* PEP 540: Update based on PEP 538 experience
- CentOS 7 is a better example of problems than Alpine Linux
(default locale is C/POSIX, C.UTF-8 isn't available for coercion)
- reword the annex discussing the design trade-offs between
PEP 538's locale coercion and PEP 540's introduction of a
UTF-8 specific mode
* Tweak wording of PEP 538 comparison
Mention an updated schedule for non-provisional status and the end of
non-typing annotations in PEP 563, and link there for the __future__
statement as well.
Neither of the authors of these PEPs are currently actively
championing them, and offering dedicated constructs for
working with partially structured hierarchical data is
still a relatively novel programming language design concept
in general.
Since there's no harm in waiting for more feedback and ideas,
deferring them for potential future consideration seems like a
good option for now.
- note advice for test runners in abstract
- add explicit sections for test runner and
interactive shell guidance
- simplify the warning category descriptions
by moving the test runner details to their
new section
- make it clear FutureWarning is gaining a
second use case, while also keeping its old
one
- note that IPython already follows the new
guidance for interactive shells (and use
their approach as an example)
- reword the advice for library and framework
authors wanting seeking noisier compatibility
warnings on earlier Python versions
The major changes from the previous version are:
- Add InitVar to specify initialize-only fields.
- Renamed __dataclass_post_init__() to __post_init().
- Rename cmp to compare.
- Added eq, separate from compare, so you can test
unorderable items for equality.
- Flushed out asdict() and astuple().
- Changed replace() to just call __init__(), and dropped
complex post-create logic.
Dustin Ingram
Eric Snow
Nicola Soranzo
Nick Coghlan
Victor Stinner
Ned Deily
Lukasz Langa
Michael Laing
Richard Eames
Eric V. Smith
Guido van Rossum
Oleg Broytman
JR Heard
Mariatta
James Ray
Chris Angelico
Benjamin Peterson