R. David Murray added the comment:

Terry: I would not be in favor of using the normal iter, since iterating a 
collection doesn't normally empty it, and there may be tools that iterate a 
test suite outside of test execution.  Adding a pop_iter method would be a 
backward compatibility issue, since "replacement" test suites would not have 
that method.  I think the current patch is the best bet for maintaining 
backward compatibility.

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nosy: +r.david.murray

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<http://bugs.python.org/issue11798>
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