[docs] [issue29756] Improve documentation for list methods that compare items by equality

[Alexander Todorov]

Alexander Todorov added the comment:

Hi folks,
I have another very similar issue, it could be the same root cause. Let me know if it is. 

assert 3 == 3.0  will pass

self.assertEqual(3, 3.0) - will pass

this had the nasty side effect of my test suite not catching a problem with SUT. I have updated the test suite to validate the result type as well but want to know how to file this use-case.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue29756>
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