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Name: traits
Version: 4.6.0
Summary: explicitly typed attributes for Python
Home-page: http://docs.enthought.com/traits
Author: ETS Developers
Author-email: enthought-dev@enthought.com
License: BSD
Download-URL: https://github.com/enthought/traits
Description: ==============================================
traits: explicitly typed attributes for Python
==============================================
http://docs.enthought.com/traits
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The Traits project is at the center of all Enthought Tool Suite development
and has changed the mental model used at Enthought for programming in the
already extremely efficient Python programming language. We encourage everyone
to join us in enjoying the productivity gains from using such a powerful
approach.
The Traits project allows Python programmers to use a special kind of type
definition called a *trait*, which gives object attributes some additional
characteristics:
- **Initialization**: A trait has a *default value*, which is
automatically set as the initial value of an attribute before its
first use in a program.
- **Validation**: The type of a trait attribute is *explicitly declared*. The
type is evident in the code, and only values that meet a
programmer-specified set of criteria (i.e., the trait definition) can
be assigned to that attribute.
- **Delegation**: The value of a trait attribute can be contained either
in the defining object or in another object *delegated* to by the
trait.
- **Notification**: Setting the value of a trait attribute can *notify*
other parts of the program that the value has changed.
- **Visualization**: User interfaces that allow a user to *interactively
modify* the value of a trait attribute can be automatically
constructed using the trait's definition. (This feature requires that
a supported GUI toolkit be installed. If this feature is not used, the
Traits project does not otherwise require GUI support.)
A class can freely mix trait-based attributes with normal Python attributes,
or can opt to allow the use of only a fixed or open set of trait attributes
within the class. Trait attributes defined by a class are automatically
inherited by any subclass derived from the class.
Dependencies
------------
Traits has the following optional dependencies:
* `NumPy <http://pypi.python.org/pypi/numpy>`_ to support the trait types
for arrays.
* `Traitsui <https://pypi.python.org/pypi/traitsui>`_ to support Gui
Views.
To build the full documentation one needs:
* sphinx > 1.2.3
* mock (optional if traitsui is not available)
Platform: Windows
Platform: Linux
Platform: Mac OS-X
Platform: Unix
Platform: Solaris
Classifier: Development Status :: 5 - Production/Stable
Classifier: Intended Audience :: Developers
Classifier: Intended Audience :: Science/Research
Classifier: License :: OSI Approved :: BSD License
Classifier: Operating System :: MacOS
Classifier: Operating System :: Microsoft :: Windows
Classifier: Operating System :: OS Independent
Classifier: Operating System :: POSIX
Classifier: Operating System :: Unix
Classifier: Programming Language :: C
Classifier: Programming Language :: Python
Classifier: Topic :: Scientific/Engineering
Classifier: Topic :: Software Development
Classifier: Topic :: Software Development :: Libraries
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