[issue12606] Mutable Sequence Type works different for lists and bytearrays in slice[i:j:k]

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

Note that adding this new feature to list adds a pressure to add this feature to other mutable sequences (deque, ElementTree.Element, etc). This is a burden for maintainers.

array already supports this feature as well as bytearray. It may be a difference between arrays of unboxed values and general collections of Python objects.

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nosy: +serhiy.storchaka

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<http://bugs.python.org/issue12606>
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