mirror of
https://github.com/thegeeklab/ansible-later.git
synced 2024-11-23 13:20:41 +00:00
250 lines
10 KiB
Plaintext
250 lines
10 KiB
Plaintext
Metadata-Version: 2.1
|
||
Name: attrs
|
||
Version: 19.1.0
|
||
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: Bug Tracker, https://github.com/python-attrs/attrs/issues
|
||
Project-URL: Source Code, https://github.com/python-attrs/attrs
|
||
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 :: 3.4
|
||
Classifier: Programming Language :: Python :: 3.5
|
||
Classifier: Programming Language :: Python :: 3.6
|
||
Classifier: Programming Language :: Python :: 3.7
|
||
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.*
|
||
Provides-Extra: dev
|
||
Requires-Dist: coverage ; extra == 'dev'
|
||
Requires-Dist: hypothesis ; extra == 'dev'
|
||
Requires-Dist: pympler ; extra == 'dev'
|
||
Requires-Dist: pytest ; extra == 'dev'
|
||
Requires-Dist: six ; extra == 'dev'
|
||
Requires-Dist: zope.interface ; extra == 'dev'
|
||
Requires-Dist: sphinx ; extra == 'dev'
|
||
Requires-Dist: pre-commit ; extra == 'dev'
|
||
Provides-Extra: docs
|
||
Requires-Dist: sphinx ; extra == 'docs'
|
||
Requires-Dist: zope.interface ; extra == 'docs'
|
||
Provides-Extra: tests
|
||
Requires-Dist: coverage ; extra == 'tests'
|
||
Requires-Dist: hypothesis ; extra == 'tests'
|
||
Requires-Dist: pympler ; extra == 'tests'
|
||
Requires-Dist: pytest ; extra == 'tests'
|
||
Requires-Dist: six ; extra == 'tests'
|
||
Requires-Dist: zope.interface ; extra == 'tests'
|
||
|
||
.. image:: https://www.attrs.org/en/latest/_static/attrs_logo.png
|
||
:alt: attrs Logo
|
||
|
||
======================================
|
||
``attrs``: Classes Without Boilerplate
|
||
======================================
|
||
|
||
.. image:: https://readthedocs.org/projects/attrs/badge/?version=stable
|
||
:target: https://www.attrs.org/en/stable/?badge=stable
|
||
:alt: Documentation Status
|
||
|
||
.. image:: https://travis-ci.org/python-attrs/attrs.svg?branch=master
|
||
:target: https://travis-ci.org/python-attrs/attrs
|
||
:alt: CI Status
|
||
|
||
.. image:: https://codecov.io/github/python-attrs/attrs/branch/master/graph/badge.svg
|
||
:target: https://codecov.io/github/python-attrs/attrs
|
||
:alt: Test Coverage
|
||
|
||
.. image:: https://img.shields.io/badge/code%20style-black-000000.svg
|
||
:target: https://github.com/ambv/black
|
||
:alt: Code style: black
|
||
|
||
.. teaser-begin
|
||
|
||
``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 <https://nedbatchelder.com/blog/200605/dunder.html>`_ methods).
|
||
|
||
Its main goal is to help you to write **concise** and **correct** software without slowing down your code.
|
||
|
||
.. -spiel-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
|
||
|
||
>>> import attr
|
||
|
||
>>> @attr.s
|
||
... class SomeClass(object):
|
||
... a_number = attr.ib(default=42)
|
||
... list_of_numbers = attr.ib(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
|
||
|
||
>>> attr.asdict(sc)
|
||
{'a_number': 1, 'list_of_numbers': [1, 2, 3]}
|
||
|
||
>>> SomeClass()
|
||
SomeClass(a_number=42, list_of_numbers=[])
|
||
|
||
>>> C = attr.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 complete set of comparison methods,
|
||
- an initializer,
|
||
- and much more,
|
||
|
||
*without* writing dull boilerplate code again and again and *without* runtime performance penalties.
|
||
|
||
On Python 3.6 and later, you can often even drop the calls to ``attr.ib()`` by using `type annotations <https://www.attrs.org/en/latest/types.html>`_.
|
||
|
||
This gives you the power to use actual classes with actual types in your code instead of confusing ``tuple``\ s or `confusingly behaving <https://www.attrs.org/en/stable/why.html#namedtuples>`_ ``namedtuple``\ s.
|
||
Which in turn encourages you to write *small classes* that do `one thing well <https://www.destroyallsoftware.com/talks/boundaries>`_.
|
||
Never again violate the `single responsibility principle <https://en.wikipedia.org/wiki/Single_responsibility_principle>`_ just because implementing ``__init__`` et al is a painful drag.
|
||
|
||
|
||
.. -testimonials-
|
||
|
||
Testimonials
|
||
============
|
||
|
||
**Amber Hawkie Brown**, Twisted Release Manager and Computer Owl:
|
||
|
||
Writing a fully-functional class using attrs takes me less time than writing this testimonial.
|
||
|
||
|
||
**Glyph Lefkowitz**, creator of `Twisted <https://twistedmatrix.com/>`_, `Automat <https://pypi.org/project/Automat/>`_, and other open source software, in `The One Python Library Everyone Needs <https://glyph.twistedmatrix.com/2016/08/attrs.html>`_:
|
||
|
||
I’m looking forward to is being able to program in Python-with-attrs everywhere.
|
||
It exerts a subtle, but positive, design influence in all the codebases I’ve see it used in.
|
||
|
||
|
||
**Kenneth Reitz**, author of `Requests <http://www.python-requests.org/>`_ and Developer Advocate at DigitalOcean, (`on paper no less <https://twitter.com/hynek/status/866817877650751488>`_!):
|
||
|
||
attrs—classes for humans. I like it.
|
||
|
||
|
||
**Łukasz Langa**, prolific CPython core developer and Production Engineer at Facebook:
|
||
|
||
I'm increasingly digging your attr.ocity. Good job!
|
||
|
||
|
||
.. -end-
|
||
|
||
.. -project-information-
|
||
|
||
Getting Help
|
||
============
|
||
|
||
Please use the ``python-attrs`` tag on `StackOverflow <https://stackoverflow.com/questions/tagged/python-attrs>`_ to get help.
|
||
|
||
Answering questions of your fellow developers is also great way to help the project!
|
||
|
||
|
||
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, 3.4+, 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://www.attrs.org/en/latest/contributing.html>`_ to get you started!
|
||
|
||
|
||
Release Information
|
||
===================
|
||
|
||
19.1.0 (2019-03-03)
|
||
-------------------
|
||
|
||
Backward-incompatible Changes
|
||
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||
|
||
- Fixed a bug where deserialized objects with ``cache_hash=True`` could have incorrect hash code values.
|
||
This change breaks classes with ``cache_hash=True`` when a custom ``__setstate__`` is present.
|
||
An exception will be thrown when applying the ``attrs`` annotation to such a class.
|
||
This limitation is tracked in issue `#494 <https://github.com/python-attrs/attrs/issues/494>`_.
|
||
`#482 <https://github.com/python-attrs/attrs/issues/482>`_
|
||
|
||
|
||
Changes
|
||
^^^^^^^
|
||
|
||
- Add ``is_callable``, ``deep_iterable``, and ``deep_mapping`` validators.
|
||
|
||
* ``is_callable``: validates that a value is callable
|
||
* ``deep_iterable``: Allows recursion down into an iterable,
|
||
applying another validator to every member in the iterable
|
||
as well as applying an optional validator to the iterable itself.
|
||
* ``deep_mapping``: Allows recursion down into the items in a mapping object,
|
||
applying a key validator and a value validator to the key and value in every item.
|
||
Also applies an optional validator to the mapping object itself.
|
||
|
||
You can find them in the ``attr.validators`` package.
|
||
`#425 <https://github.com/python-attrs/attrs/issues/425>`_
|
||
- Fixed stub files to prevent errors raised by mypy's ``disallow_any_generics = True`` option.
|
||
`#443 <https://github.com/python-attrs/attrs/issues/443>`_
|
||
- Attributes with ``init=False`` now can follow after ``kw_only=True`` attributes.
|
||
`#450 <https://github.com/python-attrs/attrs/issues/450>`_
|
||
- ``attrs`` now has first class support for defining exception classes.
|
||
|
||
If you define a class using ``@attr.s(auto_exc=True)`` and subclass an exception, the class will behave like a well-behaved exception class including an appropriate ``__str__`` method, and all attributes additionally available in an ``args`` attribute.
|
||
`#500 <https://github.com/python-attrs/attrs/issues/500>`_
|
||
- Clarified documentation for hashing to warn that hashable objects should be deeply immutable (in their usage, even if this is not enforced).
|
||
`#503 <https://github.com/python-attrs/attrs/issues/503>`_
|
||
|
||
`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?
|
||
|
||
|