attrs versions available: 18.2.0

[dependencies]

There are new versions of attrs available from pypi.

18.2.0

Deprecations

• Comparing subclasses using <, >, <=, and >= is now
  deprecated. The docs always claimed that instances are only compared
  if the types are identical, so this is a first step to conform to
  the docs.

  Equality operators (== and !=) were always strict in this
  regard. #394

Changes

• attrs now ships its own PEP
  484 type hints. Together
  with mypy's attrs plugin, you've got all
  you need for writing statically typed code in both Python 2 and 3!

  At that occasion, we've also added narrative
  docs about type
  annotations in attrs.
  #238

• Added kw_only arguments to attr.ib and attr.s, and a
  corresponding kw_only attribute to attr.Attribute. This change
  makes it possible to have a generated __init__ with keyword-only
  arguments on Python 3, relaxing the required ordering of default and
  non-default valued attributes.
  #281,
  #411

• The test suite now runs with hypothesis.HealthCheck.too_slow
  disabled to prevent CI breakage on slower computers.
  #364,
  #396

• attr.validators.in_() now raises a ValueError with a useful
  message even if the options are a string and the value is not a
  string. #383

• attr.asdict() now properly handles deeply nested lists and
  dictionaries.
  #395

• Added attr.converters.default_if_none() that allows to replace
  None values in attributes. For example
  attr.ib(converter=default_if_none("")) replaces None by empty
  strings. #400,
  #414

• Fixed a reference leak where the original class would remain live
  after being replaced when slots=True is set.
  #407

• Slotted classes can now be made weakly referenceable by passing
  @attr.s(weakref_slot=True).
  #420

• Added cache_hash option to @attr.s which causes the hash code
  to be computed once and stored on the object.
  #425

• Attributes can be named property and itemgetter now.
  #430

• It is now possible to override a base class' class variable using
  only class annotations.
  #431

Full changelog.

Credits

attrs is written and maintained by Hynek
Schlawack.

The development is kindly supported by Variomedia
AG.

A full list of contributors can be found in GitHub's
overview.

It's the spiritual successor of
characteristic and aspires to
fix some of it clunkiness and unfortunate decisions. Both were inspired
by Twisted's
FancyEqMixin
but both are implemented using class decorators because subclassing is
bad for you, m'kay?