[issue24067] Weakproxy is an instance of collections.Iterator

[Gareth Rees]

Gareth Rees added the comment:

Not just Iterator, but Container, Hashable, Iterable, and Sized too!

    >>> import weakref
    >>> class C: pass
    >>> o = C()
    >>> w = weakref.proxy(o)
    >>> from collections.abc import *
    >>> isinstance(w, Container)
    True
    >>> isinstance(w, Hashable)
    True
    >>> isinstance(w, Iterable)
    True
    >>> isinstance(w, Sized)
    True

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nosy: +Gareth.Rees

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<http://bugs.python.org/issue24067>
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