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A collection of super mutables

Project description


This library works with python 2.6, 2.7 and 3.2.

It defines two kinds of mutables.


The ``dot`` module contains classes that allow dot-notation to be used for
when accessing a ``list`` or ``dict`` object.


>> from import dotify
>> d = dotify({'a':[1, 2, 3, 4, 5], 'b': {'c': 5}})
>> d.a._0
>> d.b.c
>> d.c = {'f': 9}
>> d.c.f


The ``readonly`` module contains classes that transform ``dict`` and ``list``
objects into ones that cannot have any values changed on them.


>> from supermutes.readonly import readonly
>> r = readonly({'a':[1, 2, 3, 4, 5], 'b': {'c': 5}})
>> r
{'a': [1, 2, 3, 4, 5], 'b': {'c': 5}}
>> r['a'].append(5)
supermutes.readonly.ReadOnlyClassException: Cannot write to object.
>> r['b']['d'] = 6
supermutes.readonly.ReadOnlyClassException: Cannot write to object.

A decorator function is also available for readonly objects. It will
readonly-fy the output of the decorated function/method


from supermutes.decorators import return_readonly

def get_list():
return ['12']

Creating Sub Classes

Upon declaration of a sub class of any of the supermutes, that class will be
set as the defacto class for recursively changing data sets.

To reset the classes back to the original set, use the ``reset_mapping`` method
inside the module


>>> from import DotDict, DotList, reset_mapping
>>> class MySubClass(DotDict): pass
>>> d = MySubClass({'a': {'b': {'c': 3}}})
>>> d.a.b
{'c': 3}
>>> d.a.b.__class__
<class '__main__.MySubClass'>
>>> f = DotList([1, {}])
>>> f[1].__class__
<class '__main__.MySubClass'>
>>> reset_mapping()
>>> f = DotList([1, {}])
>>> f[1].__class__
<class ''>

Writing your own ``Supermutable``

If you would like to contribute, and write a supermutable that behaves in a
particular fashion, just try to follow these guidelines:

* It should inherit from the mutable type that it is adapting (eg ``dict``
``list`` etc.)
* It should also inherit from ``base.SuperMutable``. This takes care of
all of the registering of any subclasses so that for example, all sub
dicts added to the SuperMutable are changed accordingly. See
for a working sample.


After cloning the repo::

$ pip install -r test-requirements.txt
$ nosetests

``supermutes`` has a build job at

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