[issue22831] Use "with" to avoid possible fd leaks

[Serhiy Storchaka]

Change by Serhiy Storchaka <storchaka+cpython at gmail.com>:


----------
pull_requests:  -10171, 10173, 10174, 10176, 10177, 10180

_______________________________________
Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue22831>
_______________________________________