zodict 1.4.1

zodict

Ordered dictionary which implements the corresponding zope.interface.common.mapping interface.:

>>> from zope.interface.common.mapping import IFullMapping
>>> from zodict import zodict
>>> zod = zodict()
>>> IFullMapping.providedBy(zod)
True

Node

This is a zodict which provides a location. Location the zope way means each item in the node-tree knows its parent and its own name.:

>>> from zope.location.interface import ILocation
>>> from zodict.node import Node
>>> root = Node('root')
>>> ILocation.providedBy(Node)
True

>>> root['child'] = Node()
>>> root['child'].path
['root', 'child']

>>> child = root['child']
>>> child.__name__
'child'

>>> child.__parent__
<Node object 'root' at ...>

The filtereditems function.:

>>> from zope.interface import Interface
>>> from zope.interface import alsoProvides
>>> class IMarker(Interface): pass
>>> alsoProvides(root['child']['subchild'], IMarker)
>>> IMarker.providedBy(root['child']['subchild'])
True

>>> for item in root['child'].filtereditems(IMarker):
...     print item.path
['root', 'child', 'subchild']

UUID related operations on Node.:

>>> uuid = root['child']['subchild'].uuid
>>> uuid
UUID('...')

>>> root.node(uuid).path
['root', 'child', 'subchild']

>>> root.uuid = uuid
Traceback (most recent call last):
  ...
ValueError: Given uuid was already used for another Node

>>> import uuid
>>> newuuid = uuid.uuid4()

>>> root.uuid = newuuid
>>> root['child'].node(newuuid).path
['root']

>>> root.uuid = object()
Traceback (most recent call last):
  ...
AssertionError: arg <object object at ...> does not match <class 'uuid.UUID'>

Changes

Credits

-Written by Robert Niederreiter <rnix@squarewave.at> (2009-03-17)