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| | i ƒ } | i t i | ƒ d j d ƒ ~ ~ ~ ~ | i t i | ƒ d j d ƒ | i t i d ƒ d j d ƒ d S( Ni s* got wrong number of weak reference objectsi i sA weak reference objects not unlinked from referent when discarded.i s2 got wrong number of weak reference objects for int(
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ƒ ƒ d S( Ni s& wrong number of weak references to %r!s# wrong object returned by weak dict!s. cloning of weak-keyed dictionary did not work!i s/ deleting object did not cause dictionary updates. deleting the keys did not clear the dictionaryi* s$ What is the meaning of the universe?i" ( R t make_weak_keyed_dictRª R« R R R R+ R¦ R¬ R R® R¯ t setR7 R± RB t has_key( R R¯ R R R« Rª ( ( R t test_weak_keysä s.
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ƒ D] } | i | ƒ q« W| i t | ƒ d j d ƒ | i ƒ } x! | i ƒ D] } | i | ƒ q÷ W| i t | ƒ d j d ƒ d S( Ni s# iteritems() did not touch all itemss! __iter__() did not touch all keyss! iterkeys() did not touch all keyss% itervalues() did not touch all values( Rª R¬ t iteritemst itemR^ R R R7 t keysR] t iterkeyst valuest
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mapping_testst WeakValueDictionaryTestCasec B sS t Z d Z h d e d ƒ <d e d ƒ <d e d ƒ <Z e i Z d „ Z RS( s? Check that WeakValueDictionary conforms to the mapping protocolRÌ i RÎ i t key3i c C s
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_referenceâ s ( R R t __doc__RB Rñ R R² t type2testRò ( ( ( R Rï Þ s 3 t WeakKeyDictionaryTestCasec B sS t Z d Z h e d ƒ d <e d ƒ d <e d ƒ d <Z e i Z d „ Z RS( s= Check that WeakKeyDictionary conforms to the mapping protocolRÌ i RÎ i Rð i c C s
| i i ƒ S( N( R t _WeakKeyDictionaryTestCase__refR® ( R ( ( R Rò é s ( R R Ró RB Rö R RÄ Rô Rò ( ( ( R Rõ å s 3 sà Doctest for examples in the library reference: libweakref.tex
>>> import weakref
>>> class Dict(dict):
... pass
...
>>> obj = Dict(red=1, green=2, blue=3) # this object is weak referencable
>>> r = weakref.ref(obj)
>>> print r() is obj
True
>>> import weakref
>>> class Object:
... pass
...
>>> o = Object()
>>> r = weakref.ref(o)
>>> o2 = r()
>>> o is o2
True
>>> del o, o2
>>> print r()
None
>>> import weakref
>>> class ExtendedRef(weakref.ref):
... def __init__(self, ob, callback=None, **annotations):
... super(ExtendedRef, self).__init__(ob, callback)
... self.__counter = 0
... for k, v in annotations.iteritems():
... setattr(self, k, v)
... def __call__(self):
... '''Return a pair containing the referent and the number of
... times the reference has been called.
... '''
... ob = super(ExtendedRef, self).__call__()
... if ob is not None:
... self.__counter += 1
... ob = (ob, self.__counter)
... return ob
...
>>> class A: # not in docs from here, just testing the ExtendedRef
... pass
...
>>> a = A()
>>> r = ExtendedRef(a, foo=1, bar="baz")
>>> r.foo
1
>>> r.bar
'baz'
>>> r()[1]
1
>>> r()[1]
2
>>> r()[0] is a
True
>>> import weakref
>>> _id2obj_dict = weakref.WeakValueDictionary()
>>> def remember(obj):
... oid = id(obj)
... _id2obj_dict[oid] = obj
... return oid
...
>>> def id2obj(oid):
... return _id2obj_dict[oid]
...
>>> a = A() # from here, just testing
>>> a_id = remember(a)
>>> id2obj(a_id) is a
True
>>> del a
>>> try:
... id2obj(a_id)
... except KeyError:
... print 'OK'
... else:
... print 'WeakValueDictionary error'
OK
t
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