[issue33313] pwritev, preadv and posix_spawn are missing from "What's new in 3.7"

[Pablo Galindo Salgado]

Change by Pablo Galindo Salgado <pablogsal at gmail.com>:


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assignee:  -> pablogsal
components: +Documentation
priority: normal -> high
stage:  -> needs patch
type:  -> enhancement
versions: +Python 3.7

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue33313>
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