[issue7092] Test suite emits many DeprecationWarnings when -3 is enabled

[Antoine Pitrou]

Antoine Pitrou <pitrou at free.fr> added the comment:

One thing: "lambda k: k in selfdata" can be replaced with
"selfdata.__contains__". It may have better performance characteristics
too.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue7092>
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