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devel / comp.lang.python.announce / [Python-announce] Python 3.12.1 is now available

o [Python-announce] Python 3.12.1 is now availableThomas Wouters

[Python-announce] Python 3.12.1 is now available


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From: (Thomas Wouters)
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Subject: [Python-announce] Python 3.12.1 is now available
Date: Fri, 8 Dec 2023 01:55:03 +0100
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 by: Thomas Wouters - Fri, 8 Dec 2023 00:55 UTC

Python 3.12.1 is now available.
This is the first maintenance release of Python 3.12
Python 3.12 is the newest major release of the Python programming language,
and it contains many new features and optimizations. 3.12.1 is the latest
maintenance release, containing more than 400 bugfixes, build improvements
and documentation changes since 3.12.0.
new features of the 3.12 series, compared to 3.11
- More flexible f-string parsing
allowing many things previously disallowed (PEP 701
- Support for the buffer protocol
in Python code (PEP 688 <>).
- A new debugging/profiling API
(PEP 669 <>).
- Support for isolated subinterpreters
with separate Global Interpreter Locks (PEP 684
- Even more improved error messages
More exceptions potentially caused by typos now make suggestions to the
- Support for the Linux perf profiler
<> to report
Python function names in traces.
- Many large and small performance improvements
<> (like PEP
709 <> and support for the BOLT binary
optimizer), delivering an estimated 5% overall performance improvement.
- New type annotation syntax
for generic classes (PEP 695 <>).
- New override decorator
for methods (PEP 698 <>).
- The deprecated wstr and wstr_length members of the C implementation of
unicode objects were removed, per PEP 623
- In the unittest module, a number of long deprecated methods and
classes were removed. (They had been deprecated since Python 3.1 or 3.2).
- The deprecated smtpd and distutils modules have been removed (see PEP
594 <> and PEP 632
<>. The setuptools package continues to
provide the distutils module.
- A number of other old, broken and deprecated functions, classes and
methods <> have
been removed.
- Invalid backslash escape sequences in strings now warn with
SyntaxWarning instead of DeprecationWarning, making them more visible.
(They will become syntax errors in the future.)
- The internal representation of integers has changed in preparation for
performance enhancements. (This should not affect most users as it is an
internal detail, but it may cause problems for Cython-generated code.)
For more details on the changes to Python 3.12, see What’s new in Python
3.12 <>.
- Online Documentation <>.
- PEP 693 <>, the Python 3.12
Release Schedule.
- Report bugs via GitHub Issues
- Help fund Python directly
<> or via GitHub Sponsors
<>, and support the Python community
hope you enjoy the new releases!
Thanks to all of the many volunteers who help make Python Development and
these releases possible! Please consider supporting our efforts by
volunteering yourself or through organization contributions to the Python
Software Foundation <>.
Your release team,
Thomas Wouters
Ned Deily
Steve Dower
Łukasz Langa
Thomas Wouters <>

devel / comp.lang.python.announce / [Python-announce] Python 3.12.1 is now available


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