flush stdout/stderr on displayhook call #782
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This helps stream output arrive before pyout. closes ipythongh-780
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Great, thanks! I'd been meaning to do this for a while. Merging now. |
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Merged, I rebased to avoid the merge loop for just one commit. Closing here. |
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This makes the displayhook invocation a sync point for streams, helping ensure that text printed prior to return values will arrive prior to the return output.
should fix #780