when inheriting from tuple, incomplete-protocol false positive

[pylint-bot]

Originally reported by: Sylvain Thénault (BitBucket: sthenault, GitHub: @sthenault?)

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complains about missing delitem, setitem which don't make sense on (immutable) tuple

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• Bitbucket: https://bitbucket.org/logilab/pylint/issue/25

[pylint-bot]

Original comment by Sylvain Thénault (BitBucket: sthenault, GitHub: @sthenault?):

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[design analysis] fix badly implemented protocol for read-only containers like tuple. Close #25

[pylint-bot]

Original comment by Yanir Seroussi (BitBucket: yanir, GitHub: @yanir?):

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We're seeing a similar issue with a container that inherits from set ("Badly implemented Container, implements len but not getitem"). Is may be worth adding checks for containers that inherit from containers that don't support random access.

[pylint-bot]

Original comment by Sylvain Thénault (BitBucket: sthenault, GitHub: @sthenault?):

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Removing version: 1.0 (automated comment)