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67 Commits

Author SHA1 Message Date
Eric V. Smith d3062f672c
bpo-44649: Fix dataclasses(slots=True) with a field with a default, but init=False (GH-29692) 
Special handling is needed, because for non-slots dataclasses the instance attributes are not set: reading from a field just references the class's attribute of the same name, which contains the default value. But this doesn't work for classes using __slots__: they don't read the class's attribute. So in that case (and that case only), initialize the instance attribute. Handle this for both normal defaults, and for fields using default_factory.
 2021-11-22 08:26:12 -05:00
Eric V. Smith f7638dd0f9
Added kw_only parameter to make_dataclasses. (GH-29679) 2021-11-20 18:25:56 -05:00
Landon Yarrington 5b4a7675bc
Fix dataclassses spelling (GH-28837) 2021-10-09 15:17:52 -04:00
Binbin 17b16e13bb
Fix typos in multiple files (GH-26689) 
Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>
 2021-06-12 22:47:44 -04:00
Sean Grady 7e6f237569
Fix dataclass comment typo _eq__ -> __eq__ (GH-26433) 2021-05-28 16:57:18 -04:00
Eric V. Smith 99ad742ea9
bpo-44015: dataclasses should allow KW_ONLY to be specified only once per class (GH-25841) 
bpo-44015: Raise a TypeError if KW_ONLY is specified more than once.
 2021-05-03 03:24:53 -04:00
Eric V. Smith 823fbf4e0e
If using a frozen class with slots, add __getstate__ and __setstate__ to set the instance values. (GH-25786) 2021-05-01 13:27:30 -04:00
Yurii Karabas c24199184b
bpo-42269: Add slots parameter to dataclass decorator (GH-24171) 
Add slots parameter to dataclass decorator and make_dataclass function.
 2021-04-30 22:14:30 -04:00
Eric V. Smith c0280532dc
Add keyword-only fields to dataclasses. (GH=25608) 2021-04-25 20:42:39 -04:00
Pablo Galindo b0544ba77c
bpo-38605: Revert making 'from __future__ import annotations' the default (GH-25490) 
This reverts commits 044a1048ca and 1be456ae9d, adapting the code to changes that happened after it.
 2021-04-21 12:41:19 +01:00
Eric V. Smith 76beadb8ff
Fix typo in a dataclasses comment. (GH-25454) 2021-04-17 09:53:24 -04:00
Eric V. Smith c1a66bdd6f
Remove an unnecessary copy of the 'namespace' parameter to make_dataclass(). (GH-25372) 2021-04-12 21:02:02 -04:00
Eric V. Smith 750f484752
bpo-43764: Add match_args=False parameter to dataclass decorator and to make_dataclasses function. (GH-25337) 
Add match_args=False parameter to dataclass decorator and to make_dataclass function.
 2021-04-10 21:28:42 -04:00
Brandt Bucher d92c59f486
bpo-43764: Fix `__match_args__` generation logic for dataclasses (GH-25284) 2021-04-08 12:54:34 -07:00
Iurii Kemaev 376ffc6ac4
bpo-43176: Fix processing of empty dataclasses (GH-24484) 
When a dataclass inherits from an empty base, all immutability checks are omitted. This PR fixes this and adds tests for it.

Automerge-Triggered-By: GH:ericvsmith
 2021-04-05 22:14:01 -07:00
Zackery Spytz 75220674c0
bpo-36470: Allow dataclasses.replace() to handle InitVars with default values (GH-20867) 
Co-Authored-By: Claudiu Popa <pcmanticore@gmail.com>

Automerge-Triggered-By: GH:ericvsmith
 2021-04-05 12:41:01 -07:00
Brandt Bucher 145bf269df
bpo-42128: Structural Pattern Matching (PEP 634) (GH-22917) 
Co-authored-by: Guido van Rossum <guido@python.org>
Co-authored-by: Talin <viridia@gmail.com>
Co-authored-by: Pablo Galindo <pablogsal@gmail.com>
 2021-02-26 14:51:55 -08:00
Batuhan Taskaya c7437e2c02
bpo-41747: Ensure all dataclass methods uses their parents' qualname (GH-22155) 
* bpo-41747: Ensure all dataclass methods uses their parents' qualname

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
 2020-10-21 09:49:22 -04:00
Batuhan Taskaya 044a1048ca
bpo-38605: Make 'from __future__ import annotations' the default (GH-20434) 
The hard part was making all the tests pass; there are some subtle issues here, because apparently the future import wasn't tested very thoroughly in previous Python versions.

For example, `inspect.signature()` returned type objects normally (except for forward references), but strings with the future import. We changed it to try and return type objects by calling `typing.get_type_hints()`, but fall back on returning strings if that function fails (which it may do if there are future references in the annotations that require passing in a specific namespace to resolve).
 2020-10-06 13:03:02 -07:00
Ben Avrahami bef7d299eb
bpo-41905: Add abc.update_abstractmethods() (GH-22485) 
This function recomputes `cls.__abstractmethods__`.
Also update `@dataclass` to use it.
 2020-10-06 10:40:50 -07:00
Jürgen Gmach 80526f6841
Fix typo in dataclasses module (GH-21109) 
Automerge-Triggered-By: @matrixise
 2020-06-24 03:46:52 -07:00
Ethan Smith d01628e411
bpo-39481: PEP 585 for dataclasses, mailbox, contextvars (GH-19425) 2020-04-14 16:14:15 -07:00
Yury Selivanov d219cc4180 bpo-34776: Fix dataclasses to support __future__ "annotations" mode (#9518) 2019-12-09 15:54:20 +01:00
Samuel Colvin 793cb85437 bpo-38431: Fix __repr__ method of InitVar to work with typing objects. (GH-16702) 2019-10-13 14:45:36 +03:00
Serhiy Storchaka b4d0b39a9b
bpo-38209: Simplify dataclasses.InitVar by using __class_getitem__(). (GH-16255) 2019-09-22 13:32:41 +03:00
Eric V. Smith b0f4dab873
bpo-37868: Improve is_dataclass for instances. (GH-15325) 2019-08-20 01:40:28 -04:00
Min ho Kim 96e12d5f4f Fix typos in docs, comments and test assert messages (#14872) 2019-07-21 16:12:33 -04:00
Serhiy Storchaka 2d88e63bfc
bpo-37163: Make the obj argument of dataclasses.replace() a positional-only. (GH-14390) 2019-06-26 19:07:44 +03:00
Augusto Hack 01ee12ba35 bpo-33569 Preserve type information with dataclasses.InitVar (GH-8927) 2019-06-02 22:14:48 -04:00
Serhiy Storchaka 2085bd0877
bpo-37116: Use PEP 570 syntax for positional-only parameters. (GH-13700) 2019-06-01 11:00:15 +03:00
Christopher Hunt b01786c881 bpo-35960: Fix dataclasses.field throwing away empty metadata. (GH-11815) 2019-02-12 06:50:49 -05:00
Srinivas Thatiparthy (శ్రీనివాస్ తాటిపర్తి) dd13c88b53 bpo-33947: dataclasses no longer can raise RecursionError in repr (GF9916) 
The reprlib code was copied here instead of importing reprlib. I'm not sure if we really need to avoid the import, but since I expect dataclasses to be more common that reprlib, it seems wise. Plus, the code is small.
 2018-10-19 12:54:50 -04:00
Eric V. Smith 9b9d97dd13
bpo-34363: dataclasses.asdict() and .astuple() now handle fields which are namedtuples. (GH-9151) 2018-09-14 11:32:16 -04:00
Vadim Pushtaev 4d12e4dc28 bpo-34213: Allow dataclasses to work with a field named 'object'. (GH-8452) 2018-08-12 07:46:05 -04:00
Artjom e55ca3fdcb Fix typo in dataclasses documentation (GH-8102) 2018-07-05 19:09:13 -04:00
Dong-hee Na 3d70f7aef6 bpo-33805: Improve error message of dataclasses.replace() (GH-7580) 2018-06-23 10:46:32 -04:00
Eric V. Smith e7adf2ba41
bpo-33796: Ignore ClassVar for dataclasses.replace(). (GH-7488) 2018-06-07 14:43:59 -04:00
Eric V. Smith 4e81296b18
bpo-33536: Validate make_dataclass() field names. (GH-6906) 2018-05-16 11:31:29 -04:00
Eric V. Smith 9285835a05
bpo-33534: Remove unneeded test. (GH-6897) 
This condition as already tested before this code is called.
 2018-05-16 07:24:00 -04:00
Eric V. Smith f8e7549490
Reflow dataclasses comments (GH-6893) 
To be more consistent with other code (and so people stop hassling me!), reflow the dataclasses comments to not use a single space indentation when continuing a paragraph of text.
 2018-05-16 05:14:53 -04:00
Eric V. Smith 2a7bacbd91
bpo-33453: Handle string type annotations in dataclasses. (GH-6768) 2018-05-15 22:44:27 -04:00
Eric V. Smith 01abc6ec3a
bpo-33517: dataclasses: Add the field type to Field repr (GH-6858) 2018-05-15 08:36:21 -04:00
Eric V. Smith 3059042410
bpo-33502: dataclass._Dataclassparams repr: use repr of each member. (GH-6812) 2018-05-14 17:16:52 -04:00
Eric V. Smith 2473eea65d
bpo-33494: Change dataclasses.Fields repr to use the repr of each of its members (GH-6798) 2018-05-14 11:37:28 -04:00
Ivan Levkivskyi 5a7092de12
Allow dynamic creation of generic dataclasses (GH-6319) 2018-03-31 13:41:17 +01:00
Eric V. Smith 521995205a
bpo-33175: dataclasses should look up __set_name__ on class, not instance (GH-6305) 2018-03-29 11:07:48 -04:00
Eric V. Smith de7a2f04d6
bpo-33141: Have dataclasses.Field pass through __set_name__ to any default argument. (GH-6260) 
This is part of PEP 487 and the descriptor protocol.
 2018-03-26 13:29:16 -04:00
Eric V. Smith 01d618c560
bpo-33134: dataclasses: use function dispatch table for hash, instead of a string lookup which then is tested with if tests. (GH-6222) 
* Change _hash_action to be a function table lookup, instead of a list
of strings which is then tested with if statements.
 2018-03-24 22:10:14 -04:00
Eric V. Smith f96ddade00
Trivial dataclass cleanups: (GH-6218) 
- When adding a single element to a list, use .append() instead of
  += and creating a new list.
- For consistency, import the copy module, instead of just deepcopy. This
  leaves only a module at the class level, instead of a function.
- Improve some comments.
- Improve some whitespace.
- Use tuples instead of lists.
- Simplify a test.
 2018-03-24 17:20:26 -04:00
Eric V. Smith 56970b8ce9
bpo-32505: dataclasses: raise TypeError if a member variable is of type Field, but doesn't have a type annotation. (GH-6192) 
If a dataclass has a member variable that's of type Field, but it doesn't have a type annotation, raise TypeError.
 2018-03-22 16:28:48 -04:00