[issue29368] Optimize unpickling list-like objects: use extend() instead of append()

[Raymond Hettinger]

Raymond Hettinger added the comment:

This code looks correct and reasonable.  The tests all pass for me.  I think you can go forward and apply the patch.

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assignee:  -> serhiy.storchaka
nosy: +rhettinger

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<http://bugs.python.org/issue29368>
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