233 lines
9.6 KiB
Plaintext
233 lines
9.6 KiB
Plaintext
Metadata-Version: 2.1
|
||
Name: attrs
|
||
Version: 21.4.0
|
||
Summary: Classes Without Boilerplate
|
||
Home-page: https://www.attrs.org/
|
||
Author: Hynek Schlawack
|
||
Author-email: hs@ox.cx
|
||
Maintainer: Hynek Schlawack
|
||
Maintainer-email: hs@ox.cx
|
||
License: MIT
|
||
Project-URL: Documentation, https://www.attrs.org/
|
||
Project-URL: Changelog, https://www.attrs.org/en/stable/changelog.html
|
||
Project-URL: Bug Tracker, https://github.com/python-attrs/attrs/issues
|
||
Project-URL: Source Code, https://github.com/python-attrs/attrs
|
||
Project-URL: Funding, https://github.com/sponsors/hynek
|
||
Project-URL: Tidelift, https://tidelift.com/subscription/pkg/pypi-attrs?utm_source=pypi-attrs&utm_medium=pypi
|
||
Project-URL: Ko-fi, https://ko-fi.com/the_hynek
|
||
Keywords: class,attribute,boilerplate
|
||
Platform: UNKNOWN
|
||
Classifier: Development Status :: 5 - Production/Stable
|
||
Classifier: Intended Audience :: Developers
|
||
Classifier: Natural Language :: English
|
||
Classifier: License :: OSI Approved :: MIT License
|
||
Classifier: Operating System :: OS Independent
|
||
Classifier: Programming Language :: Python
|
||
Classifier: Programming Language :: Python :: 2
|
||
Classifier: Programming Language :: Python :: 2.7
|
||
Classifier: Programming Language :: Python :: 3
|
||
Classifier: Programming Language :: Python :: 3.5
|
||
Classifier: Programming Language :: Python :: 3.6
|
||
Classifier: Programming Language :: Python :: 3.7
|
||
Classifier: Programming Language :: Python :: 3.8
|
||
Classifier: Programming Language :: Python :: 3.9
|
||
Classifier: Programming Language :: Python :: 3.10
|
||
Classifier: Programming Language :: Python :: Implementation :: CPython
|
||
Classifier: Programming Language :: Python :: Implementation :: PyPy
|
||
Classifier: Topic :: Software Development :: Libraries :: Python Modules
|
||
Requires-Python: >=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*
|
||
Description-Content-Type: text/x-rst
|
||
License-File: LICENSE
|
||
License-File: AUTHORS.rst
|
||
Provides-Extra: dev
|
||
Requires-Dist: coverage[toml] (>=5.0.2) ; extra == 'dev'
|
||
Requires-Dist: hypothesis ; extra == 'dev'
|
||
Requires-Dist: pympler ; extra == 'dev'
|
||
Requires-Dist: pytest (>=4.3.0) ; extra == 'dev'
|
||
Requires-Dist: six ; extra == 'dev'
|
||
Requires-Dist: mypy ; extra == 'dev'
|
||
Requires-Dist: pytest-mypy-plugins ; extra == 'dev'
|
||
Requires-Dist: zope.interface ; extra == 'dev'
|
||
Requires-Dist: furo ; extra == 'dev'
|
||
Requires-Dist: sphinx ; extra == 'dev'
|
||
Requires-Dist: sphinx-notfound-page ; extra == 'dev'
|
||
Requires-Dist: pre-commit ; extra == 'dev'
|
||
Requires-Dist: cloudpickle ; (platform_python_implementation == "CPython") and extra == 'dev'
|
||
Provides-Extra: docs
|
||
Requires-Dist: furo ; extra == 'docs'
|
||
Requires-Dist: sphinx ; extra == 'docs'
|
||
Requires-Dist: zope.interface ; extra == 'docs'
|
||
Requires-Dist: sphinx-notfound-page ; extra == 'docs'
|
||
Provides-Extra: tests
|
||
Requires-Dist: coverage[toml] (>=5.0.2) ; extra == 'tests'
|
||
Requires-Dist: hypothesis ; extra == 'tests'
|
||
Requires-Dist: pympler ; extra == 'tests'
|
||
Requires-Dist: pytest (>=4.3.0) ; extra == 'tests'
|
||
Requires-Dist: six ; extra == 'tests'
|
||
Requires-Dist: mypy ; extra == 'tests'
|
||
Requires-Dist: pytest-mypy-plugins ; extra == 'tests'
|
||
Requires-Dist: zope.interface ; extra == 'tests'
|
||
Requires-Dist: cloudpickle ; (platform_python_implementation == "CPython") and extra == 'tests'
|
||
Provides-Extra: tests_no_zope
|
||
Requires-Dist: coverage[toml] (>=5.0.2) ; extra == 'tests_no_zope'
|
||
Requires-Dist: hypothesis ; extra == 'tests_no_zope'
|
||
Requires-Dist: pympler ; extra == 'tests_no_zope'
|
||
Requires-Dist: pytest (>=4.3.0) ; extra == 'tests_no_zope'
|
||
Requires-Dist: six ; extra == 'tests_no_zope'
|
||
Requires-Dist: mypy ; extra == 'tests_no_zope'
|
||
Requires-Dist: pytest-mypy-plugins ; extra == 'tests_no_zope'
|
||
Requires-Dist: cloudpickle ; (platform_python_implementation == "CPython") and extra == 'tests_no_zope'
|
||
|
||
|
||
.. image:: https://www.attrs.org/en/stable/_static/attrs_logo.png
|
||
:alt: attrs logo
|
||
:align: center
|
||
|
||
|
||
``attrs`` is the Python package that will bring back the **joy** of **writing classes** by relieving you from the drudgery of implementing object protocols (aka `dunder methods <https://www.attrs.org/en/latest/glossary.html#term-dunder-methods>`_).
|
||
`Trusted by NASA <https://docs.github.com/en/account-and-profile/setting-up-and-managing-your-github-profile/customizing-your-profile/personalizing-your-profile#list-of-qualifying-repositories-for-mars-2020-helicopter-contributor-badge>`_ for Mars missions since 2020!
|
||
|
||
Its main goal is to help you to write **concise** and **correct** software without slowing down your code.
|
||
|
||
.. teaser-end
|
||
|
||
For that, it gives you a class decorator and a way to declaratively define the attributes on that class:
|
||
|
||
.. -code-begin-
|
||
|
||
.. code-block:: pycon
|
||
|
||
>>> from attrs import asdict, define, make_class, Factory
|
||
|
||
>>> @define
|
||
... class SomeClass:
|
||
... a_number: int = 42
|
||
... list_of_numbers: list[int] = Factory(list)
|
||
...
|
||
... def hard_math(self, another_number):
|
||
... return self.a_number + sum(self.list_of_numbers) * another_number
|
||
|
||
|
||
>>> sc = SomeClass(1, [1, 2, 3])
|
||
>>> sc
|
||
SomeClass(a_number=1, list_of_numbers=[1, 2, 3])
|
||
|
||
>>> sc.hard_math(3)
|
||
19
|
||
>>> sc == SomeClass(1, [1, 2, 3])
|
||
True
|
||
>>> sc != SomeClass(2, [3, 2, 1])
|
||
True
|
||
|
||
>>> asdict(sc)
|
||
{'a_number': 1, 'list_of_numbers': [1, 2, 3]}
|
||
|
||
>>> SomeClass()
|
||
SomeClass(a_number=42, list_of_numbers=[])
|
||
|
||
>>> C = make_class("C", ["a", "b"])
|
||
>>> C("foo", "bar")
|
||
C(a='foo', b='bar')
|
||
|
||
|
||
After *declaring* your attributes ``attrs`` gives you:
|
||
|
||
- a concise and explicit overview of the class's attributes,
|
||
- a nice human-readable ``__repr__``,
|
||
- a equality-checking methods,
|
||
- an initializer,
|
||
- and much more,
|
||
|
||
*without* writing dull boilerplate code again and again and *without* runtime performance penalties.
|
||
|
||
**Hate type annotations**!?
|
||
No problem!
|
||
Types are entirely **optional** with ``attrs``.
|
||
Simply assign ``attrs.field()`` to the attributes instead of annotating them with types.
|
||
|
||
----
|
||
|
||
This example uses ``attrs``'s modern APIs that have been introduced in version 20.1.0, and the ``attrs`` package import name that has been added in version 21.3.0.
|
||
The classic APIs (``@attr.s``, ``attr.ib``, plus their serious business aliases) and the ``attr`` package import name will remain **indefinitely**.
|
||
|
||
Please check out `On The Core API Names <https://www.attrs.org/en/latest/names.html>`_ for a more in-depth explanation.
|
||
|
||
|
||
Data Classes
|
||
============
|
||
|
||
On the tin, ``attrs`` might remind you of ``dataclasses`` (and indeed, ``dataclasses`` are a descendant of ``attrs``).
|
||
In practice it does a lot more and is more flexible.
|
||
For instance it allows you to define `special handling of NumPy arrays for equality checks <https://www.attrs.org/en/stable/comparison.html#customization>`_, or allows more ways to `plug into the initialization process <https://www.attrs.org/en/stable/init.html#hooking-yourself-into-initialization>`_.
|
||
|
||
For more details, please refer to our `comparison page <https://www.attrs.org/en/stable/why.html#data-classes>`_.
|
||
|
||
|
||
.. -getting-help-
|
||
|
||
Getting Help
|
||
============
|
||
|
||
Please use the ``python-attrs`` tag on `Stack Overflow <https://stackoverflow.com/questions/tagged/python-attrs>`_ to get help.
|
||
|
||
Answering questions of your fellow developers is also a great way to help the project!
|
||
|
||
|
||
.. -project-information-
|
||
|
||
Project Information
|
||
===================
|
||
|
||
``attrs`` is released under the `MIT <https://choosealicense.com/licenses/mit/>`_ license,
|
||
its documentation lives at `Read the Docs <https://www.attrs.org/>`_,
|
||
the code on `GitHub <https://github.com/python-attrs/attrs>`_,
|
||
and the latest release on `PyPI <https://pypi.org/project/attrs/>`_.
|
||
It’s rigorously tested on Python 2.7, 3.5+, and PyPy.
|
||
|
||
We collect information on **third-party extensions** in our `wiki <https://github.com/python-attrs/attrs/wiki/Extensions-to-attrs>`_.
|
||
Feel free to browse and add your own!
|
||
|
||
If you'd like to contribute to ``attrs`` you're most welcome and we've written `a little guide <https://github.com/python-attrs/attrs/blob/main/.github/CONTRIBUTING.md>`_ to get you started!
|
||
|
||
|
||
``attrs`` for Enterprise
|
||
------------------------
|
||
|
||
Available as part of the Tidelift Subscription.
|
||
|
||
The maintainers of ``attrs`` and thousands of other packages are working with Tidelift to deliver commercial support and maintenance for the open source packages you use to build your applications.
|
||
Save time, reduce risk, and improve code health, while paying the maintainers of the exact packages you use.
|
||
`Learn more. <https://tidelift.com/subscription/pkg/pypi-attrs?utm_source=pypi-attrs&utm_medium=referral&utm_campaign=enterprise&utm_term=repo>`_
|
||
|
||
|
||
Release Information
|
||
===================
|
||
|
||
21.4.0 (2021-12-29)
|
||
-------------------
|
||
|
||
Changes
|
||
^^^^^^^
|
||
|
||
- Fixed the test suite on PyPy3.8 where ``cloudpickle`` does not work.
|
||
`#892 <https://github.com/python-attrs/attrs/issues/892>`_
|
||
- Fixed ``coverage report`` for projects that use ``attrs`` and don't set a ``--source``.
|
||
`#895 <https://github.com/python-attrs/attrs/issues/895>`_,
|
||
`#896 <https://github.com/python-attrs/attrs/issues/896>`_
|
||
|
||
`Full changelog <https://www.attrs.org/en/stable/changelog.html>`_.
|
||
|
||
Credits
|
||
=======
|
||
|
||
``attrs`` is written and maintained by `Hynek Schlawack <https://hynek.me/>`_.
|
||
|
||
The development is kindly supported by `Variomedia AG <https://www.variomedia.de/>`_.
|
||
|
||
A full list of contributors can be found in `GitHub's overview <https://github.com/python-attrs/attrs/graphs/contributors>`_.
|
||
|
||
It’s the spiritual successor of `characteristic <https://characteristic.readthedocs.io/>`_ and aspires to fix some of it clunkiness and unfortunate decisions.
|
||
Both were inspired by Twisted’s `FancyEqMixin <https://twistedmatrix.com/documents/current/api/twisted.python.util.FancyEqMixin.html>`_ but both are implemented using class decorators because `subclassing is bad for you <https://www.youtube.com/watch?v=3MNVP9-hglc>`_, m’kay?
|
||
|
||
|