[issue27106] configparser.__all__ is incomplete

[Łukasz Langa]

Łukasz Langa added the comment:

I'm still not convinced this change is *useful*. The list of incompatibilities in Python 3.6 in whatsnew is going to be used retrospectively by people already affected by a production issue, googling for an explanation as to what went wrong.

I like the idea of adding a unit test that clarifies the omission is deliberate at this point.

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<http://bugs.python.org/issue27106>
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