zope.interface.interface.SpecificationBasePy

Package zope :: Package interface :: Module interface :: Class SpecificationBasePy

[show private | hide private]

Type SpecificationBasePy

object --+
         |
        SpecificationBasePy

Known Subclasses:: Specification

Method Summary
	`implementedBy(self, cls)` Do instances of the given class implement the interface?
	`isOrExtends(self, interface)` Is the interface the same as or extend the given interface
	`providedBy(self, ob)` Is the interface implemented by an object
Inherited from object
	`__init__(...)` x.__init__(...) initializes x; see x.__class__.__doc__ for signature
	`__delattr__(...)` x.__delattr__('name') <==> del x.name
	`__getattribute__(...)` x.__getattribute__('name') <==> x.name
	`__hash__(x)` x.__hash__() <==> hash(x)
	`__new__(T, S, ...)` T.__new__(S, ...) -> a new object with type S, a subtype of T
	`__reduce__(...)` helper for pickle
	`__reduce_ex__(...)` helper for pickle
	`__repr__(x)` x.__repr__() <==> repr(x)
	`__setattr__(...)` x.__setattr__('name', value) <==> x.name = value
	`__str__(x)` x.__str__() <==> str(x)

Class Variable Summary
`Implements`	`__implemented__` = `<implementedBy zope.interface.interfac...`
`ClassProvides`	`__providedBy__` = `<zope.interface.declarations.ClassProvi...`
`ClassProvides`	`__provides__` = `<zope.interface.declarations.ClassProvide...`

Method Details

implementedBy(self, cls)

Do instances of the given class implement the interface?

isOrExtends(self, interface)

Is the interface the same as or extend the given interface

Examples:

 >>> from zope.interface import Interface
 >>> from zope.interface.declarations import Declaration
 >>> class I1(Interface): pass
 ...
 >>> class I2(I1): pass
 ...
 >>> class I3(Interface): pass
 ...
 >>> class I4(I3): pass
 ...
 >>> spec = Declaration()
 >>> int(spec.extends(Interface))
 0
 >>> spec = Declaration(I2)
 >>> int(spec.extends(Interface))
 1
 >>> int(spec.extends(I1))
 1
 >>> int(spec.extends(I2))
 1
 >>> int(spec.extends(I3))
 0
 >>> int(spec.extends(I4))
 0

providedBy(self, ob)

Is the interface implemented by an object

>>> from zope.interface import *
>>> class I1(Interface):
...     pass
>>> class C(object):
...     implements(I1)
>>> c = C()
>>> class X(object):
...     pass
>>> x = X()
>>> I1.providedBy(x)
False

>>> I1.providedBy(C)
False

>>> I1.providedBy(c)
True

>>> directlyProvides(x, I1)
>>> I1.providedBy(x)
True

>>> directlyProvides(C, I1)
>>> I1.providedBy(C)
True

Class Variable Details

implemented

Type:: Implements
Value:: <implementedBy zope.interface.interface.SpecificationBasePy>

providedBy

Type:: ClassProvides
Value:: <zope.interface.declarations.ClassProvides object at 0xb7e1fdec>

provides

Type:: ClassProvides
Value:: <zope.interface.declarations.ClassProvides object at 0xb7e1fdec>

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