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Project Description

This library works with python 2.6, 2.7 and 3.2.

It defines three kinds of mutables.

dot

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

eg:

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

readonly

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

eg:

>>  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

eg:

from supermutes.decorators import return_readonly

@return_readonly
def get_list():
    return ['12']

OrderedDefaultDict

The ordered module contains the OrderedDefaultDict class. It is an implementation that is meant to be the child of an OrderedDict and a defaultdict from the python standard library.

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

eg:

>>> from supermutes.dot 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 'supermutes.dot.DotDict'>

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 example.py for a working sample.

Building

After cloning the repo:

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

supermutes has a build job at http://travis-ci.org/alexcouper/supermutes

Release History

Release History

0.2.5

This version

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0.2.4

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0.2.3

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0.2.2

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0.2.1

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0.2.0

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0.1.7

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0.1.6

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0.1.5

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0.1.4

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0.1.3

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Download Files

Download Files

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File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
supermutes-0.2.5.tar.gz (5.3 kB) Copy SHA256 Checksum SHA256 Source May 7, 2014

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