lou1306 added the comment:
I noticed the issue is still there in Python 3.6.
But I can't see why array subclasses should be the reason for this
implementation.
By looking at getarrayitem, it looks like __getitem__ does not play any role in
how the elements are accessed.
Consider the attached example, where SubclassedArray.__getitem__ is overridden
to always return 0: nonetheless, equality checks with an array.array containing
the same elements always succeed.
> For cases where the signedness and element size are identical, it's trivial
> to acquire readonly buffers for both arrays and directly compare the memory
I would argue that _integerness_ sholud also be identical: otherwise
array("l", range(10)) == array("f", range(10))
would evaluate to False, while it is True in the current implementation.
----------
nosy: +Luca Di Stefano
Added file: http://bugs.python.org/file46675/subclass_test.py
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<http://bugs.python.org/issue24700>
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