The second alpha release of Python 3.12.0 has been released, an early developer preview of Python 3.12.

Currently Python 3.12 is in development, 3.12.0a2 is the second of seven planned alpha releases, and many new features are still being planned and written. The following briefly introduces the main new features and changes of the 3.12 series compared with 3.11:

• Improve error messages, such as suggesting more exceptions that may be caused by typos
• support for linux perf Profiler reports Python function names during trace
• According to the PEP 623 proposal, the deprecated `wstr` and `wstr_length` members in the C language implementation of unicode objects are removed
• In the `unittest` module, removed some long-deprecated methods and classes (they have been deprecated since Python 3.1 or 3.2)
• The deprecated `smtpd` and `distutilsd` modules have been removed (see PEP 594 and PEP 632), the setuptools package (installed by default in virtualenvs and many other places) continues to provide the `distutilsd` module
• Some other old, broken, and deprecated functions, classes, and methods were also removed
• …

The next pre-release for Python 3.12 will be 3.12.0a3, currently scheduled for 2022-12-5.

See the release announcement for details.