`int` fails back to `__trunc__` is `__int__` isn't defined, so cover
that in the docs.
(cherry picked from commit 308eab979d)
Co-authored-by: Eric Appelt <eric.appelt@gmail.com>
When `__getattr__` is implemented, attribute lookup will always fall back to that,
even if the initial failure comes from `__getattribute__` or a descriptor's `__get__`
method (including property methods).
(cherry picked from commit d1f318105b)
Co-authored-by: Cheryl Sabella <cheryl.sabella@gmail.com>
The module `__class__` attribute documentation added to 3.7 for PEP 562
(dynamic module attributes) also applies to earlier versions. This backports
that subset of the new docs to the 3.6 branch so that it will appear in the
main online documentation and in the final 3.6 binary release.
Patch by Cheryl Sabella.
* Fix GH-32377: improve __del__ docs and fix mention about resurrection
* Mention that CPython only calls __del__ once.
(cherry picked from commit 4b965930e8)
Builtin container types have two potential link targets in the docs:
- their entry in the list of builtin callables
- their type documentation
This change brings `bytes` and `bytearray` into line with other
container types by having cross-references default to linking to
their type documentation, rather than their builtin callable entry..
(cherry picked from commit c6db4811f9)
The data model section of the language reference was written well
before the zero-argument form of super() was added.
To avoid giving the impression that they're doing something
unusual, this updates the description of `__new__` and `__init__`
to use the zero-argument form.
Patch by Cheryl Sabella.
(cherry picked from commit 12b1c18098)
Issue #28383: __hash__ documentation recommends naive XOR to combine but this
is suboptimal. Update the doc to suggest to reuse the hash() method using a
tuple, with an example.
Handling zero-argument super() in __init_subclass__ and
__set_name__ involved moving __class__ initialisation to
type.__new__. This requires cooperation from custom
metaclasses to ensure that the new __classcell__ entry
is passed along appropriately.
The initial implementation of that change resulted in abruptly
broken zero-argument super() support in metaclasses that didn't
adhere to the new requirements (such as Django's metaclass for
Model definitions).
The updated approach adopted here instead emits a deprecation
warning for those cases, and makes them work the same way they
did in Python 3.5.
This patch also improves the related class machinery documentation
to cover these details and to include more reader-friendly
cross-references and index entries.
- Issue #25958: Support "anti-registration" of special methods from
various ABCs, like __hash__, __iter__ or __len__. All these (and
several more) can be set to None in an implementation class and the
behavior will be as if the method is not defined at all.
(Previously, this mechanism existed only for __hash__, to make
mutable classes unhashable.) Code contributed by Andrew Barnert and
Ivan Levkivskyi.
Miss Islington (bot)
Cheryl Sabella
Mariatta
csabella
Serhiy Storchaka
Berker Peksag
Victor Stinner
Yury Selivanov
Nick Coghlan
Martin Panter
Eric Snow
Raymond Hettinger
Guido van Rossum
R David Murray
Tommy Beadle
Yury Selivanov