[issue19048] itertools.tee doesn't have a __sizeof__ method

[Antoine Pitrou]

Antoine Pitrou added the comment:

> Thy are visible by calling gc.get_referents().

That's totally besides the point. The point is that those
objects are invisible in normal conditions, not that they can't
be read using advanced implementation-dependent tricks.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue19048>
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