Upcoming Features in Python 3.10 Alpha Release
The article outlines the current status of Python 3.10 development, describing the fifth alpha release, its purpose for testing new features and bug fixes, the timeline through beta and release candidate phases, and lists the major new language features and changes planned.
Python 3.10 is still under development. Version 3.10.0a5 is the fifth of seven planned alpha releases. Alpha releases are intended to test new features, bug fixes, and the release process. Features may continue to be added until the Beta phase (2021‑05‑03) and may be modified or removed up to the RC phase (2021‑10‑04). This is a preview version and is not recommended for production use.
Many new features and changes are still being planned and written. The main new features and changes so far include:
Removal of wstr from Unicode
Allowing union types to be written as X|Y
Parameter specification variables
Precise line numbers for debugging and other tools
from __future__ import annotations is now the default
Optional length checks added to zip
Formal support for parenthesized context managers
Deprecation of the distutils module
Explicit type aliases
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