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        "author": "Pawe\u0142 Sobkowiak",
        "author_email": "pawel.sobkowiak@gmail.com",
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        "description": "A Descriptor class implementing weakref properties in Python 2/3\n================================================================\n\nAdd a property that acts like a normal attribute,\nbut keeps a weak reference to anything that is assigned\nto it.\n\nExample:\n\n    First let's define WeakValue using WeakProperty\n    and SomeClass that will be weakly referenced::\n\n        >>> import weakref_property\n        >>> import gc\n\n        >>> class WeakValue(object):\n        ...     value = weakref_property.WeakProperty('value')\n\n        >>> class SomeClass(object):\n        ...     pass\n\n    You can assign and retrieve a value::\n\n        >>> a = SomeClass()\n        >>> obj = WeakValue()\n        >>> obj.value = a\n        >>> obj.value  # doctest: +ELLIPSIS\n        <__main__.SomeClass object at ...>\n\n    But it is kept as a weakref, so it can get collected.\n    If it is collected, the property returns None::\n\n        >>> del a\n        >>> gc.collect()  # force gc to collect `a` object\n        0\n        >>> obj.value\n\n    You can also delete the value completelly::\n\n        >>> del obj.value\n        >>> obj.value\n        Traceback (most recent call last):\n            ...\n        AttributeError: 'WeakValue' object has no attribute 'value'\n\n    Sadly, weakrefs do not work on tuples, ints\n    and not-subclassed lists and dicts::\n\n        >>> obj.value = []\n        Traceback (most recent call last):\n            ...\n        TypeError: cannot create weak reference to 'list' object\n",
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