Python 3.12 Beta 1 Released: New Type Annotation Syntax, Enhanced F‑Strings, Performance Boosts, and Major Deprecations
The first beta of Python 3.12 has been released, introducing new generic class type‑annotation syntax, more flexible f‑string parsing, improved error messages, performance enhancements, Linux profiler support, several new PEPs for typing, and the removal of deprecated features such as distutils, with the final release slated for October 2 2024.
Python 3.12’s first beta version is now available, marking the feature freeze for this year’s Python release cycle.
Key new capabilities include a fresh type‑annotation syntax for generic classes, more flexible f‑string parsing, enhanced error messages, performance improvements, support for Linux performance profilers, and the removal of various deprecated functions.
New type‑related PEPs:
PEP 688 : Makes the buffer protocol accessible in Python.
PEP 692 : Enables more precise **kwargs typing using TypedDict .
PEP 698 : Introduces decorators that can override static type checking.
Important deprecations and removals:
PEP 623 : Removes wstr from Unicode.
PEP 632 : Removes the distutils package entirely.
Full details of all changes in Python 3.12 can be found on python.org , and the Python Insider blog provides download links and additional information for the beta.
The beta period is expected to run until July, with a release candidate anticipated around July 31, and the final Python 3.12.0 release planned for October 2, 2024.
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