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CHANGES.txt
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CHANGES.txt
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Traits CHANGELOG
================
Release 4.6.0
-------------
This is an incremental release over 4.5, accumulating over a year's worth of
bugfixes and small improvements to the code.
Highlights of this release include:
* support for Python 3.4 and 3.5.
* new Bytes and ValidatedTuple traits.
* a new ArrayOrNone trait which correctly handles None comparisons with Numpy
arrays.
* clean-up of the ETSConfig code for TraitsUI toolkit selection.
* better compatibility with NumPy scalar types.
* many other bugfixes and improvements.
Change summary since 4.5.0
~~~~~~~~~~~~~~~~~~~~~~~~~~
Enhancements
* Added a ``Bytes`` Trait and related traits (#329)
* Added support for finding resources from zipped Python source code (#316)
* Added in-place set arithmetic operations for ``TraitSetObject``s and accept
match behaviour of ``TraitSetObject`` with regular Python sets when
performing operations with non-set types (eg. lists, dictionaries) (#289)
* Added a context manager to allow provisional selection of a toolkit to
``ETSConfig`` (this generally improves reliability of toolkit selection
for Pyface and TraitsUI). (#276)
* Added Trait change recorder to aid in debugging event-driven code. (#139)
* ``__iadd__`` and ``__imul__`` implemented on TraitListObjects. (#165)
* Added new ``ArrayOrNone`` trait type to replace the
``Either(None, Array)`` idiom. The old idiom results in warnings
on NumPy >= 1.9. (#219)
* Added a new ``ValidatedTuple`` trait that supports custom validation. (#205)
Changes
* Removed redundant, internal ``ETSConfig`` from Traits codebase. (#327)
* Better error reporting for failed attribute access. (#243)
* Removed buggy ``-toolkit`` commandline option ``ETSConfig``. (#326)
* Removed buggy ``*names`` positional arguments from ``on_trait_change``
decorator in improved argument passing (#207).
* Allow ``Float`` and ``BaseFloat`` traits to accept Python longs. (#272)
* Clean-up and fixes to example code. (#126)
* Remove outdated ``ImportSpy`` and ``ImportManager`` utilities. (#188)
* The ``deprecated`` decorator now issues a DeprecationWarning (using
the Python ``warnings`` module) rather than logging a warning via
the ``logging`` machinery. It no longer tries to remember when
a warning has been previously issued. (#220)
* Deprecated ``HasTraits.get()`` and ``HasTraits.set()`` (#190).
* The default ``View`` shows all (non-event) traits whose ``visible`` property
is not ``False``. Private traits are set ``visible=False`` by default. (#234)
Fixes
* Fix Bool traits so that value stored is always a Python ``bool`` (and in
particular, not a NumPy ``np.bool_``). (#318)
* Fix Bool traits so that regular validator accepts NumpPy's ``np.bool_``
boolean values (bringing it in agreement with the fast validator). (#302)
* Fix use of ``next`` in ``TraitDocumenter`` for Python 3 compatibility. (#293)
* Fix off-by-one error when ``TraitListObject`` is setting or deleting slices.
(#283)
* Fix reference cycles caused by ``sync_traits``. (#135)
* Fix so that ``sys.exc_info()`` works as expected in exception handlers in
Python 3 (#266)
* Fix ``String`` trait to accept ``str`` subclasses (like ``numpy.str_``).
(#267)
* Fixed incorrect in list events for ``insert`` operations with an index
outside the range [``-len(target_list)``, ``len(target_list)``]. (#165)
* Fix incorrect behaviour of ``check_implements`` for overridden methods.
(#192)
* Fix error when trying to listen to traits using list bracket notation. (#195)
* Fix reference leak in ``CHasTraits._notifiers``. (#248)
* Fix reference leak from use of ``DelegatesTo``. (#260)
* Instance traits weren't included in the result of ``traits()``. (#234)
Release 4.5.0
-------------
Traits is now compatible with Python 3! The library now supports
Python 3.2 and 3.3.
The release also includes increased code coverage and automatic
coverage report through coveralls.io.
Change summary since 4.4.0
~~~~~~~~~~~~~~~~~~~~~~~~~~
Enhancements
* Test files cleanups (#108, #111, #121)
* Add automatic coverage reports (#110, #122)
* Removed obsolete code (#109, #112, #113)
* Increased test coverage (#114, #118)
* Python 3 support (#115). Thanks Yves Delley.
* Allow setting and resetting the global adaptation manager (#145)
* Various documentation improvements (#132, #133, #148, #154).
Changes
* The Int trait type now accepts Python ints *and* Python longs, as well as
instances of any Python type that implements the ``__index__`` method.
Previously, long instances were not accepted. (#104, #123).
Fixes
* Fix crash when trying to validate a property that has been deleted. (#138)
* Fix clearing exception when raising a TraitError (#119)
* Fix automatic adaptation when assigning to List trait (#147)
* Fix some ctraits refcounting and exception clearing bugs (#48). Thanks Yves
Delley.
Release 4.4.0
-------------
The major new feature in this release is a new adaptation mechanism in the
``traits.adaptation`` package. The new mechanism is intended to replace the
older traits.protocols package. Code written against ``traits.protocols`` will
continue to work, although the ``traits.protocols`` API has been deprecated,
and a warning will be logged on first use of ``traits.protocols``. See the
'Advanced Topics' section of the user manual for more details.
The release also includes improved support for using Cython with ``HasTraits``
classes, some new helper utilities for writing unit tests for Traits events,
and a variety of bug fixes, stability enhancements, and internal code
improvements.
Change summary since 4.3.0
~~~~~~~~~~~~~~~~~~~~~~~~~~
New features
* The adaptation mechanism in Traits, formerly based on the 'traits.protocols'
package, has been replaced with the more robust 'traits.adaptation'
package. (#51)
* Added utility function for importing symbols (name, classes, functions)
by name: 'traits.util.api.import_symbol'. (#51)
* Users can set a global tracer, which receives all traits change events:
``traits.trait_notifiers.set_change_event_tracers``. (#79)
Enhancements
* Update benchmark script. (#54)
* traits.util.deprecated: use module logger instead of root logger. (#59)
* Provide an informative message in AdaptationError. (#62)
* Allow HasTraits classes to be cythonized. (#73)
* Improve tests for cythonization support. (#75)
* Extending various trait testing helpers (#53)
Refactoring
* The Traits notification code has been reworked to remove code duplication,
and test coverage of that code has been significantly improved. (#79)
Fixes
* Fix race condition when removing a traits listener. (#57)
* Fix ugly interaction between DelegatesTo change handlers, dynamic change
handlers and two levels of dynamic intialization. (#63)
* Use a NullHandler for all 'traits' loggers. (#64)
* Fix race condition in TraitChangeNotifyWrapper.listener_deleted (#66)
* Fix leaking notifiers. (#68)
* Fix failing special instance trait events. (#78)
* Fix hiding KeyError exception inside trait default initialize method.
(#81)
* Fix Adapter object initialization. (#93)
* Fix cyclic garbage arising from use of the WeakRef trait type. (#95)
* ``TraitSetObject.copy`` now returns a plain rather than an
uninitialized ``TraitSetObject`` instance. (#97)
* Fix cyclic garbage arising from dynamic trait change handlers. (#101)