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#: ../../c-api/weakref.rst:6
msgid "Weak Reference Objects"
msgstr ""
#: ../../c-api/weakref.rst:8
msgid ""
"Python supports *weak references* as first-class objects. There are two "
"specific object types which directly implement weak references. The first "
"is a simple reference object, and the second acts as a proxy for the "
"original object as much as it can."
msgstr ""
#: ../../c-api/weakref.rst:16
msgid ""
"Return non-zero if *ob* is either a reference or proxy object. This "
"function always succeeds."
msgstr ""
#: ../../c-api/weakref.rst:22
msgid ""
"Return non-zero if *ob* is a reference object or a subclass of the reference "
"type. This function always succeeds."
msgstr ""
#: ../../c-api/weakref.rst:28
msgid ""
"Return non-zero if *ob* is a reference object, but not a subclass of the "
"reference type. This function always succeeds."
msgstr ""
#: ../../c-api/weakref.rst:34
msgid ""
"Return non-zero if *ob* is a proxy object. This function always succeeds."
msgstr ""
#: ../../c-api/weakref.rst:39
msgid ""
"Return a weak reference object for the object *ob*. This will always return "
"a new reference, but is not guaranteed to create a new object; an existing "
"reference object may be returned. The second parameter, *callback*, can be "
"a callable object that receives notification when *ob* is garbage collected; "
"it should accept a single parameter, which will be the weak reference object "
"itself. *callback* may also be ``None`` or ``NULL``. If *ob* is not a "
"weakly referenceable object, this will raise :exc:`TypeError` and return "
"``NULL``."
msgstr ""
#: ../../c-api/weakref.rst:49 ../../c-api/weakref.rst:65
msgid ""
":c:func:`PyType_SUPPORTS_WEAKREFS` for checking if *ob* is weakly "
"referenceable."
msgstr ""
#: ../../c-api/weakref.rst:55
msgid ""
"Return a weak reference proxy object for the object *ob*. This will always "
"return a new reference, but is not guaranteed to create a new object; an "
"existing proxy object may be returned. The second parameter, *callback*, "
"can be a callable object that receives notification when *ob* is garbage "
"collected; it should accept a single parameter, which will be the weak "
"reference object itself. *callback* may also be ``None`` or ``NULL``. If "
"*ob* weakly referenceable object, this will raise :exc:`TypeError` and "
"return ``NULL``."
msgstr ""
#: ../../c-api/weakref.rst:71
msgid ""
"Get a :term:`strong reference` to the referenced object from a weak "
"reference, *ref*, into *\\*pobj*."
msgstr ""
#: ../../c-api/weakref.rst:74
msgid ""
"On success, set *\\*pobj* to a new :term:`strong reference` to the "
"referenced object and return 1."
msgstr ""
#: ../../c-api/weakref.rst:76
msgid "If the reference is dead, set *\\*pobj* to ``NULL`` and return 0."
msgstr ""
#: ../../c-api/weakref.rst:77
msgid "On error, raise an exception and return -1."
msgstr ""
#: ../../c-api/weakref.rst:84
msgid ""
"Return a :term:`borrowed reference` to the referenced object from a weak "
"reference, *ref*. If the referent is no longer live, returns ``Py_None``."
msgstr ""
#: ../../c-api/weakref.rst:89
msgid ""
"This function returns a :term:`borrowed reference` to the referenced object. "
"This means that you should always call :c:func:`Py_INCREF` on the object "
"except when it cannot be destroyed before the last usage of the borrowed "
"reference."
msgstr ""
#: ../../c-api/weakref.rst:94 ../../c-api/weakref.rst:102
msgid "Use :c:func:`PyWeakref_GetRef` instead."
msgstr ""
#: ../../c-api/weakref.rst:100
msgid "Similar to :c:func:`PyWeakref_GetObject`, but does no error checking."
msgstr ""
#: ../../c-api/weakref.rst:108
msgid ""
"Test if the weak reference *ref* is dead. Returns 1 if the reference is "
"dead, 0 if it is alive, and -1 with an error set if *ref* is not a weak "
"reference object."
msgstr ""
#: ../../c-api/weakref.rst:117
msgid ""
"This function is called by the :c:member:`~PyTypeObject.tp_dealloc` handler "
"to clear weak references."
msgstr ""
#: ../../c-api/weakref.rst:120
msgid ""
"This iterates through the weak references for *object* and calls callbacks "
"for those references which have one. It returns when all callbacks have been "
"attempted."
msgstr ""
#: ../../c-api/weakref.rst:127
msgid "Clears the weakrefs for *object* without calling the callbacks."
msgstr ""
#: ../../c-api/weakref.rst:129
msgid ""
"This function is called by the :c:member:`~PyTypeObject.tp_dealloc` handler "
"for types with finalizers (i.e., :meth:`~object.__del__`). The handler for "
"those objects first calls :c:func:`PyObject_ClearWeakRefs` to clear weakrefs "
"and call their callbacks, then the finalizer, and finally this function to "
"clear any weakrefs that may have been created by the finalizer."
msgstr ""
#: ../../c-api/weakref.rst:135
msgid ""
"In most circumstances, it's more appropriate to use :c:func:"
"`PyObject_ClearWeakRefs` to clear weakrefs instead of this function."
msgstr ""