[issue38938] Possible performance improvement for heaqq.merge()

[Raymond Hettinger]

Raymond Hettinger <raymond.hettinger at gmail.com> added the comment:

Thanks.  I'll look at this shortly.  We're getting much closer.

Just so that I don't lose other work I've done, am uploading new_merge2.py with in-line iterative tree construction of the initial tree.

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Added file: https://bugs.python.org/file49184/new_merge2.py

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