Tim Peters <t...@python.org> added the comment:
Serhiy, if I understand this, it _could_ pay big with even just a few
operations. For example,
[0] * 1000000 + [1] + [2] + [3]
As-is, we'll copy the million zeroes three times. WIth the patch, more likely
the original vector of a million zeroes would be extended in-place, three times
with a single element each time.
But I don't know that people do that in real code. It would be great to find
real examples in real could that would benefit.
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue36229>
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