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structures 2.0.2

User-friendly library for creating data structures.

The structures package is a library for creating data structures with type controling and casting. There is wide enough set of data types and a convenient method of designing of new. The structures are similar to the basicproperty but more user-friendly and readable.

The full documentation can be found there: http://zzzsochi.github.com/structures/

Source code placed on github.

Python 3

Version >= 2.0 only for python 3!

For python 2 you must install structures<2.

Documentation writed for python 3.

Concept

All the structures are created from the class inheritance Structure:

>>> from structures import Structure
>>> class S(Structure):
...     attr = 10
...
>>> s = S()
>>> s.attr
10
>>> s.attr = 'string'
>>> s.attr
'string'

Structures can inherit from other structures.

Types of attributes

>>> from structures import *
>>> class S(Structure):
...     i = Integer
...     s = String('string')  # setting default value
...
>>> s = S()
>>> s.s
'string'
>>> s.i
Traceback (most recent call last):
 ...
AttributeError: i

Now, if you assign a values to attributes s and i it will be automatically cast to the appropriate types.

>>> s.i = '13'
>>> type(s.i), s.i
(<type 'int'>, 13)
>>> s.s = 3.14
>>> type(s.s), s.s
(<type 'str'>, u'3.14')
>>> s.i = 'not a number'
Traceback (most recent call last):
 ...
ValueError: invalid literal for int() with base 10: 'not a number'

Structure can contain other structures

>>> from structures import *
>>> class S(Structure):
...     class s(Structure):
...         i = Integer(13)
...     f = Float(3.14)
...     d = Decimal('8.62')
...
>>> s = S()
>>> isinstance(s.s, Structure)
True
>>> s.s.i
13
>>> s.s.i = 9.18
>>> s.s.i
9
 
File Type Py Version Uploaded on Size
structures-2.0.2.tar.bz2 (md5) Source 2014-03-17 10KB