[issue13503] improved efficiency of bytearray pickling by using bytes type instead of str

[Antoine Pitrou]

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

The irony is that with protocol < 3, bytes should piggy-back on bytearray and not the reverse (since the bytearray constructor has the same semantics under 2.x and 3.x).

It also means that the latin1 encoding solution should probably be kept for protocol < 3. Using __reduce_ex__ should allow for such combination, AFAIK. I think a separate issue should be opened for bytes.

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<http://bugs.python.org/issue13503>
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