[issue3051] heapq change breaking compatibility

[Jean-Paul Calderone]

Jean-Paul Calderone <exarkun at divmod.com> added the comment:

I tried this too and then wrote a couple unit tests for this.  The one
for the Python implementation which tests the case where only __le__ is
defined fails, though.

Diff attached.

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keywords: +patch
Added file: http://bugs.python.org/file10582/test_heapq.diff

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