[issue20804] Sentinels identity lost when pickled (unittest.mock)

[Michael Foord]

Michael Foord added the comment:

I'm not sure to what extent mock documentation should explain Python semantics. The docs *do* make clear that sentinel is useful for where you want to test (compare) objects by *identity*. Problems with copying and pickling them come from the fact that those operations don't preserve *identity*, which is a basic facet of *Python* and not down to mock/sentinel.

"sentinel provides a convenient way of creating and testing the identity of objects like this."

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue20804>
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