Acquisition 2.13.7 / 4.0 Alpha 1

Zope implements acquisition with "Extension Class" mix-in classes. To use acquisition your classes must inherit from an acquisition base class. For example:

>>> import ExtensionClass, Acquisition

>>> class C(ExtensionClass.Base):
... color='red'

>>> class A(Acquisition.Implicit):
... def report(self):
... print self.color
...
>>> a = A()
>>> c = C()
>>> c.a = a

>>> c.a.report()
red

>>> d = C()
>>> d.color = 'green'
>>> d.a = a

>>> d.a.report()
green

>>> a.report() # raises an attribute error
Traceback (most recent call last):
 ...
AttributeError: color

The class A inherits acquisition behavior from Acquisition.Implicit. The object, a, "has" the color of objects c and d when it is accessed through them, but it has no color by itself. The object a obtains attributes from its environment, where its environment is defined by the access path used to reach a.

Requirements:
Ссылка: http://pypi.pyt..s/source/A/Acquisition/Acquisition-4.0a1.zip#md5=8f235a8ac85f205a8a1ee4bb3de78b26