[New-bugs-announce] [issue27918] Running test suites without gui but still having windows flash

[Xiang Zhang]

New submission from Xiang Zhang:

When I run test suites I find something interesting. Even if I don't enable gui resource there are still windows flashing. The two tests are test_idle and test_tk. I think the root cause is that they both use test.support.import_module with no reason and then root.update(in _is_gui_available) is called and windows flash. Comment out root.update windows are gone. Is this a must or can we find some way to suppress this?

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components: Tests
messages: 274045
nosy: ned.deily, xiang.zhang
priority: normal
severity: normal
status: open
title: Running test suites without gui but still having windows flash
type: behavior
versions: Python 3.6

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