On Windows, when the Python test suite is run with the -jN option,
the ANSI code page is now used as the encoding for the stdout
temporary file, rather than using UTF-8 which can lead to decoding
errors.
Linux abstract sockets are insecure as they lack any form of filesystem
permissions so their use allows anyone on the system to inject code into
the process.
This removes the default preference for abstract sockets in
multiprocessing introduced in Python 3.9+ via
https://github.com/python/cpython/pull/18866 while fixing
https://github.com/python/cpython/issues/84031.
Explicit use of an abstract socket by a user now generates a
RuntimeWarning. If we choose to keep this warning, it should be
backported to the 3.7 and 3.8 branches.
* The compiler analyzes the usage of the first 64 local variables all at once using bit masks.
* Local variables beyond the first 64 are only partially analyzed, achieving linear time.
Work on test coverage for `PyObject_Print` made it clear that some lines can't get executed.
Simplify the function by excluding the checks for non-string types.
Also eliminate creating a temporary bytes object.
Added os.setns and os.unshare to easily switch between namespaces
on Linux.
Co-authored-by: Christian Heimes <christian@python.org>
Co-authored-by: CAM Gerlach <CAM.Gerlach@Gerlach.CAM>
Co-authored-by: Victor Stinner <vstinner@python.org>
Make sys.setprofile() and sys.settrace() functions reentrant. They
can no long fail with: RuntimeError("Cannot install a trace function
while another trace function is being installed").
Make _PyEval_SetTrace() and _PyEval_SetProfile() functions reentrant,
rather than detecting and rejecting reentrant calls. Only delete the
reference to function arguments once the new function is fully set,
when a reentrant call is safe. Call also _PySys_Audit() earlier.
Rely on the title of the linked internal page instead of putting the title. Sphinx will render with the title correctly, and this will reduce work for translators
* Link ZipFile in What's New entry discussing it
* Add entry for new ZipFile.mkdir method
* Add entry for new zipfile.Path.stem/suffix/suffixes methods
* Add missing line breaks between zipfile bullet list items
* Add entry for new logging.getLevelNamesMapping function
* Add entry for SysLogHandler.createSocket to whatsnew
* Add missing line break between logging bullet list items
The os module and the PyUnicode_FSDecoder() function no longer accept
bytes-like paths, like bytearray and memoryview types: only the exact
bytes type is accepted for bytes strings.
A small example of what a full date and time would look like would help a lot of developers who may not realize that they should investigate `time.h`'s `strftime`, run `man strftime`, or click through a series of docs on the python docs before they get to the actual [definition here](https://docs.python.org/3/library/datetime.html#strftime-and-strptime-format-codes) which still doesn't have an obvious copy-pastable example of "what the heck format does this thing actually expect?".
Automerge-Triggered-By: GH:rhettinger
* Whatsnew: Convert literals in enum section to actual x-references
* Whatsnew: Rewrite enum section for clear and consistant phrasing
* Whatsnew: Combine directly related enum items instead of seperating them
* gh-98250: Describe __str__/__format__ changes more clearly/accurately
* Tweak enum section language per feedback from Ethan
* Add line breaks & ref targets to Whatsnew to prepare for future changes
* Use standard heading underbar symbols for H4 sections
* Flatten Porting subsection; clarify scope of/link Python->CAPI sections
* Move C API pending deprecations to C API section, to match the others
Part of #95913
Forward port of #93306, which was a backport of #93185, to address #84694
This adds the What's New entry for the removal of the subinterpreter-related env variable, build-time flag, etc. As @ericsnowcurrently was author of the original changes, I added him as a co-author to the commit.
This addition to the Python 3.11 What's New document were only made to the Python 3.11 branch during the backport process, and not added to the version in `main`. Forward-porting it ensures the docs retain these additions for the future, rather than being lost in a legacy Python versions, allows it to be be edited as part of #95913 , and avoids merge conflicts with routine back-ports of PRs touching it.
I've pulled in the addition exactly as-is with no modifications; any editing will be done in future PRs (and therefore can be reviewed and backported accordingly).
The one other such addition is forward-ported in #98344
