[issue22955] Pickling of methodcaller, attrgetter, and itemgetter

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

> Instead, it is the picking and unpickling tools themselves that tend to have crummy error messages when presented with objects that weren't specially designed with pickle support.

See issue22995 about this.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue22955>
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