[issue40275] test.support has way too many imports

[hai shi]

Change by hai shi <shihai1991 at 126.com>:


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keywords: +patch
nosy: +shihai1991
nosy_count: 1.0 -> 2.0
pull_requests: +18929
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/19592

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue40275>
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