[docs] [issue17147] BytesIO should be mentioned in SpooledTemporaryFile documentation

[Éric Araujo]

Éric Araujo added the comment:

Typos: whenewer → whether and has specified → was specified

Otherwise good to commit.

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nosy: +eric.araujo
type: compile error -> enhancement

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue17147>
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