[issue4424] Add support for a cmp, or key argument to heapq functions.

[Raymond Hettinger]

Raymond Hettinger <rhettinger at users.sourceforge.net> added the comment:

This is a duplicate of a previously rejected request.  The usual
approach is to load the heap with (priority, record) tuples.

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nosy: +rhettinger
resolution:  -> duplicate
status: open -> closed

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<http://bugs.python.org/issue4424>
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