118 lines
3.1 KiB
ReStructuredText
118 lines
3.1 KiB
ReStructuredText
PEP: 569
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Title: Python 3.8 Release Schedule
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Version: $Revision$
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Last-Modified: $Date$
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Author: Łukasz Langa <lukasz@python.org>
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Status: Active
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Type: Informational
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Content-Type: text/x-rst
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Created: 27-Jan-2018
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Python-Version: 3.8
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Abstract
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========
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This document describes the development and release schedule for
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Python 3.8. The schedule primarily concerns itself with PEP-sized
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items.
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.. Small features may be added up to the first beta
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release. Bugs may be fixed until the final release,
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which is planned for end of October 2019.
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Release Manager and Crew
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========================
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- 3.8 Release Manager: Łukasz Langa
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- Windows installers: Steve Dower
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- Mac installers: Ned Deily
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- Documentation: Julien Palard
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3.8 Lifespan
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============
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3.8 will receive bugfix updates approximately every 1-3 months for
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approximately 18 months. After the release of 3.9.0 final, a final
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3.8 bugfix update will be released. After that, it is expected that
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security updates (source only) will be released until 5 years after
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the release of 3.8 final, so until approximately October 2024.
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Release Schedule
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================
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3.8.0 schedule
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--------------
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Actual:
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- 3.8 development begins: Monday, 2018-01-29
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- 3.8.0 alpha 1: Sunday, 2019-02-03
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- 3.8.0 alpha 2: Monday, 2019-02-25
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- 3.8.0 alpha 3: Monday, 2019-03-25
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- 3.8.0 alpha 4: Monday, 2019-05-06
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- 3.8.0 beta 1: Tuesday, 2019-06-04
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(No new features beyond this point.)
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- 3.8.0 beta 2: Monday, 2019-07-04
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- 3.8.0 beta 3: Monday, 2019-07-29
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- 3.8.0 beta 4: Friday, 2019-08-30
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- 3.8.0 candidate 1: Tuesday, 2019-10-01
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Expected:
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- 3.8.0 candidate 2: Monday, 2019-10-07 (if necessary)
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- 3.8.0 final: Monday, 2019-10-14 (assuming a single release candidate)
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Subsequent bugfix releases at a monthly cadence.
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Features for 3.8
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================
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Some of the notable features of Python 3.8 include:
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* PEP 570, Positional-only arguments
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* PEP 572, Assignment Expressions
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* PEP 574, Pickle protocol 5 with out-of-band data
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* PEP 578, Runtime audit hooks
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* PEP 587, Python Initialization Configuration
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* PEP 590, Vectorcall: a fast calling protocol for CPython
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* Typing-related: PEP 591 (Final qualifier), PEP 586 (Literal types),
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and PEP 589 (TypedDict)
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* Parallel filesystem cache for compiled bytecode
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* Debug builds share ABI as release builds
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* f-strings support a handy ``=`` specifier for debugging
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* ``continue`` is now legal in ``finally:`` blocks
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* on Windows, the default ``asyncio`` event loop is now
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``ProactorEventLoop``
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* on macOS, the *spawn* start method is now used by default in
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``multiprocessing``
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* ``multiprocessing`` can now use shared memory segments to avoid
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pickling costs between processes
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* ``typed_ast`` is merged back to CPython
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* ``LOAD_GLOBAL`` is now 40% faster
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* ``pickle`` now uses Protocol 4 by default, improving performance
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There are many other interesting changes, please consult the
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"What's New" page in the documentation for a full list.
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Copyright
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=========
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This document has been placed in the public domain.
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..
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Local Variables:
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mode: indented-text
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indent-tabs-mode: nil
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coding: utf-8
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End:
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