* Use instruction offset, rather than bytecode offset. Streamlines interpreter dispatch a bit, and removes most EXTENDED_ARGs for jumps.
* Change some uses of PyCode_Addr2Line to PyFrame_GetLineNumber
* Enum: streamline repr() and str(); improve docs
- repr() is now ``enum_class.member_name``
- stdlib global enums are ``module_name.member_name``
- str() is now ``member_name``
- add HOW-TO section for ``Enum``
- change main documentation to be an API reference
curses.update_lines_cols() is only defined when the curses library
provides either resizeterm() or resize_term() functions which are optional
and are not provided on AIX.
CVE-2021-3426: Remove the "getfile" feature of the pydoc module which
could be abused to read arbitrary files on the disk (directory
traversal vulnerability). Moreover, even source code of Python
modules can contain sensitive data like passwords. Vulnerability
reported by David Schwörer.
See [PEP 597](https://www.python.org/dev/peps/pep-0597/).
* Add `-X warn_default_encoding` and `PYTHONWARNDEFAULTENCODING`.
* Add EncodingWarning
* Add io.text_encoding()
* open(), TextIOWrapper() emits EncodingWarning when encoding is omitted and warn_default_encoding is enabled.
* _pyio.TextIOWrapper() uses UTF-8 as fallback default encoding used when failed to import locale module. (used during building Python)
* bz2, configparser, gzip, lzma, pathlib, tempfile modules use io.text_encoding().
* What's new entry
This test checks result code of the connection directly, so it never raises an exception that can be suppressed by `support.transient_internet`. Directly support skipping the test in case of unreachable network.
pprint() gains a new boolean underscore_numbers kwarg to emit
integers with thousands separated by an underscore character
for improved readability (for example 1_000_000 instead of 1000000).
Reduce the number of modules imported by "python3 -m module".
The runpy module no longer imports at startup (in the module body),
but only in functions using it: _get_code_from_file() and run_path().
RegressionTestResult.USE_XML must now be set to True to get the JUnit
XML output.
Reduce the number of imports when --junit-xml=FILE option is not
used: 153 => 144 (-9).
Move clear_caches() from libregrtest.refleak to libregrtest.utils to
avoid importing libregrtest.refleak when it's not needed.
clear_caches() now only calls re.purge() if 're' is in sys.modules.
Reduce the number of modules imported by libregrtest.
saved_test_environment no longer imports modules at startup, but try
to get them from sys.modules. If an module is missing, skip the test.
It also sets directly support.environment_altered.
runtest() now now two saved_test_environment instances: one before
importing the test module, one after importing it.
Remove imports from test.libregrtest.save_env:
* asyncio
* logging
* multiprocessing
* shutil
* sysconfig
* urllib.request
* warnings
When a test method imports a module (ex: warnings) and the test
has a side effect (ex: add a warnings filter), the side effect is not
detected, because the module was not imported when Python
enters the saved_test_environment context manager.
bpo-43420: Implement standard transformations in + - * / that can often reduce the size of intermediate integers needed. For rationals with large components, this can yield dramatic speed improvements, but for small rationals can run 10-20% slower, due to increased fixed overheads in the longer-winded code. If those slowdowns turn out to be a problem, see the PR discussion for low-level implementation tricks that could cut other fixed overheads.
Co-authored-by: Tim Peters <tim.peters@gmail.com>
Co-authored-by: Mark Dickinson <dickinsm@gmail.com>
Irit Katriel
Dennis Sweeney
Inada Naoki
Brett Cannon
Zackery Spytz
Mark Shannon
Victor Stinner
Terry Jan Reedy
Ethan Furman
Alex Prengère
Grégory Starck
Pablo Galindo
Michael Felt
Jesús Cea
Serhiy Storchaka
Carl Meyer
Christian Heimes
sblondon
Joshua Bronson
Hai Shi
Sergey B Kirpichev
