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t o2( R R) R R R* ( ( R R n s c C s` d | _ | ƒ } t i | | i ƒ } ~ | i | i d j d ƒ | i | ƒ d j d ƒ d S( Ni i s( callback did not properly set 'cbcalled's3 ref2 should be dead after deleting object reference( R R R) R R R R R R
( R R) R R ( ( R R w s c C sÝ t ƒ } t i | ƒ } t i | ƒ } t i | ƒ } | i | | j d ƒ t ƒ } t i | ƒ } t i | ƒ } t i | ƒ } | i | | j d ƒ | i t i | ƒ d j d ƒ ~ | i t i | ƒ d j d ƒ d S( Ns1 reference object w/out callback should be re-usedi s wrong weak ref count for objecti s4 wrong weak ref count for object after deleting proxy(
R R R R R R# R R R t getweakrefcount( R R R R R# ( ( R t test_ref_reuse s" c C sP t ƒ } t i | ƒ } t i | ƒ } t i | ƒ } | i | | j d ƒ d S( Ns4 proxy object w/out callback should have been re-used( R R R R# t proxy1R t proxy2R R ( R R. R- R R ( ( R t test_proxy_reuse— s c C s· t ƒ } | i | t i | ƒ ƒ t i ƒ } t i | ƒ } | i | d ƒ | i
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Ni s) proxy does not reflect attribute additioni s- proxy does not reflect attribute modificationt foos( proxy does not reflect attribute removals4 object does not reflect attribute addition via proxys8 object does not reflect attribute modification via proxys3 object does not reflect attribute removal via proxy( R RI R R R# t hasattr( R R R# ( ( R R0 ñ s$ c C sI d f d „ ƒ Y} | ƒ } t i | ƒ } | d =| i | i d ƒ d S( Nt Fooc B s t Z d Z d „ Z RS( Nc C s
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c C s | i t i ƒ d S( N( R t check_gc_during_creationR R ( R ( ( R t test_gc_during_ref_creationZ s c C s | i t i ƒ d S( N( R R R R# ( R ( ( R t test_gc_during_proxy_creation] s c C s¡ t i ƒ } t i d d d ƒ t i ƒ d f d „ ƒ Y} d „ } | ƒ } | ƒ } | | _ | | ƒ | _
z | ƒ } t i | | ƒ Wd t i | Œ Xd S( Ni t Ac B s t Z RS( N( R R ( ( ( R R„ d s c G s d S( N( ( t args( ( R R g s (
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Rx R ( ( RΠ( R RΠ} s RI Rv i ( R R RΠRB R t mrR R R R6 Rv R
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| ƒ | | g ƒ | i t i | ƒ d ƒ | | ƒ } | i t i | ƒ d ƒ t i
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d ƒ | i | i ƒ d ƒ | i t
| d ƒ ƒ d S( NRŒ c B s) t Z d Z d „ Z d „ Z d „ Z RS( Nt slot1t slot2c C s t i i | | | ƒ S( N( R R t __new__RE RŽ R ( RE RŽ R R› Rœ ( ( R R ¬ s c C s | | _ | | _ d S( N( R› R Rœ ( R RŽ R R› Rœ ( ( R Rx ® s c C s | i | i S( N( R R› Rœ ( R ( ( R t meth± s ( s slot1s slot2( R R t __slots__R Rx Rž ( ( ( R RŒ ª s i* t abct deft abcdeft __dict__( R R RŒ RB R R
t rR R6 R› Rœ Rž R4 RJ ( R R R¤ RŒ ( ( R t test_subclass_refs_with_slots© s ( R R R’ R— Rš R¥ ( ( ( R R‹ z s RB c B s t Z d „ Z d „ Z RS( Nc C s
| | _ d S( N( t argR ( R R¦ ( ( R Rx ¼ s c C s d | i S( Ns <Object %r>( R R¦ ( R ( ( R t __repr__¾ s ( R R Rx R§ ( ( ( R RB » s t MappingTestCasec B sÔ t Z d Z d „ Z d „ Z d „ Z d „ Z d „ Z d „ Z d „ Z d „ Z
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c C sb | i ƒ \ } } xN | D]F } | i t i | ƒ d j d | ƒ | i | | | i j d ƒ q W| i ƒ } | i ƒ i ƒ } | i
ƒ | i
ƒ | i | | j d ƒ ~ ~ | i t | ƒ | i j ƒ | d =| i t | ƒ | i d j d ƒ ~ ~ | i t | ƒ d j d ƒ t i ƒ } | i t | i d ƒ t ƒ | d <| i t | i d ƒ d S( Ni s& wrong number of weak references to %r!s# wrong object returned by weak dict!s/ cloning of weak-valued dictionary did not work!i s/ deleting object did not cause dictionary updates0 deleting the values did not clear the dictionaryi ( R t make_weak_valued_dictt dictt objectsR R R R+ R¦ t itemst items1t copyt items2t sortR7 t COUNTt WeakValueDictionaryR% t KeyErrort __getitem__R ( R R¯ R R R« Rª ( ( R t test_weak_valuesÆ s2
c C sX | i ƒ \ } } xN | D]F } | i t i | ƒ d j d | ƒ | i | i | | j d ƒ q W| i ƒ } | i ƒ i ƒ } | i t
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| ƒ j d ƒ ~ ~ | i t | ƒ | i j ƒ | d =| i t | ƒ | i d j d ƒ ~ ~ | i t | ƒ d j d ƒ t d ƒ } d | | <| i | i | ƒ ƒ | i | i d
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.
c C s# | i ƒ \ } } | i | ƒ d S( N( R R¶ Rª R« t check_iters( R R« Rª ( ( R t test_weak_keyed_iters s c C s# | i ƒ \ } } | i | ƒ d S( N( R R© Rª R« Rº ( R R« Rª ( ( R t test_weak_valued_iters s c C s. | i ƒ } x! | i ƒ D] } | i | ƒ q W| i t | ƒ d j d ƒ | i ƒ } x | 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 | 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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c C s? t d ƒ } t i h | d <ƒ } | i | | d j ƒ d S( Ni il ( RB R R t WeakKeyDictionaryRª R R ( R Rª R ( ( R t# test_make_weak_keyed_dict_from_dict" s c C sN t d ƒ } t i h | d <ƒ } t i | ƒ } | i | | d j ƒ d S( Ni il ( RB R R RÄ Rª t dict2R R ( R RÆ R Rª ( ( R t. test_make_weak_keyed_dict_from_weak_keyed_dict' s c C sL t i ƒ } t t t | i ƒ ƒ } x | D] } | i
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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
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