[issue20367] concurrent.futures.as_completed() fails when given duplicate Futures

[Roundup Robot]

Roundup Robot added the comment:

New changeset 791b69f9f96d by Victor Stinner in branch '3.3':
Issue #20367: Fix behavior of concurrent.futures.as_completed() for duplicate
http://hg.python.org/cpython/rev/791b69f9f96d

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<http://bugs.python.org/issue20367>
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