[issue27918] Running test suites without gui but still having windows flash

[Roundup Robot]

Roundup Robot added the comment:

New changeset de9e410e78d8 by Terry Jan Reedy in branch '2.7':
Issue #27918# test.resource.is_gui_available no longer flashes tk window.
https://hg.python.org/cpython/rev/de9e410e78d8

New changeset 756c27efe193 by Terry Jan Reedy in branch '3.5':
Issue #27918# test.resource.is_gui_available no longer flashes tk window.
https://hg.python.org/cpython/rev/756c27efe193

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nosy: +python-dev

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue27918>
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