Python 3.8 is still in development. This release, 3.8.0b4 is the last of four planned beta release previews. Beta release previews are intended to give the wider community the opportunity to test new features and bug fixes and to prepare their projects to support the new feature release.
We strongly encourage maintainers of third-party Python projects to test with 3.8 during the beta phase and report issues found to the Python bug tracker as soon as possible. While the release is planned to be feature complete entering the beta phase, it is possible that features may be modified or, in rare cases, deleted up until the start of the release candidate phase (2019-09-30). Our goal is have no ABI changes after beta 3 and no code changes after 3.8.0rc1, the release candidate. To achieve that, it will be extremely important to get as much exposure for 3.8 as possible during the beta phase.
Please keep in mind that this is a preview release and its use is not recommended for production environments.
Some of the new major new features and changes in Python 3.8 are:
=
specifier for debuggingcontinue
is now legal in finally:
blocksasyncio
event loop is now ProactorEventLoop
multiprocessing
multiprocessing
can now use shared memory segments to avoid pickling costs between processestyped_ast
is merged back to CPythonLOAD_GLOBAL
is now 40% fasterpickle
now uses Protocol 4 by default, improving performanceThere are many other interesting changes, please consult the "What's New" page in the documentation for a full list.
The next pre-release of Python 3.8 and the first release candidate will be 3.8.0rc1, currently scheduled for 2019-09-30.
Updates may require up to 24 hours to propagate to mirrors. If the following command doesn't work, please retry later:
sudo dnf upgrade --refresh --advisory=FEDORA-2019-d58eb75449
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This update has been submitted for testing by churchyard.
This update's test gating status has been changed to 'waiting'.
This update's test gating status has been changed to 'ignored'.
This update has been pushed to testing.
churchyard edited this update.
churchyard edited this update.
This update can be pushed to stable now if the maintainer wishes
This update has been submitted for stable by bodhi.
This update has been pushed to stable.