[docs] [issue18576] Document test.support.script_helper

[Julien Palard]

Julien Palard <julien+python at palard.fr> added the comment:

All those functions has already been documented.

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dependencies:  -Make test.script_helper more comprehensive, and use it in the test suite
nosy: +mdk
resolution:  -> out of date
stage: patch review -> resolved
status: open -> closed

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue18576>
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