan.
- bpo-35585: Speed-up building enums by value, e.g. http.HTTPStatus(200).
- bpo-21478: Calls to a child function created with
:func:`unittest.mock.create_autospec` should propagate to the parent.
Patch by Karthikeyan Singaravelan.
- bpo-35513: :class:`~unittest.runner.TextTestRunner` of
:mod:`unittest.runner` now uses :func:`time.perf_counter` rather than
:func:`time.time` to measure the execution time of a test:
:func:`time.time` can go backwards, whereas :func:`time.perf_counter` is
monotonic.
- bpo-35502: Fixed reference leaks in
:class:`xml.etree.ElementTree.TreeBuilder` in case of unfinished
building
of the tree (in particular when an error was raised during parsing XML).
- bpo-31446: Copy command line that was passed to CreateProcessW since
this
function can change the content of the input buffer.
- bpo-20239: Allow repeated assignment deletion of
:class:`unittest.mock.Mock` attributes.
- bpo-17185: Set ``__signature__`` on mock for :mod:`inspect` to get
signature.
- bpo-10496: :func:`~distutils.utils.check_environ` of
:mod:`distutils.utils` now catches :exc:`KeyError` on calling
:func:`pwd.getpwuid`: don't create the ``HOME`` environment variable in
this case.
- bpo-35066: Previously, calling the strftime() method on a datetime
object
with a trailing '%' in the format string would result in an exception.
However, this only occured when the datetime C module was being used;
the
python implementation did not match this behavior. Datetime is now
PEP-399
compliant, and will not throw an exception on a trailing '%'.
- bpo-24746: Avoid stripping trailing whitespace in doctest fancy diff.
- bpo-35198: Fix C++ extension compilation on AIX
- bpo-28441: On Cygwin and MinGW, ensure that ``sys.executable`` always
includes the full filename in the path, including the ``.exe`` suffix
(unless it is a symbolic link).
- bpo-34572: Fix C implementation of pickle.loads to use importlib's
locking
mechanisms, and thereby avoid using partially-loaded modules.
- bpo-33687: Fix the call to ``os.chmod()`` for ``uu.decode()`` if a mode
is
given or decoded.
- bpo-32146: Document the interaction between frozen executables and the
spawn and forkserver start methods in multiprocessing.
Documentation
- bpo-36083: Fix formatting of --check-hash-based-pycs options in the
manpage Synopsis.
- bpo-34764: Improve example of iter() with 2nd sentinel argument.
- bpo-21314: A new entry was added to the Core Language Section of the
Programming FAQ, which explaines the usage of slash(/) in the signature
of
a function.
- bpo-22062: Update documentation and docstrings for pathlib.
Tests
- bpo-36234: test_posix.PosixUidGidTests: add tests for invalid uid/gid
type
(str). Initial patch written by David Malcolm.
- bpo-29571: Fix ``test_re.test_locale_flag()``: use
``locale.getpreferredencoding()`` rather than ``locale.getlocale()`` to
get the locale encoding. With some locales, ``locale.getlocale()``
returns
the wrong encoding. On Windows, set temporarily the ``LC_CTYPE`` locale
to
the user preferred encoding to ensure that it uses the ANSI code page,
to
be consistent with ``locale.getpreferredencoding()``.
- bpo-36123: Fix race condition in test_socket.
- bpo-27313: Avoid test_ttk_guionly ComboboxTest failure with macOS Cocoa
Tk.
- bpo-36019: Add test.support.TEST_HTTP_URL and replace references of
http://www.example.com by this new constant.
- bpo-36037: Fix test_ssl for strict OpenSSL configuration like RHEL8
strict
crypto policy. Use older TLS version for minimum TLS version of the
server
SSL context if needed, to test TLS version older than default minimum
TLS
version.
- bpo-35505: Make test_imap4_host_default_value independent on whether the
local IMAP server is running.
- bpo-35917: multiprocessing: provide unit tests for SyncManager and
SharedMemoryManager classes + all the shareable types which are supposed
to be supported by them.
- bpo-35772: Fix sparse file tests of test_tarfile on ppc64 with the tmpfs
filesystem. Fix the function testing if the filesystem supports sparse
files: create a file which contains data and "holes", instead of
creating
a file which contains no data. tmpfs effective block size is a page size
(tmpfs lives in the page cache). RHEL uses 64 KiB pages on aarch64,
ppc64,
ppc64le, only s390x and x86_64 use 4 KiB pages, whereas the test punch
holes of 4 KiB.
- bpo-35045: Make ssl tests less strict and also accept TLSv1 as system
default. The changes unbreaks test_min_max_version on Fedora 29.
- bpo-31731: Fix a race condition in ``check_interrupted_write()`` of
test_io: create directly the thread with SIGALRM signal blocked, rather
than blocking the signal later from the thread. Previously, it was
possible that the thread gets the signal before the signal is blocked.
- bpo-35424: Fix test_multiprocessing_main_handling: use
:class:`multiprocessing.Pool` with a context manager and then explicitly
join the pool.
- bpo-35519: Rename :mod:`test.bisect` module to :mod:`test.bisect_cmd` to
avoid conflict with :mod:`bisect` module when running directly a test
like
``./python Lib/test/test_xmlrpc.py``.
- bpo-35513: Replace :func:`time.time` with :func:`time.monotonic` in
tests
to measure time delta.
- bpo-34279: :func:`test.support.run_unittest` no longer raise
:exc:`TestDidNotRun` if the test result contains skipped tests. The
exception is now only raised if no test have been run and no test have
been skipped.
- bpo-35412: Add testcase to ``test_future4``: check unicode literal.
- bpo-26704: Added test demonstrating double-patching of an instance
method.
Build
- bpo-34691: The _contextvars module is now built into the core Python
library on Windows.
- bpo-35683: Improved Azure Pipelines build steps and now verifying
layouts
correctly
- bpo-35642: Remove asynciomodule.c from pythoncore.vcxproj
- bpo-35550: Fix incorrect Solaris #ifdef checks to look for __sun &&
__SVR4
instead of sun when compiling.
IDLE
- bpo-36176: Fix IDLE autocomplete & calltip popup colors. Prevent
conflicts
with Linux dark themes (and slightly darken calltip background).
- bpo-36152: Remove colorizer.ColorDelegator.close_when_done and the
corresponding argument of .close(). In IDLE, both have always been None
or False since 2007.
- bpo-32129: Avoid blurry IDLE application icon on macOS with Tk 8.6.
Patch
by Kevin Walzer.
- bpo-24310: IDLE -- Document settings dialog font tab sample.
- bpo-36096: Refactor class variables to instance variables in colorizer.
- bpo-35833: Revise IDLE doc for control codes sent to Shell. Add a code
example block.
- bpo-35770: IDLE macosx deletes Options => Configure IDLE. It previously
deleted Window => Zoom Height by mistake. (Zoom Height is now on the
Options menu). On Mac, the settings dialog is accessed via Preferences
on
the IDLE menu.
- bpo-35769: Change IDLE's new file name from 'Untitled' to 'untitled'
- bpo-35689: Add docstrings and unittests for colorizer.py.
- bpo-35660: Fix imports in idlelib.window.
- bpo-35641: Proper format `calltip` when the function has no docstring.
- bpo-33987: Use ttk Frame for ttk widgets.
- bpo-34055: Fix erroneous 'smart' indents and newlines in IDLE Shell.
- bpo-35591: Find Selection now works when selection not found.
- bpo-35196: Speed up squeezer line counting.
- bpo-35598: Update config_key: use PEP 8 names and ttk widgets, make some
objects global, and add tests.
- bpo-28097: Add Previous/Next History entries to Shell menu.
- bpo-35208: Squeezer now properly counts wrapped lines before newlines.
- bpo-35555: Gray out Code Context menu entry when it's not applicable.
- bpo-35521: Document the IDLE editor code context feature. Add some
internal references within the IDLE doc.
- bpo-22703: The Code Context menu label now toggles between Show/Hide
Code
Context. The Zoom Height menu now toggles between Zoom/Restore Height.
Zoom Height has moved from the Window menu to the Options menu.
Tools/Demos
- bpo-35132: Fix py-list and py-bt commands of python-gdb.py on gdb7.
C API
- bpo-33817: Fixed :c:func:`_PyBytes_Resize` for empty bytes objects.
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